/usr/bin/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/array-examples/standard_password_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:27:04,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:27:04,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:27:04,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:27:04,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:27:04,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:27:04,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:27:04,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:27:04,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:27:04,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:27:04,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:27:04,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:27:04,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:27:04,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:27:04,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:27:04,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:27:04,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:27:04,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:27:04,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:27:04,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:27:04,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:27:04,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:27:04,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:27:04,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:27:04,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:27:04,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:27:04,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:27:04,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:27:04,494 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 [2019-11-06 22:27:04,526 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:27:04,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:27:04,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:27:04,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:27:04,532 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:27:04,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:27:04,532 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:27:04,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:27:04,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:27:04,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:27:04,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:27:04,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:27:04,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:27:04,533 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:27:04,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:27:04,534 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:27:04,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:27:04,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:27:04,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:27:04,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:27:04,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:27:04,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:27:04,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:27:04,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:27:04,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:27:04,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:27:04,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:27:04,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:27:04,537 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 [2019-11-06 22:27:04,836 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:27:04,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:27:04,852 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:27:04,854 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:27:04,855 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:27:04,855 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_password_ground.i [2019-11-06 22:27:04,930 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7fd1244d/e8de805c83d1445d93638786ea2218f2/FLAG2cb587ab5 [2019-11-06 22:27:05,356 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:27:05,357 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_password_ground.i [2019-11-06 22:27:05,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7fd1244d/e8de805c83d1445d93638786ea2218f2/FLAG2cb587ab5 [2019-11-06 22:27:05,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7fd1244d/e8de805c83d1445d93638786ea2218f2 [2019-11-06 22:27:05,798 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:27:05,800 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:27:05,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:05,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:27:05,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:27:05,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:05" (1/1) ... [2019-11-06 22:27:05,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c549147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:05, skipping insertion in model container [2019-11-06 22:27:05,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:05" (1/1) ... [2019-11-06 22:27:05,819 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:27:05,835 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:27:06,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:06,065 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:27:06,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:06,118 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:27:06,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:06 WrapperNode [2019-11-06 22:27:06,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:06,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:27:06,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:27:06,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:27:06,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:06" (1/1) ... [2019-11-06 22:27:06,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:06" (1/1) ... [2019-11-06 22:27:06,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:06" (1/1) ... [2019-11-06 22:27:06,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:06" (1/1) ... [2019-11-06 22:27:06,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:06" (1/1) ... [2019-11-06 22:27:06,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:06" (1/1) ... [2019-11-06 22:27:06,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:06" (1/1) ... [2019-11-06 22:27:06,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:27:06,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:27:06,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:27:06,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:27:06,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:06" (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 [2019-11-06 22:27:06,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:27:06,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:27:06,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:27:06,336 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:27:06,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:27:06,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:27:06,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:27:06,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:27:06,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:27:06,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:27:06,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:27:06,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:27:06,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:27:06,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:27:06,655 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:27:06,655 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-06 22:27:06,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:06 BoogieIcfgContainer [2019-11-06 22:27:06,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:27:06,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:27:06,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:27:06,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:27:06,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:27:05" (1/3) ... [2019-11-06 22:27:06,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df83550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:06, skipping insertion in model container [2019-11-06 22:27:06,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:06" (2/3) ... [2019-11-06 22:27:06,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df83550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:06, skipping insertion in model container [2019-11-06 22:27:06,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:06" (3/3) ... [2019-11-06 22:27:06,683 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_password_ground.i [2019-11-06 22:27:06,694 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:27:06,712 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:27:06,725 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:27:06,752 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:27:06,753 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:27:06,753 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:27:06,753 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:27:06,753 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:27:06,753 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:27:06,753 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:27:06,754 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:27:06,769 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-06 22:27:06,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 22:27:06,775 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:06,776 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:06,778 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:06,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:06,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1554617121, now seen corresponding path program 1 times [2019-11-06 22:27:06,797 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:06,797 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416144101] [2019-11-06 22:27:06,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:06,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:27:06,923 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416144101] [2019-11-06 22:27:06,923 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:06,924 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:27:06,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450171868] [2019-11-06 22:27:06,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:27:06,931 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:06,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:27:06,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:27:06,948 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-06 22:27:06,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:06,973 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2019-11-06 22:27:06,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:27:06,975 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-11-06 22:27:06,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:06,982 INFO L225 Difference]: With dead ends: 48 [2019-11-06 22:27:06,983 INFO L226 Difference]: Without dead ends: 23 [2019-11-06 22:27:06,985 INFO L630 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 [2019-11-06 22:27:07,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-06 22:27:07,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-06 22:27:07,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-06 22:27:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-11-06 22:27:07,021 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 15 [2019-11-06 22:27:07,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:07,022 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-11-06 22:27:07,022 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:27:07,022 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-11-06 22:27:07,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 22:27:07,023 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:07,023 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:07,023 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:07,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:07,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1658163888, now seen corresponding path program 1 times [2019-11-06 22:27:07,024 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:07,025 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398845023] [2019-11-06 22:27:07,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:07,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:27:07,080 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398845023] [2019-11-06 22:27:07,081 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:07,081 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:27:07,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621452442] [2019-11-06 22:27:07,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:27:07,084 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:07,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:27:07,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:27:07,084 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 3 states. [2019-11-06 22:27:07,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:07,142 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2019-11-06 22:27:07,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:27:07,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-06 22:27:07,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:07,144 INFO L225 Difference]: With dead ends: 43 [2019-11-06 22:27:07,144 INFO L226 Difference]: Without dead ends: 28 [2019-11-06 22:27:07,145 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:27:07,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-06 22:27:07,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2019-11-06 22:27:07,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-06 22:27:07,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-11-06 22:27:07,152 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 15 [2019-11-06 22:27:07,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:07,153 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-11-06 22:27:07,153 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:27:07,153 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-11-06 22:27:07,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-06 22:27:07,154 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:07,154 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:07,155 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:07,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:07,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1238952957, now seen corresponding path program 1 times [2019-11-06 22:27:07,155 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:07,156 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500533487] [2019-11-06 22:27:07,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:07,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:27:07,246 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500533487] [2019-11-06 22:27:07,246 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329434416] [2019-11-06 22:27:07,247 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 [2019-11-06 22:27:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:07,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:27:07,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:27:07,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:27:07,386 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:27:07,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:27:07,433 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [369136705] [2019-11-06 22:27:07,441 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 21 [2019-11-06 22:27:07,503 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:27:07,504 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:27:07,557 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:27:07,559 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 27 variables. [2019-11-06 22:27:07,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:07,562 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:27:07,593 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-06 22:27:07,594 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:27:07,595 INFO L553 sIntCurrentIteration]: We unified 19 AI predicates to 19 [2019-11-06 22:27:07,595 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:27:07,596 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:27:07,596 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-11-06 22:27:07,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045472128] [2019-11-06 22:27:07,597 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:27:07,598 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:07,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:27:07,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:27:07,598 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 2 states. [2019-11-06 22:27:07,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:07,601 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-11-06 22:27:07,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:27:07,601 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2019-11-06 22:27:07,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:07,601 INFO L225 Difference]: With dead ends: 25 [2019-11-06 22:27:07,602 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 22:27:07,602 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:27:07,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 22:27:07,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 22:27:07,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 22:27:07,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 22:27:07,604 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-11-06 22:27:07,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:07,604 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 22:27:07,604 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:27:07,604 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 22:27:07,604 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 22:27:07,807 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:27:07,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 22:27:07,838 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:27:07,838 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:27:07,839 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:27:07,839 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:27:07,839 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 22:27:07,839 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:27:07,839 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:27:07,840 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 5 29) no Hoare annotation was computed. [2019-11-06 22:27:07,840 INFO L443 ceAbstractionStarter]: For program point L11-2(lines 11 15) no Hoare annotation was computed. [2019-11-06 22:27:07,840 INFO L439 ceAbstractionStarter]: At program point L11-3(lines 11 15) the Hoare annotation is: false [2019-11-06 22:27:07,840 INFO L443 ceAbstractionStarter]: For program point L11-4(lines 11 15) no Hoare annotation was computed. [2019-11-06 22:27:07,840 INFO L443 ceAbstractionStarter]: For program point L24-2(lines 24 26) no Hoare annotation was computed. [2019-11-06 22:27:07,840 INFO L439 ceAbstractionStarter]: At program point L24-3(lines 24 26) the Hoare annotation is: false [2019-11-06 22:27:07,841 INFO L439 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: false [2019-11-06 22:27:07,841 INFO L443 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2019-11-06 22:27:07,841 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 17 21) no Hoare annotation was computed. [2019-11-06 22:27:07,841 INFO L439 ceAbstractionStarter]: At program point L17-3(lines 17 21) the Hoare annotation is: false [2019-11-06 22:27:07,841 INFO L443 ceAbstractionStarter]: For program point L17-4(lines 5 29) no Hoare annotation was computed. [2019-11-06 22:27:07,841 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 5 29) no Hoare annotation was computed. [2019-11-06 22:27:07,842 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 5 29) the Hoare annotation is: true [2019-11-06 22:27:07,842 INFO L443 ceAbstractionStarter]: For program point L22(lines 22 27) no Hoare annotation was computed. [2019-11-06 22:27:07,842 INFO L443 ceAbstractionStarter]: For program point L18(lines 18 20) no Hoare annotation was computed. [2019-11-06 22:27:07,842 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-11-06 22:27:07,842 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-06 22:27:07,843 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-11-06 22:27:07,843 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-11-06 22:27:07,843 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-11-06 22:27:07,843 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-11-06 22:27:07,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:27:07 BoogieIcfgContainer [2019-11-06 22:27:07,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 22:27:07,854 INFO L168 Benchmark]: Toolchain (without parser) took 2053.27 ms. Allocated memory was 146.3 MB in the beginning and 206.0 MB in the end (delta: 59.8 MB). Free memory was 104.1 MB in the beginning and 110.0 MB in the end (delta: -5.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:07,855 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-06 22:27:07,856 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.84 ms. Allocated memory is still 146.3 MB. Free memory was 103.6 MB in the beginning and 93.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:07,857 INFO L168 Benchmark]: Boogie Preprocessor took 156.94 ms. Allocated memory was 146.3 MB in the beginning and 206.0 MB in the end (delta: 59.8 MB). Free memory was 93.3 MB in the beginning and 183.7 MB in the end (delta: -90.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:07,858 INFO L168 Benchmark]: RCFGBuilder took 381.03 ms. Allocated memory is still 206.0 MB. Free memory was 183.7 MB in the beginning and 168.5 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:07,859 INFO L168 Benchmark]: TraceAbstraction took 1186.15 ms. Allocated memory is still 206.0 MB. Free memory was 167.9 MB in the beginning and 110.0 MB in the end (delta: 57.9 MB). Peak memory consumption was 57.9 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:07,863 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 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 317.84 ms. Allocated memory is still 146.3 MB. Free memory was 103.6 MB in the beginning and 93.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.94 ms. Allocated memory was 146.3 MB in the beginning and 206.0 MB in the end (delta: 59.8 MB). Free memory was 93.3 MB in the beginning and 183.7 MB in the end (delta: -90.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.03 ms. Allocated memory is still 206.0 MB. Free memory was 183.7 MB in the beginning and 168.5 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1186.15 ms. Allocated memory is still 206.0 MB. Free memory was 167.9 MB in the beginning and 110.0 MB in the end (delta: 57.9 MB). Peak memory consumption was 57.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 59 SDtfs, 4 SDslu, 18 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 1845 SizeOfPredicates, 1 NumberOfNonLiveVariables, 83 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 3/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 121, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9210526315789473, AVG_VARS_REMOVED_DURING_WEAKENING: 0.9473684210526315, AVG_WEAKENED_CONJUNCTS: 0.3157894736842105, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...