/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_init9_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:26:54,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:26:54,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:26:54,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 22:26:54,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:26:54,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:26:54,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:26:54,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:26:54,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:26:54,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:26:54,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:26:54,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:26:54,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:26:55,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:26:55,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:26:55,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:26:55,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:26:55,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:26:55,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:26:55,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:26:55,018 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 22:26:55,049 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:26:55,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:26:55,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:26:55,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:26:55,053 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:26:55,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:26:55,054 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:26:55,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:26:55,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:26:55,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:26:55,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:26:55,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:26:55,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:26:55,055 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:26:55,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:26:55,055 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:26:55,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:26:55,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:26:55,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:26:55,056 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:26:55,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:26:55,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:26:55,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:26:55,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:26:55,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:26:55,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:26:55,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:26:55,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:26:55,058 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 22:26:55,327 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:26:55,341 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:26:55,344 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:26:55,345 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:26:55,346 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:26:55,346 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init9_ground-1.i [2019-11-06 22:26:55,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52271b0cb/644ffbc736ab42d68409aa35609ba10b/FLAGce3662b0e [2019-11-06 22:26:55,843 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:26:55,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init9_ground-1.i [2019-11-06 22:26:55,851 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52271b0cb/644ffbc736ab42d68409aa35609ba10b/FLAGce3662b0e [2019-11-06 22:26:56,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52271b0cb/644ffbc736ab42d68409aa35609ba10b [2019-11-06 22:26:56,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:26:56,234 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:26:56,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:56,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:26:56,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:26:56,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:56" (1/1) ... [2019-11-06 22:26:56,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576dd075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:56, skipping insertion in model container [2019-11-06 22:26:56,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:56" (1/1) ... [2019-11-06 22:26:56,251 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:26:56,269 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:26:56,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:56,470 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:26:56,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:56,617 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:26:56,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:56 WrapperNode [2019-11-06 22:26:56,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:56,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:26:56,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:26:56,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:26:56,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:56" (1/1) ... [2019-11-06 22:26:56,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:56" (1/1) ... [2019-11-06 22:26:56,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:56" (1/1) ... [2019-11-06 22:26:56,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:56" (1/1) ... [2019-11-06 22:26:56,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:56" (1/1) ... [2019-11-06 22:26:56,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:56" (1/1) ... [2019-11-06 22:26:56,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:56" (1/1) ... [2019-11-06 22:26:56,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:26:56,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:26:56,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:26:56,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:26:56,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:56" (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 22:26:56,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:26:56,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:26:56,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:26:56,756 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:26:56,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:26:56,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:26:56,756 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:26:56,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:26:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:26:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:26:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:26:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:26:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:26:57,085 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:26:57,085 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-06 22:26:57,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:57 BoogieIcfgContainer [2019-11-06 22:26:57,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:26:57,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:26:57,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:26:57,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:26:57,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:26:56" (1/3) ... [2019-11-06 22:26:57,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e8e614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:57, skipping insertion in model container [2019-11-06 22:26:57,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:56" (2/3) ... [2019-11-06 22:26:57,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e8e614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:57, skipping insertion in model container [2019-11-06 22:26:57,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:57" (3/3) ... [2019-11-06 22:26:57,096 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_init9_ground-1.i [2019-11-06 22:26:57,104 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:26:57,111 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:26:57,122 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:26:57,145 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:26:57,145 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:26:57,145 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:26:57,145 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:26:57,145 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:26:57,146 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:26:57,146 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:26:57,146 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:26:57,161 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2019-11-06 22:26:57,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-06 22:26:57,166 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:57,167 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:57,169 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:57,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:57,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1872712154, now seen corresponding path program 1 times [2019-11-06 22:26:57,181 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:57,181 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989689963] [2019-11-06 22:26:57,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:57,321 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 22:26:57,322 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989689963] [2019-11-06 22:26:57,323 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:57,324 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:26:57,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762458063] [2019-11-06 22:26:57,330 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:57,331 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:57,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:26:57,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:26:57,349 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2019-11-06 22:26:57,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:57,378 INFO L93 Difference]: Finished difference Result 71 states and 110 transitions. [2019-11-06 22:26:57,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:57,380 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2019-11-06 22:26:57,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:57,389 INFO L225 Difference]: With dead ends: 71 [2019-11-06 22:26:57,389 INFO L226 Difference]: Without dead ends: 34 [2019-11-06 22:26:57,393 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 22:26:57,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-06 22:26:57,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-06 22:26:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-06 22:26:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2019-11-06 22:26:57,434 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 29 [2019-11-06 22:26:57,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:57,435 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2019-11-06 22:26:57,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:57,435 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2019-11-06 22:26:57,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-06 22:26:57,437 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:57,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:57,437 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:57,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:57,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1932733742, now seen corresponding path program 1 times [2019-11-06 22:26:57,438 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:57,439 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189874028] [2019-11-06 22:26:57,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:57,497 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 22:26:57,497 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189874028] [2019-11-06 22:26:57,498 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:57,503 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:26:57,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861178964] [2019-11-06 22:26:57,506 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:26:57,506 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:57,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:26:57,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:57,507 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand 3 states. [2019-11-06 22:26:57,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:57,654 INFO L93 Difference]: Finished difference Result 70 states and 96 transitions. [2019-11-06 22:26:57,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:26:57,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2019-11-06 22:26:57,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:57,657 INFO L225 Difference]: With dead ends: 70 [2019-11-06 22:26:57,657 INFO L226 Difference]: Without dead ends: 43 [2019-11-06 22:26:57,658 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 22:26:57,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-06 22:26:57,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-11-06 22:26:57,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-06 22:26:57,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2019-11-06 22:26:57,672 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2019-11-06 22:26:57,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:57,673 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2019-11-06 22:26:57,673 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:26:57,673 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2019-11-06 22:26:57,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-06 22:26:57,674 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:57,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:57,674 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:57,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:57,675 INFO L82 PathProgramCache]: Analyzing trace with hash 97911482, now seen corresponding path program 1 times [2019-11-06 22:26:57,675 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:57,675 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375343859] [2019-11-06 22:26:57,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:57,763 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-06 22:26:57,763 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375343859] [2019-11-06 22:26:57,764 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254741001] [2019-11-06 22:26:57,764 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 22:26:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:57,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:26:57,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:26:57,897 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-06 22:26:57,898 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:26:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-06 22:26:57,948 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1062575937] [2019-11-06 22:26:57,957 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 39 [2019-11-06 22:26:58,033 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:26:58,034 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:26:58,115 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:26:58,117 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 17 variables. [2019-11-06 22:26:58,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:58,121 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:26:58,161 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-06 22:26:58,161 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:26:58,164 INFO L553 sIntCurrentIteration]: We unified 37 AI predicates to 37 [2019-11-06 22:26:58,164 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:26:58,165 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:26:58,165 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-11-06 22:26:58,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22004705] [2019-11-06 22:26:58,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:58,166 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:58,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:26:58,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:26:58,167 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 2 states. [2019-11-06 22:26:58,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:58,171 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2019-11-06 22:26:58,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:58,171 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 38 [2019-11-06 22:26:58,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:58,172 INFO L225 Difference]: With dead ends: 43 [2019-11-06 22:26:58,172 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 22:26:58,173 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 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 22:26:58,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 22:26:58,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 22:26:58,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 22:26:58,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 22:26:58,174 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2019-11-06 22:26:58,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:58,175 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 22:26:58,175 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:58,175 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 22:26:58,175 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 22:26:58,385 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:26:58,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 22:26:58,444 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:26:58,444 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:26:58,444 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:26:58,444 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:26:58,445 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 22:26:58,445 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:26:58,445 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:26:58,445 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 3 55) no Hoare annotation was computed. [2019-11-06 22:26:58,445 INFO L439 ceAbstractionStarter]: At program point L52(line 52) the Hoare annotation is: false [2019-11-06 22:26:58,445 INFO L443 ceAbstractionStarter]: For program point L52-1(line 52) no Hoare annotation was computed. [2019-11-06 22:26:58,446 INFO L439 ceAbstractionStarter]: At program point L11-2(lines 11 14) the Hoare annotation is: false [2019-11-06 22:26:58,446 INFO L443 ceAbstractionStarter]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2019-11-06 22:26:58,446 INFO L439 ceAbstractionStarter]: At program point L36-2(lines 36 39) the Hoare annotation is: false [2019-11-06 22:26:58,446 INFO L443 ceAbstractionStarter]: For program point L36-3(lines 36 39) no Hoare annotation was computed. [2019-11-06 22:26:58,446 INFO L439 ceAbstractionStarter]: At program point L21-2(lines 21 24) the Hoare annotation is: false [2019-11-06 22:26:58,446 INFO L443 ceAbstractionStarter]: For program point L21-3(lines 21 24) no Hoare annotation was computed. [2019-11-06 22:26:58,446 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 3 55) no Hoare annotation was computed. [2019-11-06 22:26:58,447 INFO L439 ceAbstractionStarter]: At program point L46-2(lines 46 49) the Hoare annotation is: false [2019-11-06 22:26:58,447 INFO L443 ceAbstractionStarter]: For program point L46-3(lines 46 49) no Hoare annotation was computed. [2019-11-06 22:26:58,447 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 3 55) the Hoare annotation is: true [2019-11-06 22:26:58,447 INFO L439 ceAbstractionStarter]: At program point L6-2(lines 6 9) the Hoare annotation is: false [2019-11-06 22:26:58,447 INFO L443 ceAbstractionStarter]: For program point L6-3(lines 6 9) no Hoare annotation was computed. [2019-11-06 22:26:58,447 INFO L439 ceAbstractionStarter]: At program point L31-2(lines 31 34) the Hoare annotation is: false [2019-11-06 22:26:58,447 INFO L443 ceAbstractionStarter]: For program point L31-3(lines 31 34) no Hoare annotation was computed. [2019-11-06 22:26:58,448 INFO L439 ceAbstractionStarter]: At program point L16-2(lines 16 19) the Hoare annotation is: false [2019-11-06 22:26:58,448 INFO L443 ceAbstractionStarter]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2019-11-06 22:26:58,448 INFO L439 ceAbstractionStarter]: At program point L41-2(lines 41 44) the Hoare annotation is: false [2019-11-06 22:26:58,448 INFO L443 ceAbstractionStarter]: For program point L41-3(lines 41 44) no Hoare annotation was computed. [2019-11-06 22:26:58,448 INFO L439 ceAbstractionStarter]: At program point L26-2(lines 26 29) the Hoare annotation is: false [2019-11-06 22:26:58,448 INFO L443 ceAbstractionStarter]: For program point L26-3(lines 26 29) no Hoare annotation was computed. [2019-11-06 22:26:58,448 INFO L443 ceAbstractionStarter]: For program point L51-2(lines 51 53) no Hoare annotation was computed. [2019-11-06 22:26:58,449 INFO L439 ceAbstractionStarter]: At program point L51-3(lines 51 53) the Hoare annotation is: false [2019-11-06 22:26:58,449 INFO L443 ceAbstractionStarter]: For program point L51-4(lines 51 53) no Hoare annotation was computed. [2019-11-06 22:26:58,449 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-11-06 22:26:58,449 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-11-06 22:26:58,449 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-11-06 22:26:58,449 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-11-06 22:26:58,450 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-06 22:26:58,450 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-11-06 22:26:58,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:26:58 BoogieIcfgContainer [2019-11-06 22:26:58,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 22:26:58,474 INFO L168 Benchmark]: Toolchain (without parser) took 2237.59 ms. Allocated memory was 138.4 MB in the beginning and 235.9 MB in the end (delta: 97.5 MB). Free memory was 103.5 MB in the beginning and 202.7 MB in the end (delta: -99.3 MB). Peak memory consumption was 88.2 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:58,476 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-06 22:26:58,479 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.31 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 103.1 MB in the beginning and 182.6 MB in the end (delta: -79.5 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:58,480 INFO L168 Benchmark]: Boogie Preprocessor took 69.44 ms. Allocated memory is still 203.4 MB. Free memory was 182.6 MB in the beginning and 180.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:58,482 INFO L168 Benchmark]: RCFGBuilder took 399.98 ms. Allocated memory is still 203.4 MB. Free memory was 180.2 MB in the beginning and 163.0 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:58,488 INFO L168 Benchmark]: TraceAbstraction took 1380.28 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 162.3 MB in the beginning and 202.7 MB in the end (delta: -40.5 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:58,497 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 383.31 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 103.1 MB in the beginning and 182.6 MB in the end (delta: -79.5 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.44 ms. Allocated memory is still 203.4 MB. Free memory was 182.6 MB in the beginning and 180.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 399.98 ms. Allocated memory is still 203.4 MB. Free memory was 180.2 MB in the beginning and 163.0 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1380.28 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 162.3 MB in the beginning and 202.7 MB in the end (delta: -40.5 MB). Peak memory consumption was 82.0 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: 46]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 1 error locations. Result: SAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 16 SDs, 0 SdLazy, 27 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s 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 DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 18 PreInvPairs, 18 NumberOfFragments, 16 HoareAnnotationTreeSize, 18 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 16 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 167 ConstructedInterpolants, 0 QuantifiedInterpolants, 6175 SizeOfPredicates, 1 NumberOfNonLiveVariables, 112 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 24/27 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 165, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9797297297297297, AVG_VARS_REMOVED_DURING_WEAKENING: 0.4594594594594595, AVG_WEAKENED_CONJUNCTS: 0.16216216216216217, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...