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/loops/string-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:06:10,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:06:10,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:06:10,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:06:10,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:06:10,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:06:10,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:06:10,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:06:10,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:06:10,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:06:10,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:06:10,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:06:10,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:06:10,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:06:10,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:06:10,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:06:10,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:06:10,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:06:10,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:06:10,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:06:10,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:06:10,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:06:10,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:06:10,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:06:10,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:06:10,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:06:10,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:06:10,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:06:10,713 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 01:06:10,727 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:06:10,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:06:10,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:06:10,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:06:10,731 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:06:10,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:06:10,731 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:06:10,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:06:10,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:06:10,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:06:10,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:06:10,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:06:10,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:06:10,733 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:06:10,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:06:10,733 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:06:10,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:06:10,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:06:10,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:06:10,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:06:10,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:06:10,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:06:10,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:06:10,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:06:10,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:06:10,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:06:10,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:06:10,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:06:10,737 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 01:06:11,010 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:06:11,026 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:06:11,030 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:06:11,031 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:06:11,031 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:06:11,032 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/string-1.i [2019-10-15 01:06:11,108 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281920b70/ff9ede500e674d72adcafc4150956339/FLAG3ab78da52 [2019-10-15 01:06:11,542 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:06:11,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/string-1.i [2019-10-15 01:06:11,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281920b70/ff9ede500e674d72adcafc4150956339/FLAG3ab78da52 [2019-10-15 01:06:12,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281920b70/ff9ede500e674d72adcafc4150956339 [2019-10-15 01:06:12,074 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:06:12,076 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:06:12,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:06:12,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:06:12,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:06:12,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:06:12" (1/1) ... [2019-10-15 01:06:12,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb0478c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:12, skipping insertion in model container [2019-10-15 01:06:12,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:06:12" (1/1) ... [2019-10-15 01:06:12,093 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:06:12,117 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:06:12,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:06:12,302 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:06:12,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:06:12,438 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:06:12,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:12 WrapperNode [2019-10-15 01:06:12,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:06:12,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:06:12,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:06:12,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:06:12,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:12" (1/1) ... [2019-10-15 01:06:12,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:12" (1/1) ... [2019-10-15 01:06:12,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:12" (1/1) ... [2019-10-15 01:06:12,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:12" (1/1) ... [2019-10-15 01:06:12,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:12" (1/1) ... [2019-10-15 01:06:12,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:12" (1/1) ... [2019-10-15 01:06:12,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:12" (1/1) ... [2019-10-15 01:06:12,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:06:12,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:06:12,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:06:12,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:06:12,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:12" (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 01:06:12,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:06:12,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:06:12,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 01:06:12,554 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:06:12,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:06:12,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 01:06:12,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:06:12,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-15 01:06:12,555 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:06:12,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:06:12,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:06:12,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:06:12,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:06:12,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:06:12,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:06:12,891 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:06:12,891 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 01:06:12,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:06:12 BoogieIcfgContainer [2019-10-15 01:06:12,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:06:12,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:06:12,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:06:12,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:06:12,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:06:12" (1/3) ... [2019-10-15 01:06:12,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c32143e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:06:12, skipping insertion in model container [2019-10-15 01:06:12,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:12" (2/3) ... [2019-10-15 01:06:12,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c32143e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:06:12, skipping insertion in model container [2019-10-15 01:06:12,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:06:12" (3/3) ... [2019-10-15 01:06:12,901 INFO L109 eAbstractionObserver]: Analyzing ICFG string-1.i [2019-10-15 01:06:12,911 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:06:12,925 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:06:12,936 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:06:12,965 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:06:12,965 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:06:12,965 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:06:12,965 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:06:12,965 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:06:12,965 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:06:12,965 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:06:12,966 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:06:12,984 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-10-15 01:06:12,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-15 01:06:12,991 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:12,992 INFO L380 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] [2019-10-15 01:06:12,994 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:12,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:13,000 INFO L82 PathProgramCache]: Analyzing trace with hash -99599224, now seen corresponding path program 1 times [2019-10-15 01:06:13,008 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:13,009 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121154141] [2019-10-15 01:06:13,009 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:13,009 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:13,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:13,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:13,138 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121154141] [2019-10-15 01:06:13,139 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:06:13,140 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:06:13,140 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078473486] [2019-10-15 01:06:13,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:06:13,146 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:13,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:06:13,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:06:13,164 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2019-10-15 01:06:13,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:13,192 INFO L93 Difference]: Finished difference Result 62 states and 89 transitions. [2019-10-15 01:06:13,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:06:13,193 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2019-10-15 01:06:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:13,203 INFO L225 Difference]: With dead ends: 62 [2019-10-15 01:06:13,203 INFO L226 Difference]: Without dead ends: 28 [2019-10-15 01:06:13,207 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 01:06:13,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-15 01:06:13,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-15 01:06:13,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-15 01:06:13,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-10-15 01:06:13,254 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 22 [2019-10-15 01:06:13,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:13,254 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-10-15 01:06:13,255 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:06:13,255 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-10-15 01:06:13,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-15 01:06:13,256 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:13,257 INFO L380 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] [2019-10-15 01:06:13,257 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:13,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:13,258 INFO L82 PathProgramCache]: Analyzing trace with hash 930552028, now seen corresponding path program 1 times [2019-10-15 01:06:13,258 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:13,259 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714910093] [2019-10-15 01:06:13,259 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:13,259 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:13,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:13,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:13,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714910093] [2019-10-15 01:06:13,358 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:06:13,358 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:06:13,358 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084723613] [2019-10-15 01:06:13,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:06:13,363 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:13,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:06:13,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:06:13,364 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 3 states. [2019-10-15 01:06:13,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:13,466 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2019-10-15 01:06:13,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:06:13,467 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-15 01:06:13,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:13,472 INFO L225 Difference]: With dead ends: 56 [2019-10-15 01:06:13,472 INFO L226 Difference]: Without dead ends: 36 [2019-10-15 01:06:13,474 INFO L600 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 [2019-10-15 01:06:13,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-15 01:06:13,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2019-10-15 01:06:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-15 01:06:13,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-10-15 01:06:13,496 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 24 [2019-10-15 01:06:13,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:13,496 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-10-15 01:06:13,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:06:13,497 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-10-15 01:06:13,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-15 01:06:13,498 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:13,499 INFO L380 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] [2019-10-15 01:06:13,499 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:13,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:13,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1358146588, now seen corresponding path program 1 times [2019-10-15 01:06:13,502 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:13,502 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367879806] [2019-10-15 01:06:13,503 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:13,503 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:13,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:13,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:06:13,648 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367879806] [2019-10-15 01:06:13,648 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885034034] [2019-10-15 01:06:13,649 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 01:06:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:13,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:06:13,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:06:13,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:06:13,772 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:06:13,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:06:13,811 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1012479501] [2019-10-15 01:06:13,818 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 29 [2019-10-15 01:06:13,857 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:06:13,857 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:06:13,919 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-15 01:06:13,921 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 29 variables. [2019-10-15 01:06:13,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:13,923 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-15 01:06:13,959 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-15 01:06:13,959 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-15 01:06:13,962 INFO L553 sIntCurrentIteration]: We unified 27 AI predicates to 27 [2019-10-15 01:06:13,962 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-15 01:06:13,963 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:06:13,963 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-10-15 01:06:13,963 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236179171] [2019-10-15 01:06:13,964 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:06:13,965 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:13,965 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-15 01:06:13,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:06:13,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:06:13,966 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 2 states. [2019-10-15 01:06:13,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:13,968 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-10-15 01:06:13,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:06:13,969 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 28 [2019-10-15 01:06:13,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:13,969 INFO L225 Difference]: With dead ends: 30 [2019-10-15 01:06:13,969 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:06:13,970 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 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 01:06:13,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:06:13,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:06:13,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:06:13,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:06:13,971 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2019-10-15 01:06:13,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:13,972 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:06:13,972 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:06:13,972 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:06:13,972 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:06:14,176 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:14,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:06:14,216 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:06:14,216 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:06:14,217 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:06:14,217 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:06:14,217 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 01:06:14,217 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:06:14,217 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:06:14,217 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 14 58) no Hoare annotation was computed. [2019-10-15 01:06:14,217 INFO L443 ceAbstractionStarter]: For program point L23-2(lines 23 24) no Hoare annotation was computed. [2019-10-15 01:06:14,218 INFO L439 ceAbstractionStarter]: At program point L23-3(lines 23 24) the Hoare annotation is: false [2019-10-15 01:06:14,218 INFO L443 ceAbstractionStarter]: For program point L23-4(lines 23 24) no Hoare annotation was computed. [2019-10-15 01:06:14,218 INFO L443 ceAbstractionStarter]: For program point L19-2(lines 19 20) no Hoare annotation was computed. [2019-10-15 01:06:14,218 INFO L439 ceAbstractionStarter]: At program point L19-3(lines 19 20) the Hoare annotation is: false [2019-10-15 01:06:14,218 INFO L443 ceAbstractionStarter]: For program point L19-4(lines 19 20) no Hoare annotation was computed. [2019-10-15 01:06:14,219 INFO L443 ceAbstractionStarter]: For program point L32-1(lines 32 33) no Hoare annotation was computed. [2019-10-15 01:06:14,219 INFO L439 ceAbstractionStarter]: At program point L32-3(lines 32 33) the Hoare annotation is: false [2019-10-15 01:06:14,219 INFO L443 ceAbstractionStarter]: For program point L32-4(lines 15 58) no Hoare annotation was computed. [2019-10-15 01:06:14,219 INFO L443 ceAbstractionStarter]: For program point L28-1(lines 28 29) no Hoare annotation was computed. [2019-10-15 01:06:14,219 INFO L439 ceAbstractionStarter]: At program point L28-3(lines 28 29) the Hoare annotation is: false [2019-10-15 01:06:14,219 INFO L443 ceAbstractionStarter]: For program point L28-4(lines 28 29) no Hoare annotation was computed. [2019-10-15 01:06:14,220 INFO L443 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2019-10-15 01:06:14,220 INFO L439 ceAbstractionStarter]: At program point L41-2(lines 39 51) the Hoare annotation is: false [2019-10-15 01:06:14,220 INFO L443 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2019-10-15 01:06:14,220 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-10-15 01:06:14,220 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 14 58) no Hoare annotation was computed. [2019-10-15 01:06:14,221 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 14 58) the Hoare annotation is: true [2019-10-15 01:06:14,221 INFO L439 ceAbstractionStarter]: At program point L55(line 55) the Hoare annotation is: false [2019-10-15 01:06:14,221 INFO L443 ceAbstractionStarter]: For program point L55-1(line 55) no Hoare annotation was computed. [2019-10-15 01:06:14,221 INFO L443 ceAbstractionStarter]: For program point L39-2(lines 39 51) no Hoare annotation was computed. [2019-10-15 01:06:14,221 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2019-10-15 01:06:14,222 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2019-10-15 01:06:14,222 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-10-15 01:06:14,222 INFO L443 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-10-15 01:06:14,222 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-10-15 01:06:14,223 INFO L443 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2019-10-15 01:06:14,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:06:14 BoogieIcfgContainer [2019-10-15 01:06:14,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:06:14,235 INFO L168 Benchmark]: Toolchain (without parser) took 2157.98 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 103.8 MB in the beginning and 96.6 MB in the end (delta: 7.2 MB). Peak memory consumption was 64.9 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:14,236 INFO L168 Benchmark]: CDTParser took 0.22 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 01:06:14,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.94 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 103.6 MB in the beginning and 183.1 MB in the end (delta: -79.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:14,238 INFO L168 Benchmark]: Boogie Preprocessor took 48.47 ms. Allocated memory is still 203.9 MB. Free memory was 183.1 MB in the beginning and 180.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:14,238 INFO L168 Benchmark]: RCFGBuilder took 405.05 ms. Allocated memory is still 203.9 MB. Free memory was 180.8 MB in the beginning and 162.4 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:14,239 INFO L168 Benchmark]: TraceAbstraction took 1337.80 ms. Allocated memory is still 203.9 MB. Free memory was 161.7 MB in the beginning and 96.6 MB in the end (delta: 65.1 MB). Peak memory consumption was 65.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:14,243 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 361.94 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 103.6 MB in the beginning and 183.1 MB in the end (delta: -79.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.47 ms. Allocated memory is still 203.9 MB. Free memory was 183.1 MB in the beginning and 180.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 405.05 ms. Allocated memory is still 203.9 MB. Free memory was 180.8 MB in the beginning and 162.4 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1337.80 ms. Allocated memory is still 203.9 MB. Free memory was 161.7 MB in the beginning and 96.6 MB in the end (delta: 65.1 MB). Peak memory consumption was 65.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 39]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 1 error locations. Result: SAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 5 SDslu, 20 SDs, 0 SdLazy, 18 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 13 PreInvPairs, 13 NumberOfFragments, 11 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 3689 SizeOfPredicates, 1 NumberOfNonLiveVariables, 98 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 3/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 106, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9166666666666666, AVG_VARS_REMOVED_DURING_WEAKENING: 0.9259259259259259, AVG_WEAKENED_CONJUNCTS: 0.2222222222222222, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...