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/loop-acceleration/simple_4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:04:37,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:04:37,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:04:37,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:04:37,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:04:37,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:04:37,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:04:37,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:04:37,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:04:37,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:04:37,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:04:37,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:04:37,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:04:37,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:04:37,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:04:37,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:04:37,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:04:37,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:04:37,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:04:37,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:04:37,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:04:37,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:04:37,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:04:37,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:04:37,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:04:37,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:04:37,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:04:37,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:04:37,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:04:37,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:04:37,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:04:37,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:04:37,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:04:37,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:04:37,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:04:37,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:04:37,112 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 01:04:37,132 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:04:37,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:04:37,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:04:37,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:04:37,134 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:04:37,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:04:37,134 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:04:37,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:04:37,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:04:37,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:04:37,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:04:37,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:04:37,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:04:37,136 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:04:37,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:04:37,136 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:04:37,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:04:37,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:04:37,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:04:37,137 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:04:37,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:04:37,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:04:37,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:04:37,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:04:37,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:04:37,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:04:37,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:04:37,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:04:37,139 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 01:04:37,435 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:04:37,449 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:04:37,452 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:04:37,454 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:04:37,454 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:04:37,455 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_4-2.c [2019-10-15 01:04:37,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bce2a8a9/12745f466884400080431ca72dfb7510/FLAG8c4fcaefa [2019-10-15 01:04:37,996 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:04:37,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_4-2.c [2019-10-15 01:04:38,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bce2a8a9/12745f466884400080431ca72dfb7510/FLAG8c4fcaefa [2019-10-15 01:04:38,422 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bce2a8a9/12745f466884400080431ca72dfb7510 [2019-10-15 01:04:38,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:04:38,433 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:04:38,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:04:38,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:04:38,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:04:38,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:04:38" (1/1) ... [2019-10-15 01:04:38,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b66671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:38, skipping insertion in model container [2019-10-15 01:04:38,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:04:38" (1/1) ... [2019-10-15 01:04:38,450 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:04:38,467 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:04:38,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:04:38,645 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:04:38,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:04:38,671 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:04:38,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:38 WrapperNode [2019-10-15 01:04:38,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:04:38,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:04:38,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:04:38,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:04:38,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:38" (1/1) ... [2019-10-15 01:04:38,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:38" (1/1) ... [2019-10-15 01:04:38,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:38" (1/1) ... [2019-10-15 01:04:38,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:38" (1/1) ... [2019-10-15 01:04:38,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:38" (1/1) ... [2019-10-15 01:04:38,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:38" (1/1) ... [2019-10-15 01:04:38,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:38" (1/1) ... [2019-10-15 01:04:38,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:04:38,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:04:38,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:04:38,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:04:38,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:38" (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 01:04:38,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:04:38,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:04:38,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 01:04:38,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:04:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:04:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:04:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:04:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:04:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:04:38,999 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:04:39,000 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:04:39,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:04:39 BoogieIcfgContainer [2019-10-15 01:04:39,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:04:39,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:04:39,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:04:39,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:04:39,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:04:38" (1/3) ... [2019-10-15 01:04:39,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0cabfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:04:39, skipping insertion in model container [2019-10-15 01:04:39,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:38" (2/3) ... [2019-10-15 01:04:39,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0cabfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:04:39, skipping insertion in model container [2019-10-15 01:04:39,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:04:39" (3/3) ... [2019-10-15 01:04:39,015 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_4-2.c [2019-10-15 01:04:39,024 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:04:39,031 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:04:39,042 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:04:39,067 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:04:39,068 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:04:39,068 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:04:39,068 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:04:39,068 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:04:39,068 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:04:39,069 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:04:39,069 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:04:39,087 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-10-15 01:04:39,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:04:39,093 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:04:39,094 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:04:39,096 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:04:39,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:04:39,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2019-10-15 01:04:39,112 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:04:39,112 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994775004] [2019-10-15 01:04:39,112 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:39,113 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:39,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:04:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:04:39,365 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 01:04:39,366 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994775004] [2019-10-15 01:04:39,368 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:04:39,368 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:04:39,368 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140079265] [2019-10-15 01:04:39,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:04:39,386 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:04:39,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:04:39,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:04:39,426 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2019-10-15 01:04:39,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:04:39,486 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2019-10-15 01:04:39,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:04:39,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-10-15 01:04:39,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:04:39,502 INFO L225 Difference]: With dead ends: 29 [2019-10-15 01:04:39,502 INFO L226 Difference]: Without dead ends: 12 [2019-10-15 01:04:39,510 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:04:39,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-15 01:04:39,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-15 01:04:39,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-15 01:04:39,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-15 01:04:39,564 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-10-15 01:04:39,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:04:39,565 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-15 01:04:39,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:04:39,568 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-15 01:04:39,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 01:04:39,570 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:04:39,570 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:04:39,571 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:04:39,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:04:39,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2019-10-15 01:04:39,572 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:04:39,573 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80962516] [2019-10-15 01:04:39,573 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:39,573 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:39,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:04:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:04:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:04:39,741 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80962516] [2019-10-15 01:04:39,742 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245292023] [2019-10-15 01:04:39,742 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 01:04:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:04:39,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 01:04:39,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:04:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:04:39,857 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:04:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:04:39,902 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1080964871] [2019-10-15 01:04:39,909 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 12 [2019-10-15 01:04:39,938 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:04:39,938 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:04:39,994 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-15 01:04:40,401 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-15 01:04:40,405 INFO L272 AbstractInterpreter]: Visited 11 different actions 35 times. Merged at 2 different actions 8 times. Widened at 1 different actions 2 times. Performed 48 root evaluator evaluations with a maximum evaluation depth of 13. Performed 48 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2019-10-15 01:04:40,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:04:40,411 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:04:40,412 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:04:40,412 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2019-10-15 01:04:40,412 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607935263] [2019-10-15 01:04:40,414 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:04:40,415 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:04:40,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:04:40,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:04:40,416 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 7 states. [2019-10-15 01:04:40,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:04:40,473 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2019-10-15 01:04:40,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:04:40,474 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-10-15 01:04:40,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:04:40,475 INFO L225 Difference]: With dead ends: 20 [2019-10-15 01:04:40,475 INFO L226 Difference]: Without dead ends: 15 [2019-10-15 01:04:40,476 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:04:40,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-15 01:04:40,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-15 01:04:40,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-15 01:04:40,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-10-15 01:04:40,481 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2019-10-15 01:04:40,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:04:40,482 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-10-15 01:04:40,482 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:04:40,482 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-10-15 01:04:40,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-15 01:04:40,483 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:04:40,483 INFO L380 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:04:40,688 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:04:40,689 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:04:40,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:04:40,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1031021570, now seen corresponding path program 2 times [2019-10-15 01:04:40,690 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:04:40,690 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153142559] [2019-10-15 01:04:40,690 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:40,690 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:40,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:04:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:04:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:04:40,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153142559] [2019-10-15 01:04:40,871 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098106605] [2019-10-15 01:04:40,872 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-10-15 01:04:40,907 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:04:40,907 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:04:40,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:04:40,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:04:40,932 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:04:40,933 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:04:40,937 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:04:40,943 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:04:40,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:04:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:04:40,988 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:04:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:04:41,096 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:04:41,097 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 13 [2019-10-15 01:04:41,097 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009144763] [2019-10-15 01:04:41,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:04:41,099 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:04:41,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:04:41,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:04:41,101 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2019-10-15 01:04:41,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:04:41,150 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-10-15 01:04:41,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:04:41,151 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-10-15 01:04:41,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:04:41,152 INFO L225 Difference]: With dead ends: 15 [2019-10-15 01:04:41,152 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:04:41,153 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:04:41,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:04:41,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:04:41,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:04:41,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:04:41,155 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-10-15 01:04:41,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:04:41,158 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:04:41,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:04:41,159 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:04:41,159 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:04:41,364 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:04:41,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:04:41,414 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-15 01:04:41,414 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:04:41,414 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:04:41,415 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 01:04:41,415 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:04:41,415 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:04:41,415 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 18) the Hoare annotation is: true [2019-10-15 01:04:41,415 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 18) no Hoare annotation was computed. [2019-10-15 01:04:41,415 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 18) no Hoare annotation was computed. [2019-10-15 01:04:41,415 INFO L439 ceAbstractionStarter]: At program point L13-2(lines 13 15) the Hoare annotation is: (= 0 (mod main_~x~0 2)) [2019-10-15 01:04:41,416 INFO L439 ceAbstractionStarter]: At program point L13-3(lines 13 15) the Hoare annotation is: (<= (mod main_~x~0 4294967296) 0) [2019-10-15 01:04:41,416 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-15 01:04:41,416 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-15 01:04:41,416 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-15 01:04:41,416 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-15 01:04:41,416 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-15 01:04:41,416 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-15 01:04:41,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:04:41 BoogieIcfgContainer [2019-10-15 01:04:41,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:04:41,433 INFO L168 Benchmark]: Toolchain (without parser) took 2999.03 ms. Allocated memory was 144.7 MB in the beginning and 234.4 MB in the end (delta: 89.7 MB). Free memory was 100.8 MB in the beginning and 104.1 MB in the end (delta: -3.3 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:41,434 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 01:04:41,435 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.51 ms. Allocated memory is still 144.7 MB. Free memory was 100.6 MB in the beginning and 91.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:41,436 INFO L168 Benchmark]: Boogie Preprocessor took 116.78 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 91.4 MB in the beginning and 180.6 MB in the end (delta: -89.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:41,437 INFO L168 Benchmark]: RCFGBuilder took 213.78 ms. Allocated memory is still 202.4 MB. Free memory was 180.6 MB in the beginning and 170.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:41,438 INFO L168 Benchmark]: TraceAbstraction took 2425.57 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 169.9 MB in the beginning and 104.1 MB in the end (delta: 65.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:41,449 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 237.51 ms. Allocated memory is still 144.7 MB. Free memory was 100.6 MB in the beginning and 91.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.78 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 91.4 MB in the beginning and 180.6 MB in the end (delta: -89.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 213.78 ms. Allocated memory is still 202.4 MB. Free memory was 180.6 MB in the beginning and 170.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2425.57 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 169.9 MB in the beginning and 104.1 MB in the end (delta: 65.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 13]: Loop Invariant Derived loop invariant: 0 == x % 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Result: SAFE, OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 2 SDslu, 60 SDs, 0 SdLazy, 25 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 14 NumberOfFragments, 15 HoareAnnotationTreeSize, 9 FomulaSimplifications, 59 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 60 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 1970 SizeOfPredicates, 4 NumberOfNonLiveVariables, 47 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 20/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...