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/sum01_bug02.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:06:13,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:06:13,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:06:13,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:06:13,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:06:13,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:06:13,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:06:13,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:06:13,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:06:13,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:06:13,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:06:13,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:06:13,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:06:13,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:06:13,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:06:13,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:06:13,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:06:13,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:06:13,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:06:13,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:06:13,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:06:13,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:06:13,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:06:13,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:06:13,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:06:13,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:06:13,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:06:13,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:06:13,801 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 01:06:13,815 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:06:13,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:06:13,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:06:13,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:06:13,817 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:06:13,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:06:13,817 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:06:13,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:06:13,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:06:13,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:06:13,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:06:13,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:06:13,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:06:13,818 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:06:13,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:06:13,819 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:06:13,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:06:13,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:06:13,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:06:13,820 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:06:13,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:06:13,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:06:13,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:06:13,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:06:13,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:06:13,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:06:13,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:06:13,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:06:13,822 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 01:06:14,151 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:06:14,174 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:06:14,178 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:06:14,179 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:06:14,180 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:06:14,181 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01_bug02.i [2019-10-15 01:06:14,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d1c7371b/b58decabbd2049cea8961e06bdfc2a80/FLAG9a2bacabd [2019-10-15 01:06:14,736 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:06:14,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01_bug02.i [2019-10-15 01:06:14,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d1c7371b/b58decabbd2049cea8961e06bdfc2a80/FLAG9a2bacabd [2019-10-15 01:06:15,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d1c7371b/b58decabbd2049cea8961e06bdfc2a80 [2019-10-15 01:06:15,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:06:15,174 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:06:15,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:06:15,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:06:15,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:06:15,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:06:15" (1/1) ... [2019-10-15 01:06:15,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31f60985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:15, skipping insertion in model container [2019-10-15 01:06:15,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:06:15" (1/1) ... [2019-10-15 01:06:15,190 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:06:15,205 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:06:15,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:06:15,378 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:06:15,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:06:15,406 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:06:15,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:15 WrapperNode [2019-10-15 01:06:15,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:06:15,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:06:15,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:06:15,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:06:15,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:15" (1/1) ... [2019-10-15 01:06:15,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:15" (1/1) ... [2019-10-15 01:06:15,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:15" (1/1) ... [2019-10-15 01:06:15,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:15" (1/1) ... [2019-10-15 01:06:15,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:15" (1/1) ... [2019-10-15 01:06:15,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:15" (1/1) ... [2019-10-15 01:06:15,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:15" (1/1) ... [2019-10-15 01:06:15,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:06:15,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:06:15,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:06:15,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:06:15,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:15" (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 01:06:15,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:06:15,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:06:15,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 01:06:15,572 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:06:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:06:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:06:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-15 01:06:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:06:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:06:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:06:15,771 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:06:15,771 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:06:15,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:06:15 BoogieIcfgContainer [2019-10-15 01:06:15,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:06:15,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:06:15,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:06:15,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:06:15,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:06:15" (1/3) ... [2019-10-15 01:06:15,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174c3bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:06:15, skipping insertion in model container [2019-10-15 01:06:15,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:15" (2/3) ... [2019-10-15 01:06:15,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174c3bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:06:15, skipping insertion in model container [2019-10-15 01:06:15,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:06:15" (3/3) ... [2019-10-15 01:06:15,791 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01_bug02.i [2019-10-15 01:06:15,821 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:06:15,832 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:06:15,848 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:06:15,878 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:06:15,879 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:06:15,879 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:06:15,879 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:06:15,879 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:06:15,879 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:06:15,879 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:06:15,880 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:06:15,902 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-15 01:06:15,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:06:15,909 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:15,910 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:15,912 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:15,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:15,919 INFO L82 PathProgramCache]: Analyzing trace with hash -146959038, now seen corresponding path program 1 times [2019-10-15 01:06:15,929 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:15,930 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801869065] [2019-10-15 01:06:15,930 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:15,930 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:15,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:16,051 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 01:06:16,052 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801869065] [2019-10-15 01:06:16,053 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:06:16,053 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:06:16,053 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638357555] [2019-10-15 01:06:16,057 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:06:16,059 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:16,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:06:16,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:06:16,072 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-10-15 01:06:16,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:16,095 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-10-15 01:06:16,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:06:16,097 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-15 01:06:16,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:16,106 INFO L225 Difference]: With dead ends: 31 [2019-10-15 01:06:16,106 INFO L226 Difference]: Without dead ends: 14 [2019-10-15 01:06:16,110 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 01:06:16,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-15 01:06:16,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-15 01:06:16,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-15 01:06:16,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-10-15 01:06:16,147 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2019-10-15 01:06:16,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:16,148 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-10-15 01:06:16,148 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:06:16,149 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-10-15 01:06:16,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:06:16,149 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:16,150 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:16,150 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:16,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:16,151 INFO L82 PathProgramCache]: Analyzing trace with hash -158964811, now seen corresponding path program 1 times [2019-10-15 01:06:16,151 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:16,151 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579349547] [2019-10-15 01:06:16,151 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:16,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:16,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:16,261 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 01:06:16,262 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579349547] [2019-10-15 01:06:16,262 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:06:16,262 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:06:16,262 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064353597] [2019-10-15 01:06:16,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:06:16,265 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:16,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:06:16,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:06:16,266 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2019-10-15 01:06:16,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:16,327 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-10-15 01:06:16,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:06:16,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-15 01:06:16,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:16,329 INFO L225 Difference]: With dead ends: 23 [2019-10-15 01:06:16,329 INFO L226 Difference]: Without dead ends: 18 [2019-10-15 01:06:16,330 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:06:16,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-15 01:06:16,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-15 01:06:16,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-15 01:06:16,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-10-15 01:06:16,336 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2019-10-15 01:06:16,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:16,336 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-10-15 01:06:16,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:06:16,336 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-10-15 01:06:16,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-15 01:06:16,337 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:16,337 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:16,338 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:16,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:16,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1017948080, now seen corresponding path program 1 times [2019-10-15 01:06:16,339 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:16,339 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773883577] [2019-10-15 01:06:16,339 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:16,339 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:16,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:16,583 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 01:06:16,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773883577] [2019-10-15 01:06:16,584 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135456979] [2019-10-15 01:06:16,584 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 01:06:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:16,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-15 01:06:16,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:06:16,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:16,838 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 01:06:16,841 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:06:17,024 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 01:06:17,025 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1737977865] [2019-10-15 01:06:17,031 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 15 [2019-10-15 01:06:17,067 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:06:17,068 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:06:17,134 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-15 01:06:17,254 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-15 01:06:17,257 INFO L272 AbstractInterpreter]: Visited 14 different actions 68 times. Merged at 5 different actions 30 times. Widened at 1 different actions 4 times. Performed 117 root evaluator evaluations with a maximum evaluation depth of 6. Performed 117 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 7 variables. [2019-10-15 01:06:17,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:17,262 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:06:17,263 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:06:17,263 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2019-10-15 01:06:17,263 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835895275] [2019-10-15 01:06:17,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-15 01:06:17,264 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:17,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-15 01:06:17,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:06:17,266 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 21 states. [2019-10-15 01:06:17,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:17,518 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2019-10-15 01:06:17,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 01:06:17,518 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 14 [2019-10-15 01:06:17,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:17,521 INFO L225 Difference]: With dead ends: 42 [2019-10-15 01:06:17,521 INFO L226 Difference]: Without dead ends: 36 [2019-10-15 01:06:17,523 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:06:17,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-15 01:06:17,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2019-10-15 01:06:17,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-15 01:06:17,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-10-15 01:06:17,530 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 14 [2019-10-15 01:06:17,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:17,531 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-10-15 01:06:17,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-15 01:06:17,531 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-10-15 01:06:17,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-15 01:06:17,532 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:17,532 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:17,743 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:17,744 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:17,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:17,744 INFO L82 PathProgramCache]: Analyzing trace with hash -852639511, now seen corresponding path program 1 times [2019-10-15 01:06:17,745 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:17,745 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612626523] [2019-10-15 01:06:17,745 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:17,746 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:17,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:17,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:06:17,775 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612626523] [2019-10-15 01:06:17,775 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:06:17,775 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:06:17,775 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735192381] [2019-10-15 01:06:17,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:06:17,779 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:17,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:06:17,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:06:17,780 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 3 states. [2019-10-15 01:06:17,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:17,802 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2019-10-15 01:06:17,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:06:17,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-15 01:06:17,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:17,806 INFO L225 Difference]: With dead ends: 36 [2019-10-15 01:06:17,806 INFO L226 Difference]: Without dead ends: 23 [2019-10-15 01:06:17,807 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 01:06:17,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-15 01:06:17,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-15 01:06:17,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-15 01:06:17,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-10-15 01:06:17,812 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 18 [2019-10-15 01:06:17,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:17,815 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-10-15 01:06:17,815 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:06:17,815 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-10-15 01:06:17,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-15 01:06:17,816 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:17,816 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:17,817 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:17,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:17,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1920151575, now seen corresponding path program 2 times [2019-10-15 01:06:17,817 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:17,818 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080059459] [2019-10-15 01:06:17,818 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:17,818 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:17,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:17,892 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:17,893 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080059459] [2019-10-15 01:06:17,893 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605818979] [2019-10-15 01:06:17,895 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) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:17,928 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-15 01:06:17,928 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:06:17,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 01:06:17,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:06:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:17,970 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:06:18,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:18,016 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1487837816] [2019-10-15 01:06:18,016 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-10-15 01:06:18,017 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-10-15 01:06:18,017 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:06:18,018 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2019-10-15 01:06:18,018 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602841524] [2019-10-15 01:06:18,018 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:06:18,019 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:18,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:06:18,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:06:18,019 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 11 states. [2019-10-15 01:06:18,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:18,071 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-10-15 01:06:18,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:06:18,072 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2019-10-15 01:06:18,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:18,073 INFO L225 Difference]: With dead ends: 36 [2019-10-15 01:06:18,074 INFO L226 Difference]: Without dead ends: 27 [2019-10-15 01:06:18,075 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:06:18,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-15 01:06:18,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2019-10-15 01:06:18,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-15 01:06:18,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2019-10-15 01:06:18,087 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 18 [2019-10-15 01:06:18,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:18,088 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2019-10-15 01:06:18,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:06:18,088 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2019-10-15 01:06:18,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-15 01:06:18,089 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:18,089 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:18,294 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:18,294 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:18,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:18,295 INFO L82 PathProgramCache]: Analyzing trace with hash -971600090, now seen corresponding path program 2 times [2019-10-15 01:06:18,295 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:18,295 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169756370] [2019-10-15 01:06:18,295 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:18,295 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:18,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:18,549 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:06:18,550 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169756370] [2019-10-15 01:06:18,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331753195] [2019-10-15 01:06:18,551 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:18,591 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-15 01:06:18,592 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:06:18,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-15 01:06:18,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:06:18,786 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:18,818 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:18,818 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:06:19,124 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:19,125 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1618681995] [2019-10-15 01:06:19,125 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-10-15 01:06:19,125 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-10-15 01:06:19,126 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:06:19,126 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 30 [2019-10-15 01:06:19,126 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067974472] [2019-10-15 01:06:19,127 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-10-15 01:06:19,127 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:19,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-10-15 01:06:19,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2019-10-15 01:06:19,128 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 30 states. [2019-10-15 01:06:19,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:19,704 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2019-10-15 01:06:19,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-15 01:06:19,704 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 22 [2019-10-15 01:06:19,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:19,705 INFO L225 Difference]: With dead ends: 44 [2019-10-15 01:06:19,705 INFO L226 Difference]: Without dead ends: 38 [2019-10-15 01:06:19,706 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=288, Invalid=1604, Unknown=0, NotChecked=0, Total=1892 [2019-10-15 01:06:19,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-15 01:06:19,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2019-10-15 01:06:19,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-15 01:06:19,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-10-15 01:06:19,712 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 22 [2019-10-15 01:06:19,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:19,712 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2019-10-15 01:06:19,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-10-15 01:06:19,712 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2019-10-15 01:06:19,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-15 01:06:19,713 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:19,713 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:19,914 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:19,914 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:19,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:19,915 INFO L82 PathProgramCache]: Analyzing trace with hash -131462049, now seen corresponding path program 3 times [2019-10-15 01:06:19,915 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:19,916 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656607619] [2019-10-15 01:06:19,916 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:19,916 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:19,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:19,989 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:19,989 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656607619] [2019-10-15 01:06:19,989 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90892229] [2019-10-15 01:06:19,989 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:20,029 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-15 01:06:20,030 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:06:20,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-15 01:06:20,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:06:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:20,106 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:06:20,174 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:20,175 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1766252265] [2019-10-15 01:06:20,175 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-10-15 01:06:20,175 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-10-15 01:06:20,175 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:06:20,176 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2019-10-15 01:06:20,176 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59355106] [2019-10-15 01:06:20,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-15 01:06:20,177 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:20,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-15 01:06:20,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=174, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:06:20,178 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 18 states. [2019-10-15 01:06:20,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:20,260 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2019-10-15 01:06:20,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:06:20,265 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 26 [2019-10-15 01:06:20,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:20,266 INFO L225 Difference]: With dead ends: 46 [2019-10-15 01:06:20,266 INFO L226 Difference]: Without dead ends: 37 [2019-10-15 01:06:20,267 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=174, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:06:20,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-15 01:06:20,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2019-10-15 01:06:20,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-15 01:06:20,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-10-15 01:06:20,272 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 26 [2019-10-15 01:06:20,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:20,273 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2019-10-15 01:06:20,273 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-15 01:06:20,273 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2019-10-15 01:06:20,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-15 01:06:20,274 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:20,274 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:20,479 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:20,480 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:20,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:20,481 INFO L82 PathProgramCache]: Analyzing trace with hash -682200363, now seen corresponding path program 4 times [2019-10-15 01:06:20,481 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:20,481 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979085890] [2019-10-15 01:06:20,482 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:20,482 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:20,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-15 01:06:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-15 01:06:20,562 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-15 01:06:20,562 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-15 01:06:20,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:06:20 BoogieIcfgContainer [2019-10-15 01:06:20,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:06:20,617 INFO L168 Benchmark]: Toolchain (without parser) took 5438.19 ms. Allocated memory was 138.4 MB in the beginning and 246.4 MB in the end (delta: 108.0 MB). Free memory was 103.4 MB in the beginning and 149.8 MB in the end (delta: -46.4 MB). Peak memory consumption was 61.6 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:20,618 INFO L168 Benchmark]: CDTParser took 1.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 01:06:20,619 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.93 ms. Allocated memory is still 138.4 MB. Free memory was 103.2 MB in the beginning and 93.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:20,620 INFO L168 Benchmark]: Boogie Preprocessor took 112.55 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 93.8 MB in the beginning and 180.8 MB in the end (delta: -87.0 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:20,621 INFO L168 Benchmark]: RCFGBuilder took 256.43 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 169.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:20,624 INFO L168 Benchmark]: TraceAbstraction took 4832.71 ms. Allocated memory was 202.4 MB in the beginning and 246.4 MB in the end (delta: 44.0 MB). Free memory was 168.8 MB in the beginning and 149.8 MB in the end (delta: 19.0 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:20,635 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 231.93 ms. Allocated memory is still 138.4 MB. Free memory was 103.2 MB in the beginning and 93.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.55 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 93.8 MB in the beginning and 180.8 MB in the end (delta: -87.0 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 256.43 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 169.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4832.71 ms. Allocated memory was 202.4 MB in the beginning and 246.4 MB in the end (delta: 44.0 MB). Free memory was 168.8 MB in the beginning and 149.8 MB in the end (delta: 19.0 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 VAL [i=1, j=10, n=6, n=0] [L13] COND TRUE i<=n VAL [i=1, j=10, n=6, n=0] [L14] COND TRUE i