java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-crafted/zero_sum2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:52:47,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:52:47,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:52:47,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:52:47,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:52:47,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:52:47,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:52:47,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:52:47,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:52:47,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:52:47,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:52:47,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:52:47,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:52:47,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:52:47,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:52:47,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:52:47,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:52:47,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:52:47,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:52:47,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:52:47,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:52:47,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:52:47,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:52:47,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:52:47,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:52:47,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:52:47,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:52:47,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:52:47,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:52:47,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:52:47,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:52:47,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:52:47,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:52:47,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:52:47,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:52:47,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:52:47,790 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 [2019-10-13 19:52:47,818 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:52:47,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:52:47,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:52:47,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:52:47,820 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:52:47,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:52:47,820 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:52:47,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:52:47,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:52:47,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:52:47,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:52:47,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:52:47,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:52:47,822 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:52:47,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:52:47,822 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:52:47,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:52:47,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:52:47,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:52:47,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:52:47,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:52:47,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:52:47,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:52:47,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:52:47,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:52:47,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:52:47,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:52:47,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:52:47,825 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 [2019-10-13 19:52:48,117 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:52:48,138 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:52:48,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:52:48,143 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:52:48,144 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:52:48,144 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum2.c [2019-10-13 19:52:48,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7d6926ba/4b1a87e4b5d04e2eb1c0b7e82b9a7fc1/FLAGa35942aef [2019-10-13 19:52:48,665 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:52:48,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum2.c [2019-10-13 19:52:48,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7d6926ba/4b1a87e4b5d04e2eb1c0b7e82b9a7fc1/FLAGa35942aef [2019-10-13 19:52:49,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7d6926ba/4b1a87e4b5d04e2eb1c0b7e82b9a7fc1 [2019-10-13 19:52:49,046 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:52:49,048 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:52:49,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:52:49,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:52:49,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:52:49,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:52:49" (1/1) ... [2019-10-13 19:52:49,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c0ba10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49, skipping insertion in model container [2019-10-13 19:52:49,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:52:49" (1/1) ... [2019-10-13 19:52:49,069 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:52:49,093 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:52:49,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:52:49,329 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:52:49,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:52:49,384 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:52:49,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49 WrapperNode [2019-10-13 19:52:49,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:52:49,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:52:49,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:52:49,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:52:49,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49" (1/1) ... [2019-10-13 19:52:49,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49" (1/1) ... [2019-10-13 19:52:49,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49" (1/1) ... [2019-10-13 19:52:49,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49" (1/1) ... [2019-10-13 19:52:49,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49" (1/1) ... [2019-10-13 19:52:49,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49" (1/1) ... [2019-10-13 19:52:49,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49" (1/1) ... [2019-10-13 19:52:49,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:52:49,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:52:49,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:52:49,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:52:49,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49" (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 [2019-10-13 19:52:49,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:52:49,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:52:49,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:52:49,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:52:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:52:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:52:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:52:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2019-10-13 19:52:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:52:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:52:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:52:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:52:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:52:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:52:49,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:52:49,879 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:52:49,879 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:52:49,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:49 BoogieIcfgContainer [2019-10-13 19:52:49,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:52:49,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:52:49,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:52:49,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:52:49,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:52:49" (1/3) ... [2019-10-13 19:52:49,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3624b173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:52:49, skipping insertion in model container [2019-10-13 19:52:49,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:49" (2/3) ... [2019-10-13 19:52:49,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3624b173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:52:49, skipping insertion in model container [2019-10-13 19:52:49,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:49" (3/3) ... [2019-10-13 19:52:49,898 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum2.c [2019-10-13 19:52:49,914 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:52:49,923 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:52:49,942 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:52:49,973 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:52:49,973 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:52:49,973 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:52:49,973 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:52:49,973 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:52:49,974 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:52:49,974 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:52:49,974 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:52:49,994 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-10-13 19:52:50,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 19:52:50,000 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:52:50,001 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:52:50,003 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:52:50,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:52:50,008 INFO L82 PathProgramCache]: Analyzing trace with hash -286857817, now seen corresponding path program 1 times [2019-10-13 19:52:50,015 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:52:50,015 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369825846] [2019-10-13 19:52:50,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:52:50,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:52:50,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:52:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:52:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:52:50,141 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369825846] [2019-10-13 19:52:50,142 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:52:50,143 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 19:52:50,143 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449418591] [2019-10-13 19:52:50,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:52:50,149 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:52:50,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:52:50,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:52:50,165 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-10-13 19:52:50,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:52:50,189 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2019-10-13 19:52:50,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:52:50,191 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2019-10-13 19:52:50,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:52:50,199 INFO L225 Difference]: With dead ends: 59 [2019-10-13 19:52:50,199 INFO L226 Difference]: Without dead ends: 26 [2019-10-13 19:52:50,202 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 [2019-10-13 19:52:50,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-13 19:52:50,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-10-13 19:52:50,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-13 19:52:50,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-10-13 19:52:50,237 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 20 [2019-10-13 19:52:50,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:52:50,238 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-10-13 19:52:50,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:52:50,238 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-10-13 19:52:50,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 19:52:50,240 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:52:50,240 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:52:50,240 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:52:50,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:52:50,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1625158677, now seen corresponding path program 1 times [2019-10-13 19:52:50,241 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:52:50,242 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738902743] [2019-10-13 19:52:50,242 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:52:50,242 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:52:50,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:52:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:52:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:52:50,370 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738902743] [2019-10-13 19:52:50,371 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:52:50,372 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:52:50,372 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27498202] [2019-10-13 19:52:50,375 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:52:50,376 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:52:50,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:52:50,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:52:50,377 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2019-10-13 19:52:50,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:52:50,447 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2019-10-13 19:52:50,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:52:50,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-13 19:52:50,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:52:50,449 INFO L225 Difference]: With dead ends: 38 [2019-10-13 19:52:50,449 INFO L226 Difference]: Without dead ends: 33 [2019-10-13 19:52:50,450 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 [2019-10-13 19:52:50,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-13 19:52:50,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-10-13 19:52:50,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-13 19:52:50,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2019-10-13 19:52:50,459 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 20 [2019-10-13 19:52:50,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:52:50,459 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2019-10-13 19:52:50,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:52:50,460 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2019-10-13 19:52:50,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-13 19:52:50,461 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:52:50,461 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:52:50,461 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:52:50,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:52:50,462 INFO L82 PathProgramCache]: Analyzing trace with hash -573455021, now seen corresponding path program 1 times [2019-10-13 19:52:50,462 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:52:50,462 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63676946] [2019-10-13 19:52:50,463 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:52:50,463 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:52:50,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:52:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:52:50,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:52:50,516 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63676946] [2019-10-13 19:52:50,517 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:52:50,517 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:52:50,518 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322294712] [2019-10-13 19:52:50,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:52:50,519 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:52:50,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:52:50,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:52:50,520 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 3 states. [2019-10-13 19:52:50,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:52:50,571 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2019-10-13 19:52:50,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:52:50,572 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-10-13 19:52:50,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:52:50,573 INFO L225 Difference]: With dead ends: 59 [2019-10-13 19:52:50,574 INFO L226 Difference]: Without dead ends: 35 [2019-10-13 19:52:50,574 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 [2019-10-13 19:52:50,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-13 19:52:50,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-10-13 19:52:50,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-13 19:52:50,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2019-10-13 19:52:50,584 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 22 [2019-10-13 19:52:50,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:52:50,586 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2019-10-13 19:52:50,586 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:52:50,586 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2019-10-13 19:52:50,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 19:52:50,588 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:52:50,588 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:52:50,588 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:52:50,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:52:50,589 INFO L82 PathProgramCache]: Analyzing trace with hash 2038931473, now seen corresponding path program 1 times [2019-10-13 19:52:50,591 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:52:50,591 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186326269] [2019-10-13 19:52:50,591 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:52:50,591 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:52:50,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:52:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:52:50,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:52:50,695 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186326269] [2019-10-13 19:52:50,695 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:52:50,695 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:52:50,695 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053227129] [2019-10-13 19:52:50,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:52:50,696 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:52:50,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:52:50,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:52:50,697 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 4 states. [2019-10-13 19:52:50,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:52:50,776 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2019-10-13 19:52:50,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:52:50,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-10-13 19:52:50,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:52:50,778 INFO L225 Difference]: With dead ends: 54 [2019-10-13 19:52:50,778 INFO L226 Difference]: Without dead ends: 35 [2019-10-13 19:52:50,779 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:52:50,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-13 19:52:50,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-10-13 19:52:50,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-13 19:52:50,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-10-13 19:52:50,786 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 24 [2019-10-13 19:52:50,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:52:50,787 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-10-13 19:52:50,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:52:50,787 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-10-13 19:52:50,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-13 19:52:50,788 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:52:50,788 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:52:50,789 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:52:50,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:52:50,789 INFO L82 PathProgramCache]: Analyzing trace with hash -2121276981, now seen corresponding path program 1 times [2019-10-13 19:52:50,790 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:52:50,790 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165930171] [2019-10-13 19:52:50,790 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:52:50,790 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:52:50,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:52:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:52:50,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 19:52:50,858 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165930171] [2019-10-13 19:52:50,859 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228618419] [2019-10-13 19:52:50,859 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 [2019-10-13 19:52:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:52:50,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 19:52:50,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:52:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 19:52:51,000 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:52:51,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 19:52:51,034 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [569396043] [2019-10-13 19:52:51,041 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 31 [2019-10-13 19:52:51,136 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:52:51,137 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:52:51,228 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:52:51,229 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 30 variables. [2019-10-13 19:52:51,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:52:51,233 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:52:51,269 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-10-13 19:52:51,270 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:52:51,274 INFO L553 sIntCurrentIteration]: We unified 29 AI predicates to 29 [2019-10-13 19:52:51,274 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:52:51,275 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 19:52:51,275 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4, 4] total 8 [2019-10-13 19:52:51,275 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908511713] [2019-10-13 19:52:51,276 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:52:51,277 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:52:51,277 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:52:51,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:52:51,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:52:51,277 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 3 states. [2019-10-13 19:52:51,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:52:51,281 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-10-13 19:52:51,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:52:51,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2019-10-13 19:52:51,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:52:51,282 INFO L225 Difference]: With dead ends: 31 [2019-10-13 19:52:51,282 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:52:51,282 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:52:51,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:52:51,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:52:51,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:52:51,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:52:51,283 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2019-10-13 19:52:51,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:52:51,284 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:52:51,284 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:52:51,284 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:52:51,284 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:52:51,487 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:52:51,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:52:51,556 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:52:51,557 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:52:51,557 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:52:51,557 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:52:51,557 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= 0 (+ ~SIZE~0 32768)) (<= ~SIZE~0 32767)) [2019-10-13 19:52:51,557 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:52:51,558 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:52:51,558 INFO L443 ceAbstractionStarter]: For program point L27-2(lines 27 30) no Hoare annotation was computed. [2019-10-13 19:52:51,558 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 8 45) no Hoare annotation was computed. [2019-10-13 19:52:51,558 INFO L439 ceAbstractionStarter]: At program point L27-3(lines 27 30) the Hoare annotation is: (or (not (<= 0 (+ |old(~SIZE~0)| 32768))) (not (<= |old(~SIZE~0)| 32767))) [2019-10-13 19:52:51,558 INFO L443 ceAbstractionStarter]: For program point L27-4(lines 27 30) no Hoare annotation was computed. [2019-10-13 19:52:51,558 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 43) no Hoare annotation was computed. [2019-10-13 19:52:51,559 INFO L443 ceAbstractionStarter]: For program point L11-2(lines 11 43) no Hoare annotation was computed. [2019-10-13 19:52:51,559 INFO L443 ceAbstractionStarter]: For program point L32-2(lines 32 35) no Hoare annotation was computed. [2019-10-13 19:52:51,559 INFO L439 ceAbstractionStarter]: At program point L32-3(lines 32 35) the Hoare annotation is: (or (not (<= 0 (+ |old(~SIZE~0)| 32768))) (not (<= |old(~SIZE~0)| 32767))) [2019-10-13 19:52:51,559 INFO L443 ceAbstractionStarter]: For program point L32-4(lines 32 35) no Hoare annotation was computed. [2019-10-13 19:52:51,559 INFO L443 ceAbstractionStarter]: For program point L37-2(lines 37 40) no Hoare annotation was computed. [2019-10-13 19:52:51,559 INFO L439 ceAbstractionStarter]: At program point L37-3(lines 37 40) the Hoare annotation is: (or (not (<= 0 (+ |old(~SIZE~0)| 32768))) (not (<= |old(~SIZE~0)| 32767))) [2019-10-13 19:52:51,560 INFO L439 ceAbstractionStarter]: At program point L37-4(lines 37 40) the Hoare annotation is: (or (= main_~sum~0 0) (not (<= 0 (+ |old(~SIZE~0)| 32768))) (not (<= |old(~SIZE~0)| 32767))) [2019-10-13 19:52:51,560 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 17 20) no Hoare annotation was computed. [2019-10-13 19:52:51,560 INFO L439 ceAbstractionStarter]: At program point L17-3(lines 17 20) the Hoare annotation is: (or (not (<= 0 (+ |old(~SIZE~0)| 32768))) (not (<= |old(~SIZE~0)| 32767))) [2019-10-13 19:52:51,560 INFO L443 ceAbstractionStarter]: For program point L17-4(lines 17 20) no Hoare annotation was computed. [2019-10-13 19:52:51,560 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 8 45) no Hoare annotation was computed. [2019-10-13 19:52:51,560 INFO L443 ceAbstractionStarter]: For program point L42(line 42) no Hoare annotation was computed. [2019-10-13 19:52:51,561 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 8 45) the Hoare annotation is: (or (not (<= 0 (+ |old(~SIZE~0)| 32768))) (and (<= 0 (+ ~SIZE~0 32768)) (<= ~SIZE~0 32767)) (not (<= |old(~SIZE~0)| 32767))) [2019-10-13 19:52:51,561 INFO L443 ceAbstractionStarter]: For program point L22-2(lines 22 25) no Hoare annotation was computed. [2019-10-13 19:52:51,561 INFO L439 ceAbstractionStarter]: At program point L22-3(lines 22 25) the Hoare annotation is: (or (not (<= 0 (+ |old(~SIZE~0)| 32768))) (not (<= |old(~SIZE~0)| 32767))) [2019-10-13 19:52:51,561 INFO L443 ceAbstractionStarter]: For program point L22-4(lines 22 25) no Hoare annotation was computed. [2019-10-13 19:52:51,561 INFO L443 ceAbstractionStarter]: For program point L3-3(line 3) no Hoare annotation was computed. [2019-10-13 19:52:51,562 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2019-10-13 19:52:51,562 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2019-10-13 19:52:51,562 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2019-10-13 19:52:51,562 INFO L443 ceAbstractionStarter]: For program point L3(line 3) no Hoare annotation was computed. [2019-10-13 19:52:51,562 INFO L443 ceAbstractionStarter]: For program point L3-1(line 3) no Hoare annotation was computed. [2019-10-13 19:52:51,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:52:51 BoogieIcfgContainer [2019-10-13 19:52:51,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:52:51,585 INFO L168 Benchmark]: Toolchain (without parser) took 2534.47 ms. Allocated memory was 145.2 MB in the beginning and 234.9 MB in the end (delta: 89.7 MB). Free memory was 103.7 MB in the beginning and 177.7 MB in the end (delta: -74.0 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2019-10-13 19:52:51,587 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 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. [2019-10-13 19:52:51,588 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.21 ms. Allocated memory is still 145.2 MB. Free memory was 103.5 MB in the beginning and 93.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-10-13 19:52:51,591 INFO L168 Benchmark]: Boogie Preprocessor took 131.48 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 93.1 MB in the beginning and 179.5 MB in the end (delta: -86.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-10-13 19:52:51,592 INFO L168 Benchmark]: RCFGBuilder took 364.23 ms. Allocated memory is still 201.9 MB. Free memory was 179.5 MB in the beginning and 162.9 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2019-10-13 19:52:51,594 INFO L168 Benchmark]: TraceAbstraction took 1697.86 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 162.9 MB in the beginning and 177.7 MB in the end (delta: -14.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2019-10-13 19:52:51,600 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 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 333.21 ms. Allocated memory is still 145.2 MB. Free memory was 103.5 MB in the beginning and 93.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.48 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 93.1 MB in the beginning and 179.5 MB in the end (delta: -86.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 364.23 ms. Allocated memory is still 201.9 MB. Free memory was 179.5 MB in the beginning and 162.9 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1697.86 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 162.9 MB in the beginning and 177.7 MB in the end (delta: -14.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 37]: Loop Invariant Derived loop invariant: !(0 <= \old(SIZE) + 32768) || !(\old(SIZE) <= 32767) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: !(0 <= \old(SIZE) + 32768) || !(\old(SIZE) <= 32767) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: !(0 <= \old(SIZE) + 32768) || !(\old(SIZE) <= 32767) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !(0 <= \old(SIZE) + 32768) || !(\old(SIZE) <= 32767) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: !(0 <= \old(SIZE) + 32768) || !(\old(SIZE) <= 32767) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 34 locations, 1 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 114 SDtfs, 35 SDslu, 93 SDs, 0 SdLazy, 69 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 15 PreInvPairs, 16 NumberOfFragments, 101 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 169 ConstructedInterpolants, 0 QuantifiedInterpolants, 6491 SizeOfPredicates, 3 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 15/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 192, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9655172413793104, AVG_VARS_REMOVED_DURING_WEAKENING: 0.8275862068965517, AVG_WEAKENED_CONJUNCTS: 0.5517241379310345, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...