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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/array-examples/sanfoundry_24-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:26:27,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:26:27,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:26:27,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:26:27,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:26:27,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:26:27,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:26:27,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:26:27,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:26:27,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:26:27,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:26:27,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:26:27,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:26:27,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:26:27,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:26:27,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:26:27,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:26:27,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:26:27,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:26:27,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:26:27,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:26:27,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:26:27,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:26:27,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:26:27,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:26:27,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:26:27,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:26:27,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:26:27,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:26:27,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:26:27,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:26:27,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:26:27,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:26:27,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:26:27,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:26:27,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:26:27,786 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:26:27,810 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:26:27,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:26:27,811 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:26:27,811 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:26:27,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:26:27,812 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:26:27,812 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:26:27,812 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:26:27,812 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:26:27,813 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:26:27,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:26:27,814 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:26:27,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:26:27,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:26:27,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:26:27,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:26:27,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:26:27,815 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:26:27,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:26:27,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:26:27,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:26:27,816 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:26:27,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:26:27,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:26:27,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:26:27,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:26:27,817 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:26:27,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:26:27,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:26:27,817 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:26:27,860 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:26:27,877 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:26:27,882 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:26:27,884 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:26:27,891 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:26:27,892 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sanfoundry_24-1.i [2019-09-20 13:26:27,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6734f5c5/9b16339353824f15a28ee6fbdca83934/FLAG77ff45ac0 [2019-09-20 13:26:28,481 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:26:28,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sanfoundry_24-1.i [2019-09-20 13:26:28,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6734f5c5/9b16339353824f15a28ee6fbdca83934/FLAG77ff45ac0 [2019-09-20 13:26:28,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6734f5c5/9b16339353824f15a28ee6fbdca83934 [2019-09-20 13:26:28,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:26:28,849 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:26:28,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:26:28,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:26:28,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:26:28,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:28" (1/1) ... [2019-09-20 13:26:28,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4382d9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:28, skipping insertion in model container [2019-09-20 13:26:28,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:28" (1/1) ... [2019-09-20 13:26:28,865 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:26:28,883 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:26:29,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:26:29,083 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:26:29,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:26:29,217 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:26:29,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:29 WrapperNode [2019-09-20 13:26:29,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:26:29,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:26:29,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:26:29,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:26:29,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:29" (1/1) ... [2019-09-20 13:26:29,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:29" (1/1) ... [2019-09-20 13:26:29,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:29" (1/1) ... [2019-09-20 13:26:29,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:29" (1/1) ... [2019-09-20 13:26:29,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:29" (1/1) ... [2019-09-20 13:26:29,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:29" (1/1) ... [2019-09-20 13:26:29,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:29" (1/1) ... [2019-09-20 13:26:29,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:26:29,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:26:29,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:26:29,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:26:29,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:29" (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 [2019-09-20 13:26:29,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:26:29,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:26:29,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 13:26:29,323 INFO L138 BoogieDeclarations]: Found implementation of procedure printEven [2019-09-20 13:26:29,323 INFO L138 BoogieDeclarations]: Found implementation of procedure printOdd [2019-09-20 13:26:29,324 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:26:29,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:26:29,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:26:29,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:26:29,324 INFO L130 BoogieDeclarations]: Found specification of procedure printEven [2019-09-20 13:26:29,325 INFO L130 BoogieDeclarations]: Found specification of procedure printOdd [2019-09-20 13:26:29,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:26:29,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:26:29,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:26:29,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:26:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:26:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:26:29,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:26:29,574 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:26:29,574 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-20 13:26:29,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:29 BoogieIcfgContainer [2019-09-20 13:26:29,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:26:29,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:26:29,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:26:29,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:26:29,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:26:28" (1/3) ... [2019-09-20 13:26:29,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9d8352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:29, skipping insertion in model container [2019-09-20 13:26:29,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:29" (2/3) ... [2019-09-20 13:26:29,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9d8352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:29, skipping insertion in model container [2019-09-20 13:26:29,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:29" (3/3) ... [2019-09-20 13:26:29,586 INFO L109 eAbstractionObserver]: Analyzing ICFG sanfoundry_24-1.i [2019-09-20 13:26:29,598 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:26:29,607 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:26:29,626 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:26:29,656 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:26:29,656 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:26:29,657 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:26:29,657 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:26:29,657 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:26:29,657 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:26:29,657 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:26:29,657 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:26:29,675 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2019-09-20 13:26:29,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-20 13:26:29,688 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:26:29,689 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:26:29,691 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:26:29,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:29,697 INFO L82 PathProgramCache]: Analyzing trace with hash -762079996, now seen corresponding path program 1 times [2019-09-20 13:26:29,700 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:26:29,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:29,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:29,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:29,760 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:26:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:29,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:26:29,957 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:26:29,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:26:29,958 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:26:29,963 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:26:29,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:26:29,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:26:29,984 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 5 states. [2019-09-20 13:26:30,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:26:30,117 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2019-09-20 13:26:30,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:26:30,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-09-20 13:26:30,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:26:30,129 INFO L225 Difference]: With dead ends: 58 [2019-09-20 13:26:30,129 INFO L226 Difference]: Without dead ends: 46 [2019-09-20 13:26:30,131 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:26:30,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-09-20 13:26:30,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2019-09-20 13:26:30,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-09-20 13:26:30,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-09-20 13:26:30,180 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 16 [2019-09-20 13:26:30,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:26:30,181 INFO L475 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-09-20 13:26:30,181 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:26:30,182 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-09-20 13:26:30,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-20 13:26:30,183 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:26:30,183 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:26:30,183 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:26:30,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:30,184 INFO L82 PathProgramCache]: Analyzing trace with hash 204295910, now seen corresponding path program 1 times [2019-09-20 13:26:30,184 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:26:30,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:30,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:30,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:30,187 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:26:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:26:30,399 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:26:30,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:26:30,399 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:26:30,401 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:26:30,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:26:30,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:26:30,402 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 8 states. [2019-09-20 13:26:30,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:26:30,542 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-09-20 13:26:30,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:26:30,542 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-09-20 13:26:30,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:26:30,544 INFO L225 Difference]: With dead ends: 40 [2019-09-20 13:26:30,544 INFO L226 Difference]: Without dead ends: 40 [2019-09-20 13:26:30,545 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:26:30,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-20 13:26:30,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-09-20 13:26:30,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-20 13:26:30,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2019-09-20 13:26:30,552 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 18 [2019-09-20 13:26:30,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:26:30,553 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2019-09-20 13:26:30,553 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:26:30,553 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2019-09-20 13:26:30,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-20 13:26:30,555 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:26:30,555 INFO L407 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] [2019-09-20 13:26:30,555 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:26:30,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:30,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1004823058, now seen corresponding path program 1 times [2019-09-20 13:26:30,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:26:30,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:30,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:30,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:30,559 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:26:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:30,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-20 13:26:30,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:26:30,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:26:30,837 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:26:30,838 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:26:30,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:26:30,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:26:30,839 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 8 states. [2019-09-20 13:26:30,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:26:30,969 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2019-09-20 13:26:30,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:26:30,970 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2019-09-20 13:26:30,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:26:30,971 INFO L225 Difference]: With dead ends: 38 [2019-09-20 13:26:30,971 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:26:30,971 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:26:30,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:26:30,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:26:30,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:26:30,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:26:30,972 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-09-20 13:26:30,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:26:30,973 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:26:30,973 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:26:30,973 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:26:30,973 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:26:30,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:26:30 BoogieIcfgContainer [2019-09-20 13:26:30,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:26:30,982 INFO L168 Benchmark]: Toolchain (without parser) took 2132.26 ms. Allocated memory was 132.6 MB in the beginning and 223.9 MB in the end (delta: 91.2 MB). Free memory was 86.6 MB in the beginning and 190.1 MB in the end (delta: -103.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:26:30,983 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 132.6 MB. Free memory is still 105.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:26:30,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.74 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 86.6 MB in the beginning and 176.9 MB in the end (delta: -90.3 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:30,985 INFO L168 Benchmark]: Boogie Preprocessor took 45.35 ms. Allocated memory is still 199.8 MB. Free memory was 176.9 MB in the beginning and 174.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:30,986 INFO L168 Benchmark]: RCFGBuilder took 308.45 ms. Allocated memory is still 199.8 MB. Free memory was 174.7 MB in the beginning and 158.3 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:30,987 INFO L168 Benchmark]: TraceAbstraction took 1401.83 ms. Allocated memory was 199.8 MB in the beginning and 223.9 MB in the end (delta: 24.1 MB). Free memory was 158.3 MB in the beginning and 190.1 MB in the end (delta: -31.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:26:30,991 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 132.6 MB. Free memory is still 105.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 371.74 ms. Allocated memory was 132.6 MB in the beginning and 199.8 MB in the end (delta: 67.1 MB). Free memory was 86.6 MB in the beginning and 176.9 MB in the end (delta: -90.3 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.35 ms. Allocated memory is still 199.8 MB. Free memory was 176.9 MB in the beginning and 174.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 308.45 ms. Allocated memory is still 199.8 MB. Free memory was 174.7 MB in the beginning and 158.3 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1401.83 ms. Allocated memory was 199.8 MB in the beginning and 223.9 MB in the end (delta: 24.1 MB). Free memory was 158.3 MB in the beginning and 190.1 MB in the end (delta: -31.8 MB). There was no memory consumed. 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 39 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 100 SDtfs, 42 SDslu, 411 SDs, 0 SdLazy, 143 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 10 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 2672 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...