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/loops/insertion_sort-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:36:38,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:36:38,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:36:38,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-03 20:36:38,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:36:38,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:36:38,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:36:38,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:36:38,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:36:38,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:36:38,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:36:38,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:36:38,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:36:38,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:36:38,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:36:38,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:36:38,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:36:38,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 20:36:38,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 20:36:38,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 20:36:38,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 20:36:38,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 20:36:38,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 20:36:38,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 20:36:38,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 20:36:38,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:36:38,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:36:38,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:36:38,709 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 [2019-09-03 20:36:38,727 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:36:38,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:36:38,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-03 20:36:38,730 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-03 20:36:38,730 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-03 20:36:38,731 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-03 20:36:38,731 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-03 20:36:38,731 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-03 20:36:38,731 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-03 20:36:38,731 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-03 20:36:38,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:36:38,732 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:36:38,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:36:38,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:36:38,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:36:38,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:36:38,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:36:38,735 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:36:38,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:36:38,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:36:38,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:36:38,735 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-03 20:36:38,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:36:38,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:36:38,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:36:38,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:36:38,737 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-03 20:36:38,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:36:38,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:36:38,738 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-03 20:36:38,777 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:36:38,793 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:36:38,801 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:36:38,802 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:36:38,803 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:36:38,804 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/insertion_sort-2.c [2019-09-03 20:36:38,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25fecf952/a6a65009f7d44acc980e75703d49aeb7/FLAG334bb67b8 [2019-09-03 20:36:39,305 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:36:39,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/insertion_sort-2.c [2019-09-03 20:36:39,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25fecf952/a6a65009f7d44acc980e75703d49aeb7/FLAG334bb67b8 [2019-09-03 20:36:39,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25fecf952/a6a65009f7d44acc980e75703d49aeb7 [2019-09-03 20:36:39,742 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:36:39,744 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:36:39,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:36:39,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:36:39,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:36:39,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:36:39" (1/1) ... [2019-09-03 20:36:39,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dc0faf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:39, skipping insertion in model container [2019-09-03 20:36:39,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:36:39" (1/1) ... [2019-09-03 20:36:39,764 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:36:39,786 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:36:40,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:36:40,024 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:36:40,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:36:40,062 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:36:40,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:40 WrapperNode [2019-09-03 20:36:40,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:36:40,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:36:40,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:36:40,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:36:40,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:40" (1/1) ... [2019-09-03 20:36:40,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:40" (1/1) ... [2019-09-03 20:36:40,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:40" (1/1) ... [2019-09-03 20:36:40,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:40" (1/1) ... [2019-09-03 20:36:40,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:40" (1/1) ... [2019-09-03 20:36:40,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:40" (1/1) ... [2019-09-03 20:36:40,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:40" (1/1) ... [2019-09-03 20:36:40,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:36:40,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:36:40,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:36:40,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:36:40,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:40" (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 [2019-09-03 20:36:40,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:36:40,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:36:40,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 20:36:40,243 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:36:40,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:36:40,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:36:40,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-03 20:36:40,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:36:40,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-03 20:36:40,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-03 20:36:40,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-03 20:36:40,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-03 20:36:40,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:36:40,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:36:40,498 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:36:40,499 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-03 20:36:40,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:36:40 BoogieIcfgContainer [2019-09-03 20:36:40,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:36:40,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:36:40,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:36:40,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:36:40,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:36:39" (1/3) ... [2019-09-03 20:36:40,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fbc84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:36:40, skipping insertion in model container [2019-09-03 20:36:40,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:36:40" (2/3) ... [2019-09-03 20:36:40,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fbc84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:36:40, skipping insertion in model container [2019-09-03 20:36:40,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:36:40" (3/3) ... [2019-09-03 20:36:40,508 INFO L109 eAbstractionObserver]: Analyzing ICFG insertion_sort-2.c [2019-09-03 20:36:40,519 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:36:40,534 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:36:40,567 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:36:40,609 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:36:40,609 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-03 20:36:40,609 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:36:40,609 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:36:40,609 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:36:40,610 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:36:40,610 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:36:40,610 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:36:40,625 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-09-03 20:36:40,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-03 20:36:40,633 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:36:40,633 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:36:40,635 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:36:40,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:36:40,640 INFO L82 PathProgramCache]: Analyzing trace with hash 637757472, now seen corresponding path program 1 times [2019-09-03 20:36:40,642 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:36:40,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:40,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:36:40,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:40,686 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:36:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:36:40,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:36:40,778 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:36:40,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 20:36:40,779 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:36:40,782 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:36:40,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:36:40,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:36:40,796 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-09-03 20:36:40,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:36:40,814 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-09-03 20:36:40,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:36:40,815 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-09-03 20:36:40,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:36:40,825 INFO L225 Difference]: With dead ends: 28 [2019-09-03 20:36:40,825 INFO L226 Difference]: Without dead ends: 23 [2019-09-03 20:36:40,827 INFO L628 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 [2019-09-03 20:36:40,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-09-03 20:36:40,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-09-03 20:36:40,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-03 20:36:40,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-09-03 20:36:40,864 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 13 [2019-09-03 20:36:40,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:36:40,865 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-09-03 20:36:40,865 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:36:40,865 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-09-03 20:36:40,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-03 20:36:40,866 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:36:40,866 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:36:40,867 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:36:40,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:36:40,867 INFO L82 PathProgramCache]: Analyzing trace with hash -962501754, now seen corresponding path program 1 times [2019-09-03 20:36:40,868 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:36:40,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:40,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:36:40,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:40,870 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:36:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:36:41,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:36:41,101 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:36:41,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 20:36:41,102 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:36:41,104 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 20:36:41,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 20:36:41,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-03 20:36:41,105 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 5 states. [2019-09-03 20:36:41,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:36:41,196 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-09-03 20:36:41,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 20:36:41,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-09-03 20:36:41,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:36:41,199 INFO L225 Difference]: With dead ends: 31 [2019-09-03 20:36:41,199 INFO L226 Difference]: Without dead ends: 29 [2019-09-03 20:36:41,200 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-03 20:36:41,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-03 20:36:41,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2019-09-03 20:36:41,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-03 20:36:41,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-09-03 20:36:41,206 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2019-09-03 20:36:41,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:36:41,206 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-09-03 20:36:41,206 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 20:36:41,207 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-09-03 20:36:41,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-03 20:36:41,208 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:36:41,208 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:36:41,208 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:36:41,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:36:41,209 INFO L82 PathProgramCache]: Analyzing trace with hash 513665657, now seen corresponding path program 1 times [2019-09-03 20:36:41,209 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:36:41,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:41,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:36:41,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:36:41,211 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:36:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:36:41,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:36:41,768 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 20:36:41,768 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-03 20:36:41,769 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2019-09-03 20:36:41,772 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [18], [21], [27], [33], [35], [39], [47], [57], [60], [62], [68], [69], [70], [72] [2019-09-03 20:36:41,821 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-03 20:36:41,822 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-03 20:36:41,953 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-03 20:36:41,955 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 16 root evaluator evaluations with a maximum evaluation depth of 0. Performed 16 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 26 variables. [2019-09-03 20:36:41,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:36:41,961 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-03 20:36:42,013 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-03 20:36:42,013 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-03 20:36:42,015 INFO L420 sIntCurrentIteration]: We unified 18 AI predicates to 18 [2019-09-03 20:36:42,019 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-03 20:36:42,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:36:42,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 12 [2019-09-03 20:36:42,021 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:36:42,026 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:36:42,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:36:42,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:36:42,027 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 2 states. [2019-09-03 20:36:42,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:36:42,028 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-03 20:36:42,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:36:42,029 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-09-03 20:36:42,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:36:42,029 INFO L225 Difference]: With dead ends: 6 [2019-09-03 20:36:42,029 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 20:36:42,030 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:36:42,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 20:36:42,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 20:36:42,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 20:36:42,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 20:36:42,032 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-09-03 20:36:42,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:36:42,032 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 20:36:42,032 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:36:42,032 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 20:36:42,033 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 20:36:42,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 08:36:42 BoogieIcfgContainer [2019-09-03 20:36:42,038 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 20:36:42,040 INFO L168 Benchmark]: Toolchain (without parser) took 2295.80 ms. Allocated memory was 134.2 MB in the beginning and 227.5 MB in the end (delta: 93.3 MB). Free memory was 88.9 MB in the beginning and 190.7 MB in the end (delta: -101.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-03 20:36:42,041 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 134.2 MB. Free memory was 107.2 MB in the beginning and 107.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 20:36:42,042 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.65 ms. Allocated memory is still 134.2 MB. Free memory was 88.7 MB in the beginning and 78.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:42,043 INFO L168 Benchmark]: Boogie Preprocessor took 126.66 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 78.2 MB in the beginning and 176.7 MB in the end (delta: -98.4 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:42,044 INFO L168 Benchmark]: RCFGBuilder took 310.58 ms. Allocated memory is still 200.8 MB. Free memory was 176.7 MB in the beginning and 161.2 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2019-09-03 20:36:42,045 INFO L168 Benchmark]: TraceAbstraction took 1535.71 ms. Allocated memory was 200.8 MB in the beginning and 227.5 MB in the end (delta: 26.7 MB). Free memory was 161.2 MB in the beginning and 190.7 MB in the end (delta: -29.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-03 20:36:42,049 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 134.2 MB. Free memory was 107.2 MB in the beginning and 107.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 316.65 ms. Allocated memory is still 134.2 MB. Free memory was 88.7 MB in the beginning and 78.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.66 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 78.2 MB in the beginning and 176.7 MB in the end (delta: -98.4 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 310.58 ms. Allocated memory is still 200.8 MB. Free memory was 176.7 MB in the beginning and 161.2 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1535.71 ms. Allocated memory was 200.8 MB in the beginning and 227.5 MB in the end (delta: 26.7 MB). Free memory was 161.2 MB in the beginning and 190.7 MB in the end (delta: -29.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 59 SDtfs, 10 SDslu, 43 SDs, 0 SdLazy, 12 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9027777777777778 AbsIntWeakeningRatio, 1.1666666666666667 AbsIntAvgWeakeningVarsNumRemoved, 0.3333333333333333 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 4554 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...