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 0.1.24-112bae1 [2019-09-10 01:48:43,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:48:43,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:48:43,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:48:43,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:48:43,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:48:43,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:48:43,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:48:43,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:48:43,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:48:43,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:48:43,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:48:43,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:48:43,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:48:43,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:48:43,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:48:43,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:48:43,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:48:43,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:48:43,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:48:43,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:48:43,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:48:43,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:48:43,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:48:43,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 01:48:43,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 01:48:43,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 01:48:43,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 01:48:43,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 01:48:43,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 01:48:43,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:48:43,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:48:43,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:48:43,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:48:43,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:48:43,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:48:43,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:48:43,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:48:43,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:48:43,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:48:43,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:48:43,644 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 [2019-09-10 01:48:43,671 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:48:43,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:48:43,672 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:48:43,672 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:48:43,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:48:43,673 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:48:43,674 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:48:43,674 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:48:43,674 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:48:43,674 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:48:43,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:48:43,677 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:48:43,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:48:43,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:48:43,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:48:43,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:48:43,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:48:43,679 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:48:43,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:48:43,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:48:43,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:48:43,680 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:48:43,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:48:43,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:48:43,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:48:43,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:48:43,681 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:48:43,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:48:43,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:48:43,682 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:48:43,742 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:48:43,760 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:48:43,764 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:48:43,765 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:48:43,766 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:48:43,767 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/insertion_sort-2.c [2019-09-10 01:48:43,835 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32de0484e/63de750e076f45f195c6af8d286044c6/FLAG07c514997 [2019-09-10 01:48:44,286 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:48:44,287 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/insertion_sort-2.c [2019-09-10 01:48:44,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32de0484e/63de750e076f45f195c6af8d286044c6/FLAG07c514997 [2019-09-10 01:48:44,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32de0484e/63de750e076f45f195c6af8d286044c6 [2019-09-10 01:48:44,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:48:44,679 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:48:44,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:48:44,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:48:44,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:48:44,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:48:44" (1/1) ... [2019-09-10 01:48:44,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e32827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:44, skipping insertion in model container [2019-09-10 01:48:44,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:48:44" (1/1) ... [2019-09-10 01:48:44,695 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:48:44,712 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:48:44,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:48:44,915 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:48:44,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:48:44,955 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:48:44,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:44 WrapperNode [2019-09-10 01:48:44,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:48:44,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:48:44,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:48:44,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:48:45,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:44" (1/1) ... [2019-09-10 01:48:45,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:44" (1/1) ... [2019-09-10 01:48:45,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:44" (1/1) ... [2019-09-10 01:48:45,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:44" (1/1) ... [2019-09-10 01:48:45,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:44" (1/1) ... [2019-09-10 01:48:45,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:44" (1/1) ... [2019-09-10 01:48:45,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:44" (1/1) ... [2019-09-10 01:48:45,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:48:45,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:48:45,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:48:45,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:48:45,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:44" (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 [2019-09-10 01:48:45,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:48:45,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:48:45,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-10 01:48:45,129 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:48:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:48:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 01:48:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-10 01:48:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:48:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:48:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:48:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:48:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:48:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:48:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:48:45,405 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:48:45,406 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-10 01:48:45,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:48:45 BoogieIcfgContainer [2019-09-10 01:48:45,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:48:45,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:48:45,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:48:45,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:48:45,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:48:44" (1/3) ... [2019-09-10 01:48:45,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c40c905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:48:45, skipping insertion in model container [2019-09-10 01:48:45,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:44" (2/3) ... [2019-09-10 01:48:45,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c40c905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:48:45, skipping insertion in model container [2019-09-10 01:48:45,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:48:45" (3/3) ... [2019-09-10 01:48:45,415 INFO L109 eAbstractionObserver]: Analyzing ICFG insertion_sort-2.c [2019-09-10 01:48:45,422 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:48:45,430 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:48:45,448 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:48:45,471 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:48:45,471 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:48:45,471 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:48:45,471 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:48:45,471 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:48:45,471 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:48:45,472 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:48:45,472 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:48:45,484 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-09-10 01:48:45,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-10 01:48:45,493 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:45,494 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:45,496 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:45,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:45,502 INFO L82 PathProgramCache]: Analyzing trace with hash 637757472, now seen corresponding path program 1 times [2019-09-10 01:48:45,504 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:45,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:45,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:45,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:45,555 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:48:45,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:48:45,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:48:45,656 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:45,659 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:48:45,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:48:45,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:48:45,673 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-09-10 01:48:45,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:45,687 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-09-10 01:48:45,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:48:45,688 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-09-10 01:48:45,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:45,697 INFO L225 Difference]: With dead ends: 28 [2019-09-10 01:48:45,698 INFO L226 Difference]: Without dead ends: 23 [2019-09-10 01:48:45,699 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 [2019-09-10 01:48:45,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-09-10 01:48:45,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-09-10 01:48:45,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-10 01:48:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-09-10 01:48:45,735 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 13 [2019-09-10 01:48:45,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:45,735 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-09-10 01:48:45,735 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:48:45,736 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-09-10 01:48:45,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-10 01:48:45,737 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:45,737 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:45,737 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:45,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:45,738 INFO L82 PathProgramCache]: Analyzing trace with hash -962501754, now seen corresponding path program 1 times [2019-09-10 01:48:45,738 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:45,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:45,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:45,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:45,740 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:48:45,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:48:45,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 01:48:45,949 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:45,950 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 01:48:45,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 01:48:45,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:48:45,952 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 5 states. [2019-09-10 01:48:46,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:46,022 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-09-10 01:48:46,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 01:48:46,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-09-10 01:48:46,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:46,024 INFO L225 Difference]: With dead ends: 31 [2019-09-10 01:48:46,024 INFO L226 Difference]: Without dead ends: 29 [2019-09-10 01:48:46,025 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 [2019-09-10 01:48:46,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-10 01:48:46,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2019-09-10 01:48:46,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-10 01:48:46,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-09-10 01:48:46,031 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2019-09-10 01:48:46,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:46,032 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-09-10 01:48:46,032 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 01:48:46,032 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-09-10 01:48:46,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-10 01:48:46,033 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:46,033 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:46,033 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:46,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:46,034 INFO L82 PathProgramCache]: Analyzing trace with hash 513665657, now seen corresponding path program 1 times [2019-09-10 01:48:46,034 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:46,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:46,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:46,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:46,036 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:46,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:48:46,597 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:48:46,597 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:48:46,598 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2019-09-10 01:48:46,600 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [18], [21], [27], [33], [35], [39], [47], [57], [60], [62], [68], [69], [70], [72] [2019-09-10 01:48:46,662 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 01:48:46,663 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 01:48:46,740 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 01:48:46,742 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. [2019-09-10 01:48:46,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:46,747 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 01:48:46,800 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-10 01:48:46,801 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 01:48:46,803 INFO L420 sIntCurrentIteration]: We unified 18 AI predicates to 18 [2019-09-10 01:48:46,807 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 01:48:46,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 01:48:46,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 12 [2019-09-10 01:48:46,809 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:46,818 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:48:46,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:48:46,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:48:46,818 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 2 states. [2019-09-10 01:48:46,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:46,822 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-10 01:48:46,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:48:46,823 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-09-10 01:48:46,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:46,823 INFO L225 Difference]: With dead ends: 6 [2019-09-10 01:48:46,824 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:48:46,824 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 [2019-09-10 01:48:46,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:48:46,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:48:46,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:48:46,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:48:46,825 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-09-10 01:48:46,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:46,825 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:48:46,826 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:48:46,826 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:48:46,826 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:48:46,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:48:46 BoogieIcfgContainer [2019-09-10 01:48:46,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:48:46,836 INFO L168 Benchmark]: Toolchain (without parser) took 2155.03 ms. Allocated memory was 135.3 MB in the beginning and 231.2 MB in the end (delta: 95.9 MB). Free memory was 89.9 MB in the beginning and 192.2 MB in the end (delta: -102.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:48:46,837 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 135.3 MB. Free memory is still 108.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:48:46,839 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.87 ms. Allocated memory is still 135.3 MB. Free memory was 89.5 MB in the beginning and 79.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:46,842 INFO L168 Benchmark]: Boogie Preprocessor took 120.69 ms. Allocated memory was 135.3 MB in the beginning and 201.9 MB in the end (delta: 66.6 MB). Free memory was 79.6 MB in the beginning and 178.3 MB in the end (delta: -98.6 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:46,843 INFO L168 Benchmark]: RCFGBuilder took 330.61 ms. Allocated memory is still 201.9 MB. Free memory was 178.3 MB in the beginning and 162.6 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:46,844 INFO L168 Benchmark]: TraceAbstraction took 1423.78 ms. Allocated memory was 201.9 MB in the beginning and 231.2 MB in the end (delta: 29.4 MB). Free memory was 161.8 MB in the beginning and 192.2 MB in the end (delta: -30.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:48:46,854 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 135.3 MB. Free memory is still 108.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.87 ms. Allocated memory is still 135.3 MB. Free memory was 89.5 MB in the beginning and 79.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.69 ms. Allocated memory was 135.3 MB in the beginning and 201.9 MB in the end (delta: 66.6 MB). Free memory was 79.6 MB in the beginning and 178.3 MB in the end (delta: -98.6 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 330.61 ms. Allocated memory is still 201.9 MB. Free memory was 178.3 MB in the beginning and 162.6 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1423.78 ms. Allocated memory was 201.9 MB in the beginning and 231.2 MB in the end (delta: 29.4 MB). Free memory was 161.8 MB in the beginning and 192.2 MB in the end (delta: -30.4 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, 1.3s 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...