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/standard_copy3_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:29:49,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:29:49,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:29:49,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:29:49,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:29:49,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:29:49,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:29:49,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:29:49,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:29:49,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:29:49,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:29:49,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:29:49,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:29:49,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:29:49,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:29:49,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:29:49,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:29:49,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:29:49,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:29:49,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:29:49,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:29:49,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:29:49,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:29:49,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:29:49,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:29:49,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:29:49,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:29:49,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:29:49,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:29:49,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:29:49,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:29:49,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:29:49,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:29:49,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:29:49,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:29:49,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:29:49,707 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 [2019-10-02 16:29:49,733 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:29:49,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:29:49,734 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:29:49,737 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:29:49,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:29:49,738 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:29:49,738 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:29:49,738 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:29:49,738 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:29:49,739 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:29:49,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:29:49,741 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:29:49,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:29:49,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:29:49,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:29:49,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:29:49,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:29:49,742 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:29:49,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:29:49,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:29:49,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:29:49,743 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:29:49,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:29:49,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:29:49,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:29:49,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:29:49,745 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:29:49,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:29:49,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:29:49,745 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:29:49,781 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:29:49,794 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:29:49,798 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:29:49,800 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:29:49,800 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:29:49,802 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy3_ground-1.i [2019-10-02 16:29:49,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c3ac5cf/0c97320a492f43ea81e43fb82eaa894e/FLAG5fb3f08ac [2019-10-02 16:29:50,298 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:29:50,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy3_ground-1.i [2019-10-02 16:29:50,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c3ac5cf/0c97320a492f43ea81e43fb82eaa894e/FLAG5fb3f08ac [2019-10-02 16:29:50,705 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c3ac5cf/0c97320a492f43ea81e43fb82eaa894e [2019-10-02 16:29:50,714 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:29:50,715 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:29:50,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:50,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:29:50,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:29:50,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@148b2de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50, skipping insertion in model container [2019-10-02 16:29:50,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,734 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:29:50,757 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:29:50,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:50,973 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:29:51,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:51,129 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:29:51,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51 WrapperNode [2019-10-02 16:29:51,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:51,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:29:51,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:29:51,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:29:51,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... [2019-10-02 16:29:51,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:29:51,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:29:51,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:29:51,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:29:51,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:29:51,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:29:51,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:29:51,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:29:51,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:29:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:29:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:29:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:29:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:29:51,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:29:51,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:29:51,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:29:51,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:29:51,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:29:51,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:29:51,712 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:29:51,712 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-02 16:29:51,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:51 BoogieIcfgContainer [2019-10-02 16:29:51,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:29:51,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:29:51,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:29:51,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:29:51,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:29:50" (1/3) ... [2019-10-02 16:29:51,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbdbb44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:51, skipping insertion in model container [2019-10-02 16:29:51,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:51" (2/3) ... [2019-10-02 16:29:51,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbdbb44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:51, skipping insertion in model container [2019-10-02 16:29:51,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:51" (3/3) ... [2019-10-02 16:29:51,722 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy3_ground-1.i [2019-10-02 16:29:51,733 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:29:51,742 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:29:51,759 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:29:51,787 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:29:51,787 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:29:51,788 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:29:51,788 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:29:51,788 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:29:51,788 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:29:51,788 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:29:51,789 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:29:51,804 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-10-02 16:29:51,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-02 16:29:51,813 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:51,813 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:51,815 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:51,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:51,820 INFO L82 PathProgramCache]: Analyzing trace with hash -496428460, now seen corresponding path program 1 times [2019-10-02 16:29:51,821 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:51,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:51,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:51,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:51,871 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:51,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:29:51,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:51,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:29:51,974 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:51,980 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:51,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:51,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:51,994 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-10-02 16:29:52,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:52,010 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2019-10-02 16:29:52,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:52,012 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-10-02 16:29:52,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:52,022 INFO L225 Difference]: With dead ends: 33 [2019-10-02 16:29:52,022 INFO L226 Difference]: Without dead ends: 28 [2019-10-02 16:29:52,024 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:52,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-02 16:29:52,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-02 16:29:52,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-02 16:29:52,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-10-02 16:29:52,061 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 19 [2019-10-02 16:29:52,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:52,062 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-10-02 16:29:52,062 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:52,062 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-10-02 16:29:52,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-02 16:29:52,063 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:52,063 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:52,064 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:52,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:52,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1263989582, now seen corresponding path program 1 times [2019-10-02 16:29:52,064 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:52,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:52,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,067 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:52,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:29:52,124 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:52,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:52,125 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:52,126 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:52,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:52,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:52,127 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 3 states. [2019-10-02 16:29:52,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:52,152 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2019-10-02 16:29:52,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:52,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-02 16:29:52,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:52,154 INFO L225 Difference]: With dead ends: 30 [2019-10-02 16:29:52,154 INFO L226 Difference]: Without dead ends: 30 [2019-10-02 16:29:52,155 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:52,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-02 16:29:52,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2019-10-02 16:29:52,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-02 16:29:52,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-10-02 16:29:52,168 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 19 [2019-10-02 16:29:52,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:52,168 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-10-02 16:29:52,168 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:52,168 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-10-02 16:29:52,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-02 16:29:52,171 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:52,171 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:52,172 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:52,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:52,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1258945684, now seen corresponding path program 1 times [2019-10-02 16:29:52,173 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:52,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:52,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,176 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:52,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:29:52,232 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:52,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:52,233 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:52,233 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:52,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:52,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:52,234 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 3 states. [2019-10-02 16:29:52,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:52,292 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2019-10-02 16:29:52,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:52,294 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-10-02 16:29:52,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:52,295 INFO L225 Difference]: With dead ends: 35 [2019-10-02 16:29:52,297 INFO L226 Difference]: Without dead ends: 35 [2019-10-02 16:29:52,298 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:52,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-02 16:29:52,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2019-10-02 16:29:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-02 16:29:52,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2019-10-02 16:29:52,308 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 21 [2019-10-02 16:29:52,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:52,309 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-10-02 16:29:52,309 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:52,309 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2019-10-02 16:29:52,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-02 16:29:52,311 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:52,311 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:52,311 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:52,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:52,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1930458438, now seen corresponding path program 1 times [2019-10-02 16:29:52,312 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:52,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:52,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:52,317 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:52,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-02 16:29:52,447 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:29:52,447 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:29:52,448 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2019-10-02 16:29:52,450 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [25], [27], [29], [33], [39], [41], [43], [47], [53], [55], [57], [61], [69], [79], [82], [84], [90], [91], [92], [94] [2019-10-02 16:29:52,492 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:29:52,492 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:29:52,568 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:29:52,570 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 33 variables. [2019-10-02 16:29:52,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:52,574 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:29:52,639 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 16:29:52,639 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:29:52,642 INFO L420 sIntCurrentIteration]: We unified 26 AI predicates to 26 [2019-10-02 16:29:52,643 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:29:52,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:29:52,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-10-02 16:29:52,644 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:52,645 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:52,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:52,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:52,647 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 2 states. [2019-10-02 16:29:52,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:52,648 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 16:29:52,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:52,649 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2019-10-02 16:29:52,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:52,649 INFO L225 Difference]: With dead ends: 6 [2019-10-02 16:29:52,649 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:29:52,650 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:52,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:29:52,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:29:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:29:52,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:29:52,652 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2019-10-02 16:29:52,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:52,652 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:29:52,652 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:52,652 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:29:52,653 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:29:52,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:29:52 BoogieIcfgContainer [2019-10-02 16:29:52,659 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:29:52,663 INFO L168 Benchmark]: Toolchain (without parser) took 1945.22 ms. Allocated memory was 136.3 MB in the beginning and 196.6 MB in the end (delta: 60.3 MB). Free memory was 83.6 MB in the beginning and 104.7 MB in the end (delta: -21.1 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:52,664 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 136.3 MB. Free memory was 102.3 MB in the beginning and 102.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:29:52,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.88 ms. Allocated memory was 136.3 MB in the beginning and 196.6 MB in the end (delta: 60.3 MB). Free memory was 83.4 MB in the beginning and 174.8 MB in the end (delta: -91.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:52,669 INFO L168 Benchmark]: Boogie Preprocessor took 53.43 ms. Allocated memory is still 196.6 MB. Free memory was 174.8 MB in the beginning and 172.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:52,670 INFO L168 Benchmark]: RCFGBuilder took 529.50 ms. Allocated memory is still 196.6 MB. Free memory was 172.4 MB in the beginning and 154.9 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:52,671 INFO L168 Benchmark]: TraceAbstraction took 944.13 ms. Allocated memory is still 196.6 MB. Free memory was 154.9 MB in the beginning and 104.7 MB in the end (delta: 50.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:52,678 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 136.3 MB. Free memory was 102.3 MB in the beginning and 102.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 413.88 ms. Allocated memory was 136.3 MB in the beginning and 196.6 MB in the end (delta: 60.3 MB). Free memory was 83.4 MB in the beginning and 174.8 MB in the end (delta: -91.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.43 ms. Allocated memory is still 196.6 MB. Free memory was 174.8 MB in the beginning and 172.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 529.50 ms. Allocated memory is still 196.6 MB. Free memory was 172.4 MB in the beginning and 154.9 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 944.13 ms. Allocated memory is still 196.6 MB. Free memory was 154.9 MB in the beginning and 104.7 MB in the end (delta: 50.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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, 33 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 98 SDtfs, 4 SDslu, 48 SDs, 0 SdLazy, 20 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 0.9134615384615384 AbsIntWeakeningRatio, 1.0 AbsIntAvgWeakeningVarsNumRemoved, 0.23076923076923078 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 1956 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 4/5 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...