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/linear_sea.ch.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:25:02,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:25:02,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:25:02,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:25:02,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:25:02,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:25:02,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:25:02,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:25:02,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:25:02,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:25:02,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:25:02,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:25:02,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:25:02,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:25:02,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:25:02,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:25:02,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:25:02,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:25:02,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:25:02,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:25:02,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:25:02,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:25:02,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:25:02,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:25:02,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:25:02,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:25:02,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:25:02,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:25:02,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:25:02,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:25:02,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:25:02,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:25:02,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:25:02,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:25:02,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:25:02,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:25:02,852 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:25:02,867 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:25:02,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:25:02,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:25:02,868 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:25:02,868 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:25:02,869 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:25:02,869 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:25:02,869 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:25:02,869 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:25:02,870 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:25:02,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:25:02,870 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:25:02,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:25:02,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:25:02,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:25:02,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:25:02,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:25:02,872 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:25:02,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:25:02,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:25:02,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:25:02,872 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:25:02,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:25:02,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:25:02,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:25:02,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:25:02,874 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:25:02,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:25:02,874 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:25:02,874 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:25:02,924 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:25:02,936 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:25:02,940 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:25:02,943 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:25:02,944 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:25:02,945 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/linear_sea.ch.c [2019-09-20 13:25:03,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/886158d1b/44482582a54b44a8ae0e5bcdc1ad8e2d/FLAGbc01b6941 [2019-09-20 13:25:03,520 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:25:03,521 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/linear_sea.ch.c [2019-09-20 13:25:03,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/886158d1b/44482582a54b44a8ae0e5bcdc1ad8e2d/FLAGbc01b6941 [2019-09-20 13:25:03,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/886158d1b/44482582a54b44a8ae0e5bcdc1ad8e2d [2019-09-20 13:25:03,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:25:03,937 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:25:03,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:03,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:25:03,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:25:03,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:03" (1/1) ... [2019-09-20 13:25:03,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432b94cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:03, skipping insertion in model container [2019-09-20 13:25:03,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:03" (1/1) ... [2019-09-20 13:25:03,954 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:25:03,971 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:25:04,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:04,195 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:25:04,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:04,321 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:25:04,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:04 WrapperNode [2019-09-20 13:25:04,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:04,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:25:04,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:25:04,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:25:04,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:04" (1/1) ... [2019-09-20 13:25:04,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:04" (1/1) ... [2019-09-20 13:25:04,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:04" (1/1) ... [2019-09-20 13:25:04,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:04" (1/1) ... [2019-09-20 13:25:04,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:04" (1/1) ... [2019-09-20 13:25:04,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:04" (1/1) ... [2019-09-20 13:25:04,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:04" (1/1) ... [2019-09-20 13:25:04,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:25:04,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:25:04,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:25:04,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:25:04,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:25:04,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:25:04,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:25:04,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 13:25:04,424 INFO L138 BoogieDeclarations]: Found implementation of procedure linear_search [2019-09-20 13:25:04,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:25:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:25:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:25:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:25:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-20 13:25:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure linear_search [2019-09-20 13:25:04,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:25:04,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:25:04,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:25:04,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:25:04,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:25:04,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:25:04,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:25:04,676 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:25:04,676 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 13:25:04,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:04 BoogieIcfgContainer [2019-09-20 13:25:04,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:25:04,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:25:04,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:25:04,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:25:04,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:25:03" (1/3) ... [2019-09-20 13:25:04,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6097a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:04, skipping insertion in model container [2019-09-20 13:25:04,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:04" (2/3) ... [2019-09-20 13:25:04,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6097a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:04, skipping insertion in model container [2019-09-20 13:25:04,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:04" (3/3) ... [2019-09-20 13:25:04,689 INFO L109 eAbstractionObserver]: Analyzing ICFG linear_sea.ch.c [2019-09-20 13:25:04,701 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:25:04,710 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:25:04,732 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:25:04,763 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:25:04,763 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:25:04,763 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:25:04,763 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:25:04,764 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:25:04,764 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:25:04,764 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:25:04,764 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:25:04,781 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-09-20 13:25:04,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-20 13:25:04,792 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:04,793 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:04,795 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:04,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:04,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1860043698, now seen corresponding path program 1 times [2019-09-20 13:25:04,803 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:04,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:04,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:04,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:04,851 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:04,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:04,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:04,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:25:04,982 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:04,987 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:25:05,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:25:05,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:25:05,006 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-09-20 13:25:05,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:05,025 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-09-20 13:25:05,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:25:05,027 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-09-20 13:25:05,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:05,037 INFO L225 Difference]: With dead ends: 28 [2019-09-20 13:25:05,037 INFO L226 Difference]: Without dead ends: 21 [2019-09-20 13:25:05,040 INFO L636 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 [2019-09-20 13:25:05,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-20 13:25:05,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-20 13:25:05,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-20 13:25:05,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-09-20 13:25:05,085 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 18 [2019-09-20 13:25:05,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:05,086 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-09-20 13:25:05,086 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:25:05,086 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-09-20 13:25:05,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-20 13:25:05,087 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:05,087 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:05,088 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:05,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:05,089 INFO L82 PathProgramCache]: Analyzing trace with hash 916881159, now seen corresponding path program 1 times [2019-09-20 13:25:05,089 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:05,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:05,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:05,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:05,092 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:05,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:05,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:05,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:25:05,254 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:05,256 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:25:05,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:25:05,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:25:05,257 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 6 states. [2019-09-20 13:25:05,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:05,309 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-09-20 13:25:05,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:25:05,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-09-20 13:25:05,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:05,311 INFO L225 Difference]: With dead ends: 27 [2019-09-20 13:25:05,311 INFO L226 Difference]: Without dead ends: 21 [2019-09-20 13:25:05,313 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:25:05,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-20 13:25:05,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-20 13:25:05,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-20 13:25:05,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-09-20 13:25:05,319 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 20 [2019-09-20 13:25:05,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:05,320 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-09-20 13:25:05,320 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:25:05,321 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-09-20 13:25:05,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-20 13:25:05,322 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:05,323 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:05,324 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:05,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:05,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1635275802, now seen corresponding path program 1 times [2019-09-20 13:25:05,325 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:05,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:05,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:05,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:05,330 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:05,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:05,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:05,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:25:05,591 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:05,591 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:25:05,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:25:05,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:25:05,593 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2019-09-20 13:25:05,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:05,681 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-09-20 13:25:05,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:25:05,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-09-20 13:25:05,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:05,684 INFO L225 Difference]: With dead ends: 25 [2019-09-20 13:25:05,684 INFO L226 Difference]: Without dead ends: 24 [2019-09-20 13:25:05,685 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:25:05,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-09-20 13:25:05,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-09-20 13:25:05,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-20 13:25:05,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-09-20 13:25:05,690 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 20 [2019-09-20 13:25:05,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:05,690 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-09-20 13:25:05,690 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:25:05,690 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-09-20 13:25:05,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-20 13:25:05,691 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:05,692 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:05,692 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:05,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:05,692 INFO L82 PathProgramCache]: Analyzing trace with hash 636491705, now seen corresponding path program 1 times [2019-09-20 13:25:05,693 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:05,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:05,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:05,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:05,694 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:05,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:05,837 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:05,837 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:25:05,838 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2019-09-20 13:25:05,840 INFO L207 CegarAbsIntRunner]: [0], [5], [8], [14], [16], [23], [24], [25], [26], [30], [33], [35], [42], [45], [47], [53], [54], [55], [57], [58], [59] [2019-09-20 13:25:05,884 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:25:05,884 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:25:06,003 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-20 13:25:06,025 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:25:06,028 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 23 root evaluator evaluations with a maximum evaluation depth of 9. Performed 23 inverse root evaluator evaluations with a maximum inverse evaluation depth of 9. Never found a fixpoint. Largest state had 22 variables. [2019-09-20 13:25:06,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:06,032 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:25:06,077 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 77.5% of their original sizes. [2019-09-20 13:25:06,078 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:25:06,091 INFO L420 sIntCurrentIteration]: We unified 22 AI predicates to 22 [2019-09-20 13:25:06,091 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:25:06,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:25:06,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2019-09-20 13:25:06,092 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:06,093 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:25:06,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:25:06,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:25:06,094 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 4 states. [2019-09-20 13:25:06,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:06,108 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-09-20 13:25:06,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:25:06,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2019-09-20 13:25:06,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:06,109 INFO L225 Difference]: With dead ends: 7 [2019-09-20 13:25:06,109 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:25:06,110 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:25:06,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:25:06,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:25:06,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:25:06,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:25:06,111 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-09-20 13:25:06,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:06,111 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:25:06,111 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:25:06,112 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:25:06,112 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:25:06,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:25:06 BoogieIcfgContainer [2019-09-20 13:25:06,120 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:25:06,124 INFO L168 Benchmark]: Toolchain (without parser) took 2184.76 ms. Allocated memory was 137.4 MB in the beginning and 197.7 MB in the end (delta: 60.3 MB). Free memory was 83.1 MB in the beginning and 83.0 MB in the end (delta: 72.3 kB). Peak memory consumption was 60.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:06,125 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.4 MB. Free memory is still 101.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:25:06,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.91 ms. Allocated memory was 137.4 MB in the beginning and 197.7 MB in the end (delta: 60.3 MB). Free memory was 82.7 MB in the beginning and 175.7 MB in the end (delta: -93.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:06,128 INFO L168 Benchmark]: Boogie Preprocessor took 41.79 ms. Allocated memory is still 197.7 MB. Free memory was 175.7 MB in the beginning and 173.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:06,129 INFO L168 Benchmark]: RCFGBuilder took 314.04 ms. Allocated memory is still 197.7 MB. Free memory was 173.5 MB in the beginning and 157.5 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:06,131 INFO L168 Benchmark]: TraceAbstraction took 1439.99 ms. Allocated memory is still 197.7 MB. Free memory was 157.5 MB in the beginning and 83.0 MB in the end (delta: 74.4 MB). Peak memory consumption was 74.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:06,141 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 137.4 MB. Free memory is still 101.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 383.91 ms. Allocated memory was 137.4 MB in the beginning and 197.7 MB in the end (delta: 60.3 MB). Free memory was 82.7 MB in the beginning and 175.7 MB in the end (delta: -93.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.79 ms. Allocated memory is still 197.7 MB. Free memory was 175.7 MB in the beginning and 173.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 314.04 ms. Allocated memory is still 197.7 MB. Free memory was 173.5 MB in the beginning and 157.5 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1439.99 ms. Allocated memory is still 197.7 MB. Free memory was 157.5 MB in the beginning and 83.0 MB in the end (delta: 74.4 MB). Peak memory consumption was 74.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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 5 procedures, 28 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 76 SDtfs, 25 SDslu, 110 SDs, 0 SdLazy, 35 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 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, 0.9715909090909091 AbsIntWeakeningRatio, 1.3181818181818181 AbsIntAvgWeakeningVarsNumRemoved, 1.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 3795 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...