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-crafted/xor5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:04:21,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:04:21,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:04:21,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:04:21,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:04:21,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:04:21,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:04:22,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:04:22,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:04:22,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:04:22,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:04:22,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:04:22,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:04:22,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:04:22,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:04:22,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:04:22,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:04:22,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:04:22,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:04:22,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:04:22,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:04:22,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:04:22,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:04:22,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:04:22,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:04:22,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:04:22,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:04:22,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:04:22,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:04:22,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:04:22,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:04:22,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:04:22,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:04:22,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:04:22,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:04:22,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:04:22,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:04:22,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:04:22,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:04:22,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:04:22,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:04:22,035 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 [2019-09-16 17:04:22,056 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:04:22,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:04:22,057 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:04:22,057 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:04:22,058 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:04:22,058 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:04:22,058 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:04:22,059 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:04:22,059 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:04:22,059 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:04:22,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:04:22,060 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:04:22,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:04:22,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:04:22,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:04:22,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:04:22,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:04:22,062 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:04:22,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:04:22,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:04:22,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:04:22,063 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:04:22,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:04:22,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:04:22,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:04:22,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:04:22,065 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:04:22,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:04:22,065 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:04:22,065 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:04:22,102 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:04:22,121 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:04:22,125 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:04:22,126 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:04:22,129 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:04:22,129 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/xor5.i [2019-09-16 17:04:22,200 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba381d314/87b44a724a3340fd98c4aa20d5717cb6/FLAG9d74b902e [2019-09-16 17:04:22,638 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:04:22,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/xor5.i [2019-09-16 17:04:22,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba381d314/87b44a724a3340fd98c4aa20d5717cb6/FLAG9d74b902e [2019-09-16 17:04:22,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba381d314/87b44a724a3340fd98c4aa20d5717cb6 [2019-09-16 17:04:23,013 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:04:23,015 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:04:23,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:04:23,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:04:23,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:04:23,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:04:22" (1/1) ... [2019-09-16 17:04:23,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6758265e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:23, skipping insertion in model container [2019-09-16 17:04:23,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:04:22" (1/1) ... [2019-09-16 17:04:23,032 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:04:23,047 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:04:23,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:04:23,258 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:04:23,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:04:23,303 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:04:23,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:23 WrapperNode [2019-09-16 17:04:23,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:04:23,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:04:23,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:04:23,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:04:23,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:23" (1/1) ... [2019-09-16 17:04:23,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:23" (1/1) ... [2019-09-16 17:04:23,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:23" (1/1) ... [2019-09-16 17:04:23,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:23" (1/1) ... [2019-09-16 17:04:23,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:23" (1/1) ... [2019-09-16 17:04:23,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:23" (1/1) ... [2019-09-16 17:04:23,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:23" (1/1) ... [2019-09-16 17:04:23,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:04:23,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:04:23,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:04:23,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:04:23,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:23" (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 [2019-09-16 17:04:23,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:04:23,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:04:23,497 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2019-09-16 17:04:23,497 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:04:23,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:04:23,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:04:23,497 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2019-09-16 17:04:23,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:04:23,497 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:04:23,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:04:23,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:04:23,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:04:23,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:04:23,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:04:23,818 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:04:23,818 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-16 17:04:23,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:04:23 BoogieIcfgContainer [2019-09-16 17:04:23,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:04:23,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:04:23,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:04:23,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:04:23,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:04:22" (1/3) ... [2019-09-16 17:04:23,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10377e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:04:23, skipping insertion in model container [2019-09-16 17:04:23,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:23" (2/3) ... [2019-09-16 17:04:23,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10377e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:04:23, skipping insertion in model container [2019-09-16 17:04:23,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:04:23" (3/3) ... [2019-09-16 17:04:23,828 INFO L109 eAbstractionObserver]: Analyzing ICFG xor5.i [2019-09-16 17:04:23,852 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:04:23,858 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:04:23,874 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:04:23,895 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:04:23,896 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:04:23,896 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:04:23,896 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:04:23,896 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:04:23,896 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:04:23,896 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:04:23,896 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:04:23,909 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-09-16 17:04:23,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-09-16 17:04:23,918 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:04:23,919 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:04:23,921 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:04:23,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:23,926 INFO L82 PathProgramCache]: Analyzing trace with hash 911672298, now seen corresponding path program 1 times [2019-09-16 17:04:23,928 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:04:23,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:23,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:23,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:23,980 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:04:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-16 17:04:24,101 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:04:24,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:04:24,102 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:04:24,107 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:04:24,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:04:24,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:04:24,124 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-09-16 17:04:24,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:04:24,139 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-09-16 17:04:24,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:04:24,141 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2019-09-16 17:04:24,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:04:24,150 INFO L225 Difference]: With dead ends: 33 [2019-09-16 17:04:24,150 INFO L226 Difference]: Without dead ends: 27 [2019-09-16 17:04:24,152 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 [2019-09-16 17:04:24,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-09-16 17:04:24,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-09-16 17:04:24,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-16 17:04:24,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-09-16 17:04:24,192 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2019-09-16 17:04:24,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:04:24,192 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-09-16 17:04:24,192 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:04:24,193 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-09-16 17:04:24,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-09-16 17:04:24,194 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:04:24,195 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:04:24,195 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:04:24,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:24,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1776857700, now seen corresponding path program 1 times [2019-09-16 17:04:24,196 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:04:24,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:24,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:24,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:24,199 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:04:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:24,356 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-16 17:04:24,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:04:24,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:04:24,359 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:04:24,361 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:04:24,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:04:24,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:04:24,362 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 3 states. [2019-09-16 17:04:24,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:04:24,422 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2019-09-16 17:04:24,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:04:24,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-09-16 17:04:24,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:04:24,427 INFO L225 Difference]: With dead ends: 29 [2019-09-16 17:04:24,427 INFO L226 Difference]: Without dead ends: 29 [2019-09-16 17:04:24,428 INFO L636 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 [2019-09-16 17:04:24,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-16 17:04:24,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-09-16 17:04:24,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-09-16 17:04:24,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-09-16 17:04:24,436 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 33 [2019-09-16 17:04:24,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:04:24,436 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-09-16 17:04:24,437 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:04:24,437 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-09-16 17:04:24,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-09-16 17:04:24,439 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:04:24,439 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:04:24,440 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:04:24,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:24,441 INFO L82 PathProgramCache]: Analyzing trace with hash -725304090, now seen corresponding path program 1 times [2019-09-16 17:04:24,441 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:04:24,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:24,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:24,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:24,444 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:04:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:24,562 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-16 17:04:24,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:04:24,563 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:04:24,564 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 36 with the following transitions: [2019-09-16 17:04:24,567 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [19], [20], [21], [24], [30], [32], [34], [39], [41], [47], [55], [57], [60], [61], [72], [73], [74], [76], [77], [78], [79], [80], [81] [2019-09-16 17:04:24,637 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:04:24,638 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:04:24,706 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:04:24,707 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 31 variables. [2019-09-16 17:04:24,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:24,710 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:04:24,752 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-09-16 17:04:24,752 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:04:24,763 INFO L420 sIntCurrentIteration]: We unified 34 AI predicates to 34 [2019-09-16 17:04:24,764 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:04:24,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:04:24,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-09-16 17:04:24,766 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:04:24,767 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:04:24,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:04:24,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:04:24,769 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 3 states. [2019-09-16 17:04:24,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:04:24,776 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-09-16 17:04:24,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:04:24,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2019-09-16 17:04:24,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:04:24,777 INFO L225 Difference]: With dead ends: 7 [2019-09-16 17:04:24,777 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:04:24,778 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:04:24,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:04:24,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:04:24,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:04:24,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:04:24,779 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2019-09-16 17:04:24,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:04:24,780 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:04:24,780 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:04:24,780 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:04:24,780 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:04:24,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:04:24 BoogieIcfgContainer [2019-09-16 17:04:24,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:04:24,788 INFO L168 Benchmark]: Toolchain (without parser) took 1771.91 ms. Allocated memory was 131.6 MB in the beginning and 199.2 MB in the end (delta: 67.6 MB). Free memory was 87.4 MB in the beginning and 107.3 MB in the end (delta: -19.9 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:04:24,789 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 131.6 MB. Free memory was 105.7 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:04:24,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.78 ms. Allocated memory is still 131.6 MB. Free memory was 87.2 MB in the beginning and 76.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2019-09-16 17:04:24,791 INFO L168 Benchmark]: Boogie Preprocessor took 130.59 ms. Allocated memory was 131.6 MB in the beginning and 199.2 MB in the end (delta: 67.6 MB). Free memory was 76.6 MB in the beginning and 174.8 MB in the end (delta: -98.2 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2019-09-16 17:04:24,792 INFO L168 Benchmark]: RCFGBuilder took 384.90 ms. Allocated memory is still 199.2 MB. Free memory was 174.8 MB in the beginning and 158.2 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:04:24,793 INFO L168 Benchmark]: TraceAbstraction took 964.06 ms. Allocated memory is still 199.2 MB. Free memory was 157.5 MB in the beginning and 107.3 MB in the end (delta: 50.2 MB). Peak memory consumption was 50.2 MB. Max. memory is 7.1 GB. [2019-09-16 17:04:24,797 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 131.6 MB. Free memory was 105.7 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 287.78 ms. Allocated memory is still 131.6 MB. Free memory was 87.2 MB in the beginning and 76.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.59 ms. Allocated memory was 131.6 MB in the beginning and 199.2 MB in the end (delta: 67.6 MB). Free memory was 76.6 MB in the beginning and 174.8 MB in the end (delta: -98.2 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 384.90 ms. Allocated memory is still 199.2 MB. Free memory was 174.8 MB in the beginning and 158.2 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 964.06 ms. Allocated memory is still 199.2 MB. Free memory was 157.5 MB in the beginning and 107.3 MB in the end (delta: 50.2 MB). Peak memory consumption was 50.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: 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, 3 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 73 SDtfs, 4 SDslu, 21 SDs, 0 SdLazy, 12 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 37 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, 0.9607843137254901 AbsIntWeakeningRatio, 1.411764705882353 AbsIntAvgWeakeningVarsNumRemoved, 0.47058823529411764 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3940 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 38/46 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...