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/zero_sum_const5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:29:37,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:29:37,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:29:37,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:29:37,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:29:37,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:29:37,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:29:37,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:29:37,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:29:37,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:29:37,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:29:37,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:29:37,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:29:37,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:29:37,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:29:37,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:29:37,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:29:37,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:29:37,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:29:37,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:29:37,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:29:37,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:29:37,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:29:37,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:29:37,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 16:29:37,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 16:29:37,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 16:29:37,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 16:29:37,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 16:29:37,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 16:29:37,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:29:37,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:29:37,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:29:37,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:29:37,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:29:37,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:29:37,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:29:37,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:29:37,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:29:37,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:29:37,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:29:37,940 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 16:29:37,955 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:29:37,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:29:37,956 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:29:37,956 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:29:37,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:29:37,957 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:29:37,957 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:29:37,957 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:29:37,957 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:29:37,958 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:29:37,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:29:37,958 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:29:37,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:29:37,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:29:37,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:29:37,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:29:37,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:29:37,960 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:29:37,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:29:37,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:29:37,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:29:37,960 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:29:37,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:29:37,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:29:37,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:29:37,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:29:37,961 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:29:37,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:29:37,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:29:37,962 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:29:38,002 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:29:38,014 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:29:38,017 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:29:38,019 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:29:38,019 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:29:38,020 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const5.c [2019-10-02 16:29:38,082 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4efc4e56/5730d96a448348199feeffa667440cde/FLAG670aecc01 [2019-10-02 16:29:38,589 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:29:38,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const5.c [2019-10-02 16:29:38,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4efc4e56/5730d96a448348199feeffa667440cde/FLAG670aecc01 [2019-10-02 16:29:38,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4efc4e56/5730d96a448348199feeffa667440cde [2019-10-02 16:29:38,930 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:29:38,932 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:29:38,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:38,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:29:38,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:29:38,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:38" (1/1) ... [2019-10-02 16:29:38,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b1910d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:38, skipping insertion in model container [2019-10-02 16:29:38,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:38" (1/1) ... [2019-10-02 16:29:38,948 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:29:38,966 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:29:39,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:39,185 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:29:39,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:39,226 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:29:39,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39 WrapperNode [2019-10-02 16:29:39,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:39,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:29:39,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:29:39,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:29:39,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39" (1/1) ... [2019-10-02 16:29:39,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39" (1/1) ... [2019-10-02 16:29:39,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39" (1/1) ... [2019-10-02 16:29:39,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39" (1/1) ... [2019-10-02 16:29:39,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39" (1/1) ... [2019-10-02 16:29:39,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39" (1/1) ... [2019-10-02 16:29:39,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39" (1/1) ... [2019-10-02 16:29:39,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:29:39,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:29:39,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:29:39,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:29:39,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39" (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 16:29:39,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:29:39,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:29:39,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:29:39,440 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:29:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:29:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 16:29:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:29:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-02 16:29:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-02 16:29:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:29:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-02 16:29:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:29:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:29:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:29:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:29:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:29:39,838 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:29:39,839 INFO L283 CfgBuilder]: Removed 11 assume(true) statements. [2019-10-02 16:29:39,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:39 BoogieIcfgContainer [2019-10-02 16:29:39,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:29:39,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:29:39,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:29:39,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:29:39,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:29:38" (1/3) ... [2019-10-02 16:29:39,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5074001a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:39, skipping insertion in model container [2019-10-02 16:29:39,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:39" (2/3) ... [2019-10-02 16:29:39,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5074001a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:39, skipping insertion in model container [2019-10-02 16:29:39,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:39" (3/3) ... [2019-10-02 16:29:39,848 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum_const5.c [2019-10-02 16:29:39,858 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:29:39,866 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:29:39,883 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:29:39,914 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:29:39,914 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:29:39,914 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:29:39,914 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:29:39,914 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:29:39,915 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:29:39,915 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:29:39,915 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:29:39,937 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2019-10-02 16:29:39,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-02 16:29:39,948 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:39,949 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, 1, 1, 1, 1, 1] [2019-10-02 16:29:39,951 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:39,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:39,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1272746570, now seen corresponding path program 1 times [2019-10-02 16:29:39,957 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:40,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:40,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:40,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:40,009 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:40,106 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 16:29:40,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:40,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:29:40,109 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:40,114 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:40,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:40,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:40,132 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2019-10-02 16:29:40,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:40,149 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2019-10-02 16:29:40,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:40,151 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 32 [2019-10-02 16:29:40,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:40,161 INFO L225 Difference]: With dead ends: 51 [2019-10-02 16:29:40,161 INFO L226 Difference]: Without dead ends: 44 [2019-10-02 16:29:40,163 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 16:29:40,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-02 16:29:40,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-10-02 16:29:40,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-02 16:29:40,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2019-10-02 16:29:40,204 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 32 [2019-10-02 16:29:40,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:40,205 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2019-10-02 16:29:40,205 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:40,205 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2019-10-02 16:29:40,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-02 16:29:40,207 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:40,207 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, 1, 1, 1, 1, 1] [2019-10-02 16:29:40,207 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:40,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:40,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1923539238, now seen corresponding path program 1 times [2019-10-02 16:29:40,208 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:40,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:40,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:40,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:40,211 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:40,351 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 16:29:40,351 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:40,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 16:29:40,352 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:40,354 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 16:29:40,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 16:29:40,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 16:29:40,355 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand 5 states. [2019-10-02 16:29:40,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:40,474 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2019-10-02 16:29:40,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 16:29:40,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-10-02 16:29:40,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:40,477 INFO L225 Difference]: With dead ends: 66 [2019-10-02 16:29:40,477 INFO L226 Difference]: Without dead ends: 63 [2019-10-02 16:29:40,478 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-02 16:29:40,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-02 16:29:40,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-10-02 16:29:40,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-10-02 16:29:40,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2019-10-02 16:29:40,488 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 32 [2019-10-02 16:29:40,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:40,489 INFO L475 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2019-10-02 16:29:40,489 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 16:29:40,489 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2019-10-02 16:29:40,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-02 16:29:40,491 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:40,491 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:40,492 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:40,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:40,492 INFO L82 PathProgramCache]: Analyzing trace with hash -772301532, now seen corresponding path program 1 times [2019-10-02 16:29:40,492 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:40,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:40,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:40,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:40,495 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:40,584 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 16:29:40,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:40,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:40,585 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:40,586 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:40,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:40,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:40,587 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand 3 states. [2019-10-02 16:29:40,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:40,716 INFO L93 Difference]: Finished difference Result 65 states and 84 transitions. [2019-10-02 16:29:40,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:40,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2019-10-02 16:29:40,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:40,720 INFO L225 Difference]: With dead ends: 65 [2019-10-02 16:29:40,721 INFO L226 Difference]: Without dead ends: 65 [2019-10-02 16:29:40,723 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 16:29:40,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-10-02 16:29:40,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2019-10-02 16:29:40,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-10-02 16:29:40,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2019-10-02 16:29:40,736 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 34 [2019-10-02 16:29:40,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:40,738 INFO L475 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2019-10-02 16:29:40,738 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:40,739 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2019-10-02 16:29:40,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-02 16:29:40,740 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:40,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:40,741 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:40,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:40,742 INFO L82 PathProgramCache]: Analyzing trace with hash -213249118, now seen corresponding path program 1 times [2019-10-02 16:29:40,742 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:40,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:40,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:40,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:40,747 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:40,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-02 16:29:40,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:40,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 16:29:40,856 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:40,856 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:29:40,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:29:40,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:29:40,857 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand 4 states. [2019-10-02 16:29:41,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:41,032 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2019-10-02 16:29:41,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 16:29:41,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2019-10-02 16:29:41,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:41,034 INFO L225 Difference]: With dead ends: 66 [2019-10-02 16:29:41,036 INFO L226 Difference]: Without dead ends: 66 [2019-10-02 16:29:41,036 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:29:41,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-10-02 16:29:41,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 55. [2019-10-02 16:29:41,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-10-02 16:29:41,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2019-10-02 16:29:41,047 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 36 [2019-10-02 16:29:41,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:41,047 INFO L475 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2019-10-02 16:29:41,047 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:29:41,048 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2019-10-02 16:29:41,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-02 16:29:41,052 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:41,053 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, 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 16:29:41,053 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:41,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:41,058 INFO L82 PathProgramCache]: Analyzing trace with hash 25817296, now seen corresponding path program 1 times [2019-10-02 16:29:41,058 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:41,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:41,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:41,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:41,062 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:41,166 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-02 16:29:41,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:29:41,167 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:29:41,168 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 55 with the following transitions: [2019-10-02 16:29:41,170 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [8], [14], [16], [18], [22], [28], [30], [32], [36], [42], [44], [46], [50], [56], [58], [60], [64], [70], [72], [74], [78], [84], [86], [88], [92], [98], [100], [102], [106], [112], [114], [116], [120], [126], [128], [130], [134], [140], [142], [144], [148], [154], [156], [158], [168], [171], [173], [179], [180], [181], [183] [2019-10-02 16:29:41,210 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:29:41,210 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:29:41,287 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:29:41,289 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 24 root evaluator evaluations with a maximum evaluation depth of 3. Performed 24 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 44 variables. [2019-10-02 16:29:41,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:41,293 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:29:41,338 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 77.5% of their original sizes. [2019-10-02 16:29:41,339 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:29:41,358 INFO L420 sIntCurrentIteration]: We unified 53 AI predicates to 53 [2019-10-02 16:29:41,358 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:29:41,359 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:29:41,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2019-10-02 16:29:41,359 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:41,360 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:29:41,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:29:41,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:29:41,360 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 4 states. [2019-10-02 16:29:41,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:41,362 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-10-02 16:29:41,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:41,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2019-10-02 16:29:41,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:41,363 INFO L225 Difference]: With dead ends: 7 [2019-10-02 16:29:41,363 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:29:41,364 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:29:41,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:29:41,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:29:41,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:29:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:29:41,365 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2019-10-02 16:29:41,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:41,365 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:29:41,365 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:29:41,365 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:29:41,365 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:29:41,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:29:41 BoogieIcfgContainer [2019-10-02 16:29:41,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:29:41,372 INFO L168 Benchmark]: Toolchain (without parser) took 2440.02 ms. Allocated memory was 137.4 MB in the beginning and 216.5 MB in the end (delta: 79.2 MB). Free memory was 83.8 MB in the beginning and 169.3 MB in the end (delta: -85.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-02 16:29:41,374 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 137.4 MB. Free memory was 102.2 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 16:29:41,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.74 ms. Allocated memory is still 137.4 MB. Free memory was 83.6 MB in the beginning and 72.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:41,375 INFO L168 Benchmark]: Boogie Preprocessor took 143.92 ms. Allocated memory was 137.4 MB in the beginning and 197.1 MB in the end (delta: 59.8 MB). Free memory was 72.1 MB in the beginning and 173.7 MB in the end (delta: -101.6 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:41,376 INFO L168 Benchmark]: RCFGBuilder took 464.24 ms. Allocated memory is still 197.1 MB. Free memory was 173.7 MB in the beginning and 151.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:41,377 INFO L168 Benchmark]: TraceAbstraction took 1529.22 ms. Allocated memory was 197.1 MB in the beginning and 216.5 MB in the end (delta: 19.4 MB). Free memory was 151.2 MB in the beginning and 169.3 MB in the end (delta: -18.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:41,381 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 137.4 MB. Free memory was 102.2 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 293.74 ms. Allocated memory is still 137.4 MB. Free memory was 83.6 MB in the beginning and 72.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.92 ms. Allocated memory was 137.4 MB in the beginning and 197.1 MB in the end (delta: 59.8 MB). Free memory was 72.1 MB in the beginning and 173.7 MB in the end (delta: -101.6 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 464.24 ms. Allocated memory is still 197.1 MB. Free memory was 173.7 MB in the beginning and 151.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1529.22 ms. Allocated memory was 197.1 MB in the beginning and 216.5 MB in the end (delta: 19.4 MB). Free memory was 151.2 MB in the beginning and 169.3 MB in the end (delta: -18.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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, 51 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 184 SDtfs, 73 SDslu, 138 SDs, 0 SdLazy, 162 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=3, 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, 0.9834905660377359 AbsIntWeakeningRatio, 0.8301886792452831 AbsIntAvgWeakeningVarsNumRemoved, 0.41509433962264153 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 188 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 183 ConstructedInterpolants, 0 QuantifiedInterpolants, 10131 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 13/14 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...