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/loop-invgen/id_build.i.p+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:03:22,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:03:22,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:03:22,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-16 17:03:22,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:03:22,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:03:22,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:03:22,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:03:22,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:03:22,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:03:22,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:03:22,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:03:22,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:03:22,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:03:22,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:03:22,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:03:22,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 17:03:23,000 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 17:03:23,030 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:03:23,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:03:23,031 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:03:23,031 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:03:23,032 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:03:23,033 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:03:23,033 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:03:23,033 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:03:23,033 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:03:23,034 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:03:23,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:03:23,035 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:03:23,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:03:23,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:03:23,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:03:23,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:03:23,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:03:23,037 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:03:23,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:03:23,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:03:23,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:03:23,038 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:03:23,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:03:23,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:03:23,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:03:23,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:03:23,039 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:03:23,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:03:23,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:03:23,040 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:03:23,087 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:03:23,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:03:23,104 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:03:23,105 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:03:23,106 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:03:23,106 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.p+nlh-reducer.c [2019-09-16 17:03:23,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d3a116e8/7288ca84490c45219f6b73b06c92220c/FLAGa00613fe0 [2019-09-16 17:03:23,764 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:03:23,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.p+nlh-reducer.c [2019-09-16 17:03:23,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d3a116e8/7288ca84490c45219f6b73b06c92220c/FLAGa00613fe0 [2019-09-16 17:03:24,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d3a116e8/7288ca84490c45219f6b73b06c92220c [2019-09-16 17:03:24,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:03:24,072 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:03:24,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:03:24,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:03:24,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:03:24,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:03:24" (1/1) ... [2019-09-16 17:03:24,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f808fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:24, skipping insertion in model container [2019-09-16 17:03:24,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:03:24" (1/1) ... [2019-09-16 17:03:24,089 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:03:24,175 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:03:24,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:03:24,839 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:03:25,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:03:25,089 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:03:25,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:25 WrapperNode [2019-09-16 17:03:25,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:03:25,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:03:25,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:03:25,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:03:25,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:25" (1/1) ... [2019-09-16 17:03:25,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:25" (1/1) ... [2019-09-16 17:03:25,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:25" (1/1) ... [2019-09-16 17:03:25,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:25" (1/1) ... [2019-09-16 17:03:25,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:25" (1/1) ... [2019-09-16 17:03:25,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:25" (1/1) ... [2019-09-16 17:03:25,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:25" (1/1) ... [2019-09-16 17:03:25,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:03:25,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:03:25,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:03:25,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:03:25,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:25" (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 17:03:25,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:03:25,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:03:25,335 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:03:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:03:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-16 17:03:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 17:03:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:03:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:03:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:03:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:03:26,741 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:03:26,741 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-16 17:03:26,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:03:26 BoogieIcfgContainer [2019-09-16 17:03:26,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:03:26,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:03:26,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:03:26,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:03:26,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:03:24" (1/3) ... [2019-09-16 17:03:26,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ced1c9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:03:26, skipping insertion in model container [2019-09-16 17:03:26,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:25" (2/3) ... [2019-09-16 17:03:26,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ced1c9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:03:26, skipping insertion in model container [2019-09-16 17:03:26,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:03:26" (3/3) ... [2019-09-16 17:03:26,756 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i.p+nlh-reducer.c [2019-09-16 17:03:26,767 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:03:26,794 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-09-16 17:03:26,813 INFO L252 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-09-16 17:03:26,846 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:03:26,847 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:03:26,847 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:03:26,848 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:03:26,848 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:03:26,848 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:03:26,848 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:03:26,849 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:03:26,889 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states. [2019-09-16 17:03:26,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-09-16 17:03:26,917 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:03:26,918 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:03:26,920 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:03:26,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:03:26,927 INFO L82 PathProgramCache]: Analyzing trace with hash 660555009, now seen corresponding path program 1 times [2019-09-16 17:03:26,930 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:03:26,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:26,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:03:26,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:26,994 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:03:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:03:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:03:27,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:03:27,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:03:27,580 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:03:27,587 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:03:27,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:03:27,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:03:27,628 INFO L87 Difference]: Start difference. First operand 256 states. Second operand 5 states. [2019-09-16 17:03:28,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:03:28,268 INFO L93 Difference]: Finished difference Result 265 states and 499 transitions. [2019-09-16 17:03:28,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-16 17:03:28,270 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2019-09-16 17:03:28,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:03:28,300 INFO L225 Difference]: With dead ends: 265 [2019-09-16 17:03:28,300 INFO L226 Difference]: Without dead ends: 257 [2019-09-16 17:03:28,304 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:03:28,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2019-09-16 17:03:28,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 250. [2019-09-16 17:03:28,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2019-09-16 17:03:28,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 287 transitions. [2019-09-16 17:03:28,393 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 287 transitions. Word has length 141 [2019-09-16 17:03:28,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:03:28,396 INFO L475 AbstractCegarLoop]: Abstraction has 250 states and 287 transitions. [2019-09-16 17:03:28,396 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:03:28,397 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 287 transitions. [2019-09-16 17:03:28,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-09-16 17:03:28,409 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:03:28,410 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:03:28,410 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:03:28,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:03:28,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1463397132, now seen corresponding path program 1 times [2019-09-16 17:03:28,411 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:03:28,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:28,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:03:28,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:28,416 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:03:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:03:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:03:28,682 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:03:28,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:03:28,682 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:03:28,684 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:03:28,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:03:28,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:03:28,685 INFO L87 Difference]: Start difference. First operand 250 states and 287 transitions. Second operand 5 states. [2019-09-16 17:03:29,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:03:29,319 INFO L93 Difference]: Finished difference Result 260 states and 300 transitions. [2019-09-16 17:03:29,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:03:29,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2019-09-16 17:03:29,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:03:29,321 INFO L225 Difference]: With dead ends: 260 [2019-09-16 17:03:29,321 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:03:29,322 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:03:29,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:03:29,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:03:29,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:03:29,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:03:29,323 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2019-09-16 17:03:29,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:03:29,323 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:03:29,323 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:03:29,323 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:03:29,324 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:03:29,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:03:29 BoogieIcfgContainer [2019-09-16 17:03:29,329 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:03:29,332 INFO L168 Benchmark]: Toolchain (without parser) took 5258.75 ms. Allocated memory was 141.0 MB in the beginning and 258.5 MB in the end (delta: 117.4 MB). Free memory was 85.9 MB in the beginning and 181.9 MB in the end (delta: -96.0 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:29,333 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 105.8 MB in the beginning and 105.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:03:29,334 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1016.69 ms. Allocated memory was 141.0 MB in the beginning and 200.3 MB in the end (delta: 59.2 MB). Free memory was 85.7 MB in the beginning and 156.4 MB in the end (delta: -70.7 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:29,335 INFO L168 Benchmark]: Boogie Preprocessor took 171.14 ms. Allocated memory is still 200.3 MB. Free memory was 156.4 MB in the beginning and 152.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:29,336 INFO L168 Benchmark]: RCFGBuilder took 1481.43 ms. Allocated memory was 200.3 MB in the beginning and 227.5 MB in the end (delta: 27.3 MB). Free memory was 152.0 MB in the beginning and 132.8 MB in the end (delta: 19.2 MB). Peak memory consumption was 79.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:29,337 INFO L168 Benchmark]: TraceAbstraction took 2584.53 ms. Allocated memory was 227.5 MB in the beginning and 258.5 MB in the end (delta: 30.9 MB). Free memory was 132.8 MB in the beginning and 181.9 MB in the end (delta: -49.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-16 17:03:29,342 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 141.0 MB. Free memory was 105.8 MB in the beginning and 105.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1016.69 ms. Allocated memory was 141.0 MB in the beginning and 200.3 MB in the end (delta: 59.2 MB). Free memory was 85.7 MB in the beginning and 156.4 MB in the end (delta: -70.7 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 171.14 ms. Allocated memory is still 200.3 MB. Free memory was 156.4 MB in the beginning and 152.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1481.43 ms. Allocated memory was 200.3 MB in the beginning and 227.5 MB in the end (delta: 27.3 MB). Free memory was 152.0 MB in the beginning and 132.8 MB in the end (delta: 19.2 MB). Peak memory consumption was 79.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2584.53 ms. Allocated memory was 227.5 MB in the beginning and 258.5 MB in the end (delta: 30.9 MB). Free memory was 132.8 MB in the beginning and 181.9 MB in the end (delta: -49.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1758]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1775]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 256 locations, 2 error locations. SAFE Result, 2.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 451 SDtfs, 872 SDslu, 786 SDs, 0 SdLazy, 942 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=256occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 282 ConstructedInterpolants, 0 QuantifiedInterpolants, 86198 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...