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/reducercommutativity/avg20-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:59:30,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:59:30,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:59:30,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-03 02:59:30,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-03 02:59:30,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-03 02:59:30,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-03 02:59:30,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-03 02:59:30,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-03 02:59:30,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-03 02:59:30,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-03 02:59:30,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-03 02:59:30,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:59:30,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:59:30,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:59:30,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:59:30,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:59:30,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:59:30,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:59:30,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:59:30,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:59:30,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:59:30,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:59:30,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:59:30,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-03 02:59:30,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:59:30,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:59:30,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:59:30,978 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 [2019-10-03 02:59:30,993 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:59:30,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:59:30,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:59:30,994 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:59:30,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:59:30,995 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:59:30,995 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:59:30,995 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:59:30,996 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:59:30,996 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:59:30,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:59:30,997 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:59:30,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:59:30,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:59:30,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:59:30,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:59:30,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:59:30,998 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:59:30,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:59:30,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:59:30,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:59:30,999 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:59:30,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:59:30,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:59:31,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:59:31,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:59:31,000 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:59:31,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:59:31,000 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:59:31,001 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:59:31,028 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:59:31,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:59:31,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:59:31,046 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:59:31,046 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:59:31,047 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg20-2.i [2019-10-03 02:59:31,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a7444bd3/4e1d544364744c779dcc5ecdde9e007b/FLAGe1a0e0bc7 [2019-10-03 02:59:31,588 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:59:31,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/avg20-2.i [2019-10-03 02:59:31,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a7444bd3/4e1d544364744c779dcc5ecdde9e007b/FLAGe1a0e0bc7 [2019-10-03 02:59:31,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a7444bd3/4e1d544364744c779dcc5ecdde9e007b [2019-10-03 02:59:31,998 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:59:32,000 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:59:32,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:59:32,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:59:32,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:59:32,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:59:31" (1/1) ... [2019-10-03 02:59:32,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a2e2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:32, skipping insertion in model container [2019-10-03 02:59:32,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:59:31" (1/1) ... [2019-10-03 02:59:32,019 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:59:32,038 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:59:32,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:59:32,240 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:59:32,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:59:32,364 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:59:32,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:32 WrapperNode [2019-10-03 02:59:32,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:59:32,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:59:32,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:59:32,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:59:32,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:32" (1/1) ... [2019-10-03 02:59:32,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:32" (1/1) ... [2019-10-03 02:59:32,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:32" (1/1) ... [2019-10-03 02:59:32,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:32" (1/1) ... [2019-10-03 02:59:32,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:32" (1/1) ... [2019-10-03 02:59:32,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:32" (1/1) ... [2019-10-03 02:59:32,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:32" (1/1) ... [2019-10-03 02:59:32,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:59:32,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:59:32,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:59:32,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:59:32,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:32" (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 [2019-10-03 02:59:32,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:59:32,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:59:32,478 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2019-10-03 02:59:32,479 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:59:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:59:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-03 02:59:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2019-10-03 02:59:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:59:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:59:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 02:59:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:59:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:59:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:59:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:59:32,801 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:59:32,801 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-03 02:59:32,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:59:32 BoogieIcfgContainer [2019-10-03 02:59:32,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:59:32,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:59:32,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:59:32,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:59:32,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:59:31" (1/3) ... [2019-10-03 02:59:32,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415c013b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:59:32, skipping insertion in model container [2019-10-03 02:59:32,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:59:32" (2/3) ... [2019-10-03 02:59:32,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@415c013b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:59:32, skipping insertion in model container [2019-10-03 02:59:32,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:59:32" (3/3) ... [2019-10-03 02:59:32,812 INFO L109 eAbstractionObserver]: Analyzing ICFG avg20-2.i [2019-10-03 02:59:32,820 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:59:32,827 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:59:32,845 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:59:32,876 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:59:32,876 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:59:32,876 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:59:32,876 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:59:32,876 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:59:32,876 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:59:32,876 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:59:32,877 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:59:32,889 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-10-03 02:59:32,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-03 02:59:32,898 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:32,899 INFO L411 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] [2019-10-03 02:59:32,901 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:32,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:32,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2019-10-03 02:59:32,907 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:32,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:32,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:32,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:32,966 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:33,084 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-03 02:59:33,087 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:59:33,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-03 02:59:33,087 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:33,093 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:59:33,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:59:33,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:59:33,112 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2019-10-03 02:59:33,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:33,134 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-10-03 02:59:33,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:59:33,136 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 32 [2019-10-03 02:59:33,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:33,145 INFO L225 Difference]: With dead ends: 31 [2019-10-03 02:59:33,146 INFO L226 Difference]: Without dead ends: 26 [2019-10-03 02:59:33,148 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 [2019-10-03 02:59:33,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-03 02:59:33,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-10-03 02:59:33,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-03 02:59:33,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-10-03 02:59:33,193 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2019-10-03 02:59:33,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:33,194 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-10-03 02:59:33,194 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:59:33,194 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-10-03 02:59:33,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-03 02:59:33,196 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:33,197 INFO L411 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] [2019-10-03 02:59:33,197 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:33,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:33,198 INFO L82 PathProgramCache]: Analyzing trace with hash 721846027, now seen corresponding path program 1 times [2019-10-03 02:59:33,198 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:33,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:33,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:33,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:33,200 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:33,303 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-03 02:59:33,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:59:33,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 02:59:33,305 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:33,306 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 02:59:33,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 02:59:33,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:59:33,308 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 3 states. [2019-10-03 02:59:33,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:33,326 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2019-10-03 02:59:33,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 02:59:33,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2019-10-03 02:59:33,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:33,330 INFO L225 Difference]: With dead ends: 28 [2019-10-03 02:59:33,331 INFO L226 Difference]: Without dead ends: 28 [2019-10-03 02:59:33,332 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 [2019-10-03 02:59:33,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-03 02:59:33,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-10-03 02:59:33,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-03 02:59:33,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-10-03 02:59:33,338 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2019-10-03 02:59:33,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:33,339 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-10-03 02:59:33,339 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 02:59:33,339 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-10-03 02:59:33,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-03 02:59:33,341 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:59:33,341 INFO L411 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] [2019-10-03 02:59:33,341 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:59:33,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:33,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1487444845, now seen corresponding path program 1 times [2019-10-03 02:59:33,342 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:59:33,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:33,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:59:33,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:59:33,344 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:59:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:59:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-03 02:59:33,455 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:59:33,455 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 02:59:33,456 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 35 with the following transitions: [2019-10-03 02:59:33,458 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [8], [16], [17], [21], [27], [29], [31], [36], [38], [44], [52], [54], [57], [58], [65], [66], [67], [69], [70], [71], [72], [73], [74] [2019-10-03 02:59:33,503 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 02:59:33,503 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 02:59:33,562 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 02:59:33,564 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 28 variables. [2019-10-03 02:59:33,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:59:33,568 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 02:59:33,611 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-03 02:59:33,611 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 02:59:33,614 INFO L420 sIntCurrentIteration]: We unified 33 AI predicates to 33 [2019-10-03 02:59:33,614 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 02:59:33,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 02:59:33,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2019-10-03 02:59:33,616 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:59:33,616 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:59:33,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:59:33,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:59:33,617 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 2 states. [2019-10-03 02:59:33,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:59:33,618 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-03 02:59:33,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:59:33,618 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 34 [2019-10-03 02:59:33,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:59:33,619 INFO L225 Difference]: With dead ends: 6 [2019-10-03 02:59:33,619 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:59:33,620 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:59:33,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:59:33,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:59:33,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:59:33,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:59:33,621 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2019-10-03 02:59:33,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:59:33,621 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:59:33,621 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:59:33,621 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:59:33,622 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:59:33,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:59:33 BoogieIcfgContainer [2019-10-03 02:59:33,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:59:33,630 INFO L168 Benchmark]: Toolchain (without parser) took 1628.88 ms. Allocated memory was 130.0 MB in the beginning and 197.1 MB in the end (delta: 67.1 MB). Free memory was 85.5 MB in the beginning and 110.5 MB in the end (delta: -25.0 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. [2019-10-03 02:59:33,631 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 130.0 MB. Free memory was 104.3 MB in the beginning and 104.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:59:33,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.10 ms. Allocated memory was 130.0 MB in the beginning and 197.1 MB in the end (delta: 67.1 MB). Free memory was 85.3 MB in the beginning and 173.4 MB in the end (delta: -88.1 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2019-10-03 02:59:33,633 INFO L168 Benchmark]: Boogie Preprocessor took 57.34 ms. Allocated memory is still 197.1 MB. Free memory was 173.4 MB in the beginning and 171.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-10-03 02:59:33,634 INFO L168 Benchmark]: RCFGBuilder took 381.76 ms. Allocated memory is still 197.1 MB. Free memory was 171.1 MB in the beginning and 155.1 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-10-03 02:59:33,635 INFO L168 Benchmark]: TraceAbstraction took 821.30 ms. Allocated memory is still 197.1 MB. Free memory was 155.1 MB in the beginning and 110.5 MB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 7.1 GB. [2019-10-03 02:59:33,639 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 130.0 MB. Free memory was 104.3 MB in the beginning and 104.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 364.10 ms. Allocated memory was 130.0 MB in the beginning and 197.1 MB in the end (delta: 67.1 MB). Free memory was 85.3 MB in the beginning and 173.4 MB in the end (delta: -88.1 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.34 ms. Allocated memory is still 197.1 MB. Free memory was 173.4 MB in the beginning and 171.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.76 ms. Allocated memory is still 197.1 MB. Free memory was 171.1 MB in the beginning and 155.1 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 821.30 ms. Allocated memory is still 197.1 MB. Free memory was 155.1 MB in the beginning and 110.5 MB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: 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, 31 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 1 SDslu, 26 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 0.946969696969697 AbsIntWeakeningRatio, 1.303030303030303 AbsIntAvgWeakeningVarsNumRemoved, 0.18181818181818182 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 3139 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...