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-industry-pattern/aiob_4.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:03:43,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:03:43,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:03:43,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-16 17:03:43,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:03:43,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:03:43,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:03:43,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:03:43,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:03:43,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:03:43,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:03:43,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:03:43,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:03:43,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:03:43,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:03:43,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:03:43,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 17:03:43,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:03:43,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:03:43,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:03:43,961 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 17:03:43,987 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:03:43,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:03:43,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:03:43,990 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:03:43,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:03:43,991 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:03:43,991 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:03:43,991 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:03:43,992 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:03:43,992 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:03:43,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:03:43,993 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:03:43,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:03:43,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:03:43,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:03:43,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:03:43,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:03:43,995 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:03:43,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:03:43,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:03:43,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:03:43,996 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:03:43,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:03:43,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:03:43,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:03:43,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:03:43,997 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:03:43,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:03:43,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:03:43,998 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:03:44,057 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:03:44,070 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:03:44,073 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:03:44,075 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:03:44,076 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:03:44,076 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2019-09-16 17:03:44,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/523476e76/83b12f152fab4da6b2e55694fbc1e50e/FLAG9ec3832c9 [2019-09-16 17:03:44,703 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:03:44,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2019-09-16 17:03:44,722 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/523476e76/83b12f152fab4da6b2e55694fbc1e50e/FLAG9ec3832c9 [2019-09-16 17:03:44,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/523476e76/83b12f152fab4da6b2e55694fbc1e50e [2019-09-16 17:03:45,007 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:03:45,008 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:03:45,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:03:45,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:03:45,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:03:45,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:03:44" (1/1) ... [2019-09-16 17:03:45,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a69addc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:45, skipping insertion in model container [2019-09-16 17:03:45,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:03:44" (1/1) ... [2019-09-16 17:03:45,024 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:03:45,077 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:03:45,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:03:45,506 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:03:45,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:03:45,651 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:03:45,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:45 WrapperNode [2019-09-16 17:03:45,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:03:45,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:03:45,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:03:45,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:03:45,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:45" (1/1) ... [2019-09-16 17:03:45,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:45" (1/1) ... [2019-09-16 17:03:45,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:45" (1/1) ... [2019-09-16 17:03:45,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:45" (1/1) ... [2019-09-16 17:03:45,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:45" (1/1) ... [2019-09-16 17:03:45,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:45" (1/1) ... [2019-09-16 17:03:45,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:45" (1/1) ... [2019-09-16 17:03:45,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:03:45,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:03:45,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:03:45,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:03:45,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:45" (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 17:03:45,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:03:45,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:03:45,825 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:03:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:03:45,826 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-09-16 17:03:45,826 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-09-16 17:03:45,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:03:45,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 17:03:45,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:03:45,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:03:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:03:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:03:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:03:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:03:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:03:45,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:03:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:03:46,928 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:03:46,929 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-16 17:03:46,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:03:46 BoogieIcfgContainer [2019-09-16 17:03:46,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:03:46,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:03:46,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:03:46,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:03:46,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:03:44" (1/3) ... [2019-09-16 17:03:46,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d56d6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:03:46, skipping insertion in model container [2019-09-16 17:03:46,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:45" (2/3) ... [2019-09-16 17:03:46,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d56d6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:03:46, skipping insertion in model container [2019-09-16 17:03:46,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:03:46" (3/3) ... [2019-09-16 17:03:46,941 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2019-09-16 17:03:46,952 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:03:46,961 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:03:46,978 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:03:47,001 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:03:47,002 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:03:47,002 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:03:47,002 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:03:47,002 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:03:47,002 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:03:47,003 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:03:47,003 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:03:47,019 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-09-16 17:03:47,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-09-16 17:03:47,030 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:03:47,031 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] [2019-09-16 17:03:47,033 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:03:47,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:03:47,039 INFO L82 PathProgramCache]: Analyzing trace with hash 377540282, now seen corresponding path program 1 times [2019-09-16 17:03:47,041 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:03:47,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:47,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:03:47,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:47,095 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:03:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:03:48,190 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 17:03:48,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:03:48,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-09-16 17:03:48,194 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:03:48,201 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-16 17:03:48,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-16 17:03:48,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2019-09-16 17:03:48,222 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 19 states. [2019-09-16 17:03:49,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:03:49,459 INFO L93 Difference]: Finished difference Result 85 states and 107 transitions. [2019-09-16 17:03:49,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-16 17:03:49,461 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2019-09-16 17:03:49,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:03:49,473 INFO L225 Difference]: With dead ends: 85 [2019-09-16 17:03:49,473 INFO L226 Difference]: Without dead ends: 57 [2019-09-16 17:03:49,476 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2019-09-16 17:03:49,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-09-16 17:03:49,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2019-09-16 17:03:49,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-09-16 17:03:49,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2019-09-16 17:03:49,519 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 48 [2019-09-16 17:03:49,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:03:49,520 INFO L475 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2019-09-16 17:03:49,520 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-16 17:03:49,520 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2019-09-16 17:03:49,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-16 17:03:49,522 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:03:49,522 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:03:49,522 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:03:49,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:03:49,523 INFO L82 PathProgramCache]: Analyzing trace with hash -849330057, now seen corresponding path program 1 times [2019-09-16 17:03:49,523 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:03:49,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:49,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:03:49,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:49,526 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:03:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:03:50,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:03:50,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:03:50,065 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:03:50,066 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 54 with the following transitions: [2019-09-16 17:03:50,068 INFO L207 CegarAbsIntRunner]: [0], [4], [7], [10], [14], [17], [20], [23], [27], [30], [33], [36], [40], [43], [46], [49], [53], [56], [59], [62], [66], [69], [72], [75], [79], [82], [85], [88], [92], [95], [98], [101], [105], [108], [111], [114], [118], [121], [123], [126], [129], [133], [136], [139], [142], [143], [175], [176], [180], [181], [182] [2019-09-16 17:03:50,114 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:03:50,115 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:03:50,192 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:03:50,194 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 47 root evaluator evaluations with a maximum evaluation depth of 0. Performed 47 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 76 variables. [2019-09-16 17:03:50,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:03:50,198 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:03:50,244 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:03:50,244 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:03:50,251 INFO L420 sIntCurrentIteration]: We unified 52 AI predicates to 52 [2019-09-16 17:03:50,252 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:03:50,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:03:50,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [20] total 20 [2019-09-16 17:03:50,253 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:03:50,256 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:03:50,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:03:50,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:03:50,257 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 2 states. [2019-09-16 17:03:50,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:03:50,258 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:03:50,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:03:50,258 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 53 [2019-09-16 17:03:50,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:03:50,259 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:03:50,260 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:03:50,261 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:03:50,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:03:50,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:03:50,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:03:50,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:03:50,264 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2019-09-16 17:03:50,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:03:50,265 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:03:50,265 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:03:50,265 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:03:50,265 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:03:50,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:03:50 BoogieIcfgContainer [2019-09-16 17:03:50,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:03:50,277 INFO L168 Benchmark]: Toolchain (without parser) took 5266.49 ms. Allocated memory was 138.9 MB in the beginning and 265.3 MB in the end (delta: 126.4 MB). Free memory was 86.1 MB in the beginning and 73.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 139.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:50,278 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.9 MB. Free memory was 105.0 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:03:50,280 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.49 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 85.9 MB in the beginning and 165.0 MB in the end (delta: -79.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:50,282 INFO L168 Benchmark]: Boogie Preprocessor took 95.78 ms. Allocated memory is still 198.7 MB. Free memory was 165.0 MB in the beginning and 160.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:50,283 INFO L168 Benchmark]: RCFGBuilder took 1183.54 ms. Allocated memory was 198.7 MB in the beginning and 221.8 MB in the end (delta: 23.1 MB). Free memory was 160.0 MB in the beginning and 177.0 MB in the end (delta: -17.0 MB). Peak memory consumption was 91.9 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:50,305 INFO L168 Benchmark]: TraceAbstraction took 3340.42 ms. Allocated memory was 221.8 MB in the beginning and 265.3 MB in the end (delta: 43.5 MB). Free memory was 177.0 MB in the beginning and 73.0 MB in the end (delta: 104.0 MB). Peak memory consumption was 147.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:50,318 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 138.9 MB. Free memory was 105.0 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 642.49 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 85.9 MB in the beginning and 165.0 MB in the end (delta: -79.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.78 ms. Allocated memory is still 198.7 MB. Free memory was 165.0 MB in the beginning and 160.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1183.54 ms. Allocated memory was 198.7 MB in the beginning and 221.8 MB in the end (delta: 23.1 MB). Free memory was 160.0 MB in the beginning and 177.0 MB in the end (delta: -17.0 MB). Peak memory consumption was 91.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3340.42 ms. Allocated memory was 221.8 MB in the beginning and 265.3 MB in the end (delta: 43.5 MB). Free memory was 177.0 MB in the beginning and 73.0 MB in the end (delta: 104.0 MB). Peak memory consumption was 147.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 465]: 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 3 procedures, 55 locations, 1 error locations. SAFE Result, 3.2s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 56 SDtfs, 93 SDslu, 737 SDs, 0 SdLazy, 743 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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, 1.0 AbsIntWeakeningRatio, 6.211538461538462 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 34886 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...