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/max40-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 05:31:25,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 05:31:25,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 05:31:25,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 05:31:25,605 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 [2019-09-09 05:31:25,619 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 05:31:25,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 05:31:25,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 05:31:25,620 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 05:31:25,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 05:31:25,621 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 05:31:25,621 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 05:31:25,621 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 05:31:25,621 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 05:31:25,622 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 05:31:25,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 05:31:25,623 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 05:31:25,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 05:31:25,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 05:31:25,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 05:31:25,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 05:31:25,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 05:31:25,624 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 05:31:25,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 05:31:25,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 05:31:25,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 05:31:25,625 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 05:31:25,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 05:31:25,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:31:25,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 05:31:25,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 05:31:25,626 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 05:31:25,626 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 05:31:25,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 05:31:25,626 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 05:31:25,654 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 05:31:25,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 05:31:25,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 05:31:25,677 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 05:31:25,679 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 05:31:25,680 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max40-1.i [2019-09-09 05:31:25,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8778cb4e3/375b13a1b96c497c8fdfd15afa8ff14a/FLAG0451f6ae0 [2019-09-09 05:31:26,210 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 05:31:26,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max40-1.i [2019-09-09 05:31:26,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8778cb4e3/375b13a1b96c497c8fdfd15afa8ff14a/FLAG0451f6ae0 [2019-09-09 05:31:26,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8778cb4e3/375b13a1b96c497c8fdfd15afa8ff14a [2019-09-09 05:31:26,616 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 05:31:26,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 05:31:26,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 05:31:26,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 05:31:26,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 05:31:26,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:31:26" (1/1) ... [2019-09-09 05:31:26,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f89b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:31:26, skipping insertion in model container [2019-09-09 05:31:26,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:31:26" (1/1) ... [2019-09-09 05:31:26,635 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 05:31:26,652 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 05:31:26,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:31:26,832 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 05:31:26,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:31:26,866 INFO L192 MainTranslator]: Completed translation [2019-09-09 05:31:26,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:31:26 WrapperNode [2019-09-09 05:31:26,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 05:31:26,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 05:31:26,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 05:31:26,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 05:31:26,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:31:26" (1/1) ... [2019-09-09 05:31:26,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:31:26" (1/1) ... [2019-09-09 05:31:26,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:31:26" (1/1) ... [2019-09-09 05:31:26,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:31:26" (1/1) ... [2019-09-09 05:31:26,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:31:26" (1/1) ... [2019-09-09 05:31:26,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:31:26" (1/1) ... [2019-09-09 05:31:26,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:31:26" (1/1) ... [2019-09-09 05:31:26,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 05:31:26,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 05:31:26,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 05:31:26,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 05:31:26,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:31:26" (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 [2019-09-09 05:31:27,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 05:31:27,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 05:31:27,056 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2019-09-09 05:31:27,056 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 05:31:27,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 05:31:27,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 05:31:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure max [2019-09-09 05:31:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-09 05:31:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 05:31:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-09 05:31:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-09 05:31:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-09 05:31:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 05:31:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 05:31:27,409 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 05:31:27,409 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-09 05:31:27,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:31:27 BoogieIcfgContainer [2019-09-09 05:31:27,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 05:31:27,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 05:31:27,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 05:31:27,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 05:31:27,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:31:26" (1/3) ... [2019-09-09 05:31:27,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e43a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:31:27, skipping insertion in model container [2019-09-09 05:31:27,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:31:26" (2/3) ... [2019-09-09 05:31:27,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e43a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:31:27, skipping insertion in model container [2019-09-09 05:31:27,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:31:27" (3/3) ... [2019-09-09 05:31:27,418 INFO L109 eAbstractionObserver]: Analyzing ICFG max40-1.i [2019-09-09 05:31:27,427 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 05:31:27,435 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 05:31:27,451 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 05:31:27,478 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 05:31:27,478 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 05:31:27,478 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 05:31:27,478 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 05:31:27,478 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 05:31:27,478 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 05:31:27,479 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 05:31:27,479 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 05:31:27,494 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-09-09 05:31:27,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-09 05:31:27,505 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:31:27,506 INFO L399 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] [2019-09-09 05:31:27,508 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:31:27,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:31:27,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1379671032, now seen corresponding path program 1 times [2019-09-09 05:31:27,515 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:31:27,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:31:27,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:31:27,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:31:27,557 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:31:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:31:27,685 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-09 05:31:27,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:31:27,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:31:27,688 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:31:27,694 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:31:27,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:31:27,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:31:27,712 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2019-09-09 05:31:27,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:31:27,763 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-09-09 05:31:27,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:31:27,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2019-09-09 05:31:27,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:31:27,776 INFO L225 Difference]: With dead ends: 35 [2019-09-09 05:31:27,777 INFO L226 Difference]: Without dead ends: 30 [2019-09-09 05:31:27,779 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:31:27,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-09-09 05:31:27,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2019-09-09 05:31:27,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-09-09 05:31:27,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-09-09 05:31:27,831 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 32 [2019-09-09 05:31:27,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:31:27,833 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-09-09 05:31:27,833 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:31:27,833 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-09-09 05:31:27,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-09-09 05:31:27,838 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:31:27,839 INFO L399 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] [2019-09-09 05:31:27,839 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:31:27,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:31:27,841 INFO L82 PathProgramCache]: Analyzing trace with hash 551744077, now seen corresponding path program 1 times [2019-09-09 05:31:27,841 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:31:27,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:31:27,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:31:27,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:31:27,849 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:31:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:31:27,957 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-09 05:31:27,957 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 05:31:27,957 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 05:31:27,958 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 35 with the following transitions: [2019-09-09 05:31:27,961 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [8], [23], [24], [28], [34], [36], [38], [43], [45], [51], [59], [61], [64], [65], [72], [73], [74], [76], [77], [78], [79], [80], [81] [2019-09-09 05:31:28,008 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 05:31:28,009 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 05:31:28,111 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 05:31:28,112 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. [2019-09-09 05:31:28,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:31:28,116 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 05:31:28,154 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-09 05:31:28,155 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 05:31:28,158 INFO L420 sIntCurrentIteration]: We unified 33 AI predicates to 33 [2019-09-09 05:31:28,158 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 05:31:28,159 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 05:31:28,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2019-09-09 05:31:28,159 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:31:28,161 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:31:28,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:31:28,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:31:28,162 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 2 states. [2019-09-09 05:31:28,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:31:28,163 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-09 05:31:28,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:31:28,163 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 34 [2019-09-09 05:31:28,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:31:28,164 INFO L225 Difference]: With dead ends: 6 [2019-09-09 05:31:28,164 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 05:31:28,165 INFO L628 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 [2019-09-09 05:31:28,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 05:31:28,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 05:31:28,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 05:31:28,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 05:31:28,166 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2019-09-09 05:31:28,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:31:28,166 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 05:31:28,167 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:31:28,167 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 05:31:28,167 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 05:31:28,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 05:31:28 BoogieIcfgContainer [2019-09-09 05:31:28,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 05:31:28,176 INFO L168 Benchmark]: Toolchain (without parser) took 1556.41 ms. Allocated memory was 143.1 MB in the beginning and 202.4 MB in the end (delta: 59.2 MB). Free memory was 91.0 MB in the beginning and 125.3 MB in the end (delta: -34.4 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2019-09-09 05:31:28,177 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 143.1 MB. Free memory was 109.2 MB in the beginning and 109.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 05:31:28,178 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.91 ms. Allocated memory is still 143.1 MB. Free memory was 90.8 MB in the beginning and 80.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-09-09 05:31:28,179 INFO L168 Benchmark]: Boogie Preprocessor took 127.14 ms. Allocated memory was 143.1 MB in the beginning and 202.4 MB in the end (delta: 59.2 MB). Free memory was 80.4 MB in the beginning and 179.3 MB in the end (delta: -98.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-09-09 05:31:28,180 INFO L168 Benchmark]: RCFGBuilder took 416.23 ms. Allocated memory is still 202.4 MB. Free memory was 179.3 MB in the beginning and 162.9 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2019-09-09 05:31:28,181 INFO L168 Benchmark]: TraceAbstraction took 761.22 ms. Allocated memory is still 202.4 MB. Free memory was 162.4 MB in the beginning and 125.3 MB in the end (delta: 37.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. [2019-09-09 05:31:28,185 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 143.1 MB. Free memory was 109.2 MB in the beginning and 109.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 247.91 ms. Allocated memory is still 143.1 MB. Free memory was 90.8 MB in the beginning and 80.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.14 ms. Allocated memory was 143.1 MB in the beginning and 202.4 MB in the end (delta: 59.2 MB). Free memory was 80.4 MB in the beginning and 179.3 MB in the end (delta: -98.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 416.23 ms. Allocated memory is still 202.4 MB. Free memory was 179.3 MB in the beginning and 162.9 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 761.22 ms. Allocated memory is still 202.4 MB. Free memory was 162.4 MB in the beginning and 125.3 MB in the end (delta: 37.0 MB). Peak memory consumption was 37.0 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, 33 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 2 OverallIterations, 3 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 41 SDtfs, 1 SDslu, 34 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.946969696969697 AbsIntWeakeningRatio, 1.303030303030303 AbsIntAvgWeakeningVarsNumRemoved, 0.18181818181818182 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 2178 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 23/31 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...