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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/count_by_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 16:12:35,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 16:12:35,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 16:12:35,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-16 16:12:35,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 16:12:35,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 16:12:35,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 16:12:35,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 16:12:35,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 16:12:35,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 16:12:35,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 16:12:35,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 16:12:35,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 16:12:35,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 16:12:35,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 16:12:35,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 16:12:35,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 16:12:35,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 16:12:35,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 16:12:35,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 16:12:35,109 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-16 16:12:35,123 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 16:12:35,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 16:12:35,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-16 16:12:35,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-16 16:12:35,125 INFO L138 SettingsManager]: * Use SBE=true [2019-09-16 16:12:35,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 16:12:35,125 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 16:12:35,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-16 16:12:35,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 16:12:35,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 16:12:35,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 16:12:35,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 16:12:35,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 16:12:35,127 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 16:12:35,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 16:12:35,127 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-16 16:12:35,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 16:12:35,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 16:12:35,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 16:12:35,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-16 16:12:35,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-16 16:12:35,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:12:35,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 16:12:35,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 16:12:35,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-16 16:12:35,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-16 16:12:35,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 16:12:35,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-16 16:12:35,130 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 16:12:35,163 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 16:12:35,177 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 16:12:35,183 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 16:12:35,184 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 16:12:35,184 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 16:12:35,185 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1.i [2019-09-16 16:12:35,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14a2de9a/91affd8238cd46bd987bd39f71c8623d/FLAG8021c0c8e [2019-09-16 16:12:35,659 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 16:12:35,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1.i [2019-09-16 16:12:35,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14a2de9a/91affd8238cd46bd987bd39f71c8623d/FLAG8021c0c8e [2019-09-16 16:12:36,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e14a2de9a/91affd8238cd46bd987bd39f71c8623d [2019-09-16 16:12:36,102 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 16:12:36,103 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 16:12:36,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 16:12:36,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 16:12:36,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 16:12:36,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:12:36" (1/1) ... [2019-09-16 16:12:36,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a059fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:36, skipping insertion in model container [2019-09-16 16:12:36,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:12:36" (1/1) ... [2019-09-16 16:12:36,119 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 16:12:36,137 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 16:12:36,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:12:36,313 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 16:12:36,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:12:36,340 INFO L192 MainTranslator]: Completed translation [2019-09-16 16:12:36,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:36 WrapperNode [2019-09-16 16:12:36,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 16:12:36,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 16:12:36,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 16:12:36,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 16:12:36,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:36" (1/1) ... [2019-09-16 16:12:36,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:36" (1/1) ... [2019-09-16 16:12:36,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:36" (1/1) ... [2019-09-16 16:12:36,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:36" (1/1) ... [2019-09-16 16:12:36,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:36" (1/1) ... [2019-09-16 16:12:36,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:36" (1/1) ... [2019-09-16 16:12:36,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:36" (1/1) ... [2019-09-16 16:12:36,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 16:12:36,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 16:12:36,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 16:12:36,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 16:12:36,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:36" (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 16:12:36,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 16:12:36,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 16:12:36,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 16:12:36,501 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 16:12:36,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 16:12:36,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-16 16:12:36,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 16:12:36,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 16:12:36,501 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 16:12:36,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 16:12:36,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 16:12:36,640 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 16:12:36,641 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-16 16:12:36,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:12:36 BoogieIcfgContainer [2019-09-16 16:12:36,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 16:12:36,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 16:12:36,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 16:12:36,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 16:12:36,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 04:12:36" (1/3) ... [2019-09-16 16:12:36,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d155ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:12:36, skipping insertion in model container [2019-09-16 16:12:36,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:36" (2/3) ... [2019-09-16 16:12:36,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d155ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:12:36, skipping insertion in model container [2019-09-16 16:12:36,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:12:36" (3/3) ... [2019-09-16 16:12:36,649 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1.i [2019-09-16 16:12:36,657 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 16:12:36,663 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 16:12:36,679 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 16:12:36,704 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-16 16:12:36,704 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 16:12:36,705 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-16 16:12:36,705 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 16:12:36,705 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 16:12:36,705 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 16:12:36,705 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 16:12:36,705 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 16:12:36,706 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 16:12:36,720 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-09-16 16:12:36,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-16 16:12:36,724 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:36,725 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:36,726 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:36,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:36,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2019-09-16 16:12:36,732 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:36,733 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:36,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:36,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:36,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:36,815 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 16:12:36,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:12:36,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 16:12:36,820 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 16:12:36,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 16:12:36,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 16:12:36,832 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-09-16 16:12:36,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:36,850 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2019-09-16 16:12:36,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 16:12:36,851 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-16 16:12:36,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:36,859 INFO L225 Difference]: With dead ends: 31 [2019-09-16 16:12:36,859 INFO L226 Difference]: Without dead ends: 12 [2019-09-16 16:12:36,862 INFO L636 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 [2019-09-16 16:12:36,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-09-16 16:12:36,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-09-16 16:12:36,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-09-16 16:12:36,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-09-16 16:12:36,895 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-09-16 16:12:36,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:36,896 INFO L475 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-09-16 16:12:36,896 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 16:12:36,896 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-09-16 16:12:36,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-16 16:12:36,897 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:36,897 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:36,897 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:36,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:36,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1877050693, now seen corresponding path program 1 times [2019-09-16 16:12:36,898 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:36,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:36,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:36,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:36,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:36,955 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 16:12:36,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:12:36,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 16:12:36,957 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 16:12:36,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 16:12:36,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 16:12:36,958 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2019-09-16 16:12:36,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:36,993 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-09-16 16:12:36,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 16:12:36,994 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-09-16 16:12:36,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:36,995 INFO L225 Difference]: With dead ends: 19 [2019-09-16 16:12:36,996 INFO L226 Difference]: Without dead ends: 14 [2019-09-16 16:12:37,003 INFO L636 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 [2019-09-16 16:12:37,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-09-16 16:12:37,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-09-16 16:12:37,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-16 16:12:37,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-09-16 16:12:37,013 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2019-09-16 16:12:37,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:37,014 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-09-16 16:12:37,014 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 16:12:37,014 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-09-16 16:12:37,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-16 16:12:37,015 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:37,018 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:37,018 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:37,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:37,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1175909113, now seen corresponding path program 1 times [2019-09-16 16:12:37,019 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:37,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:37,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:37,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:37,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:37,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:37,091 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:12:37,091 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:12:37,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:37,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-16 16:12:37,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:12:37,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Stream closed [2019-09-16 16:12:37,149 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:12:37,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-09-16 16:12:37,150 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 16:12:37,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 16:12:37,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-16 16:12:37,151 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2019-09-16 16:12:37,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:37,181 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2019-09-16 16:12:37,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 16:12:37,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-09-16 16:12:37,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:37,183 INFO L225 Difference]: With dead ends: 21 [2019-09-16 16:12:37,183 INFO L226 Difference]: Without dead ends: 16 [2019-09-16 16:12:37,184 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-16 16:12:37,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-16 16:12:37,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-09-16 16:12:37,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-16 16:12:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-09-16 16:12:37,189 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2019-09-16 16:12:37,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:37,189 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-09-16 16:12:37,189 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 16:12:37,190 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-09-16 16:12:37,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-16 16:12:37,190 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:37,191 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:37,191 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:37,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:37,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1607619511, now seen corresponding path program 2 times [2019-09-16 16:12:37,192 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:37,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:37,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:37,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:37,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:37,242 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: NonCoreBooleanSubTermTransformer does not support AnnotatedTerm at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.NonCoreBooleanSubTermTransformer$NonCoreBooleanSubtermTransformerHelper.convert(NonCoreBooleanSubTermTransformer.java:107) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:127) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.NonCoreBooleanSubTermTransformer.transform(NonCoreBooleanSubTermTransformer.java:51) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:87) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computePredicates(NestedInterpolantsBuilder.java:585) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:461) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-09-16 16:12:37,248 INFO L168 Benchmark]: Toolchain (without parser) took 1143.05 ms. Allocated memory was 136.8 MB in the beginning and 196.6 MB in the end (delta: 59.8 MB). Free memory was 84.4 MB in the beginning and 126.1 MB in the end (delta: -41.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:37,249 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 136.8 MB. Free memory was 103.0 MB in the beginning and 102.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 16:12:37,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.09 ms. Allocated memory is still 136.8 MB. Free memory was 84.0 MB in the beginning and 74.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:37,251 INFO L168 Benchmark]: Boogie Preprocessor took 107.19 ms. Allocated memory was 136.8 MB in the beginning and 196.6 MB in the end (delta: 59.8 MB). Free memory was 74.6 MB in the beginning and 174.4 MB in the end (delta: -99.9 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:37,252 INFO L168 Benchmark]: RCFGBuilder took 191.67 ms. Allocated memory is still 196.6 MB. Free memory was 174.4 MB in the beginning and 163.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:37,253 INFO L168 Benchmark]: TraceAbstraction took 601.82 ms. Allocated memory is still 196.6 MB. Free memory was 163.0 MB in the beginning and 126.1 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:37,257 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 136.8 MB. Free memory was 103.0 MB in the beginning and 102.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 238.09 ms. Allocated memory is still 136.8 MB. Free memory was 84.0 MB in the beginning and 74.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.19 ms. Allocated memory was 136.8 MB in the beginning and 196.6 MB in the end (delta: 59.8 MB). Free memory was 74.6 MB in the beginning and 174.4 MB in the end (delta: -99.9 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 191.67 ms. Allocated memory is still 196.6 MB. Free memory was 174.4 MB in the beginning and 163.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 601.82 ms. Allocated memory is still 196.6 MB. Free memory was 163.0 MB in the beginning and 126.1 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: NonCoreBooleanSubTermTransformer does not support AnnotatedTerm de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: NonCoreBooleanSubTermTransformer does not support AnnotatedTerm: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.NonCoreBooleanSubTermTransformer$NonCoreBooleanSubtermTransformerHelper.convert(NonCoreBooleanSubTermTransformer.java:107) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...