/usr/bin/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-lit/hhk2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:23:10,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:23:10,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:23:10,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 21:23:10,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:23:10,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:23:10,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:23:10,706 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 [2019-11-06 21:23:10,720 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:23:10,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:23:10,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:23:10,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:23:10,722 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:23:10,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:23:10,722 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:23:10,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:23:10,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:23:10,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:23:10,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:23:10,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:23:10,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:23:10,723 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:23:10,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:23:10,724 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:23:10,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:23:10,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:23:10,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:23:10,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:23:10,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:23:10,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:23:10,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:23:10,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:23:10,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:23:10,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:23:10,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:23:10,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:23:10,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:23:10,994 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:23:11,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:23:11,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:23:11,012 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:23:11,012 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:23:11,013 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/hhk2008.i [2019-11-06 21:23:11,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09b47d8d7/68558b0f05a04609901efe123e75e535/FLAG15c7706ca [2019-11-06 21:23:11,514 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:23:11,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/hhk2008.i [2019-11-06 21:23:11,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09b47d8d7/68558b0f05a04609901efe123e75e535/FLAG15c7706ca [2019-11-06 21:23:11,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09b47d8d7/68558b0f05a04609901efe123e75e535 [2019-11-06 21:23:11,921 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:23:11,922 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:23:11,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:23:11,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:23:11,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:23:11,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:23:11" (1/1) ... [2019-11-06 21:23:11,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@529b5f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:11, skipping insertion in model container [2019-11-06 21:23:11,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:23:11" (1/1) ... [2019-11-06 21:23:11,938 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:23:11,955 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:23:12,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:23:12,145 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:23:12,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:23:12,171 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:23:12,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:12 WrapperNode [2019-11-06 21:23:12,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:23:12,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:23:12,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:23:12,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:23:12,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:12" (1/1) ... [2019-11-06 21:23:12,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:12" (1/1) ... [2019-11-06 21:23:12,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:12" (1/1) ... [2019-11-06 21:23:12,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:12" (1/1) ... [2019-11-06 21:23:12,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:12" (1/1) ... [2019-11-06 21:23:12,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:12" (1/1) ... [2019-11-06 21:23:12,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:12" (1/1) ... [2019-11-06 21:23:12,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:23:12,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:23:12,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:23:12,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:23:12,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:12" (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 [2019-11-06 21:23:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:23:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:23:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 21:23:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:23:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:23:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 21:23:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 21:23:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:23:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:23:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:23:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:23:12,517 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:23:12,517 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 21:23:12,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:23:12 BoogieIcfgContainer [2019-11-06 21:23:12,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:23:12,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:23:12,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:23:12,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:23:12,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:23:11" (1/3) ... [2019-11-06 21:23:12,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb8408e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:23:12, skipping insertion in model container [2019-11-06 21:23:12,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:23:12" (2/3) ... [2019-11-06 21:23:12,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb8408e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:23:12, skipping insertion in model container [2019-11-06 21:23:12,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:23:12" (3/3) ... [2019-11-06 21:23:12,535 INFO L109 eAbstractionObserver]: Analyzing ICFG hhk2008.i [2019-11-06 21:23:12,546 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:23:12,553 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:23:12,561 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:23:12,585 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:23:12,586 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:23:12,586 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:23:12,586 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:23:12,586 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:23:12,586 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:23:12,587 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:23:12,587 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:23:12,604 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-06 21:23:12,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-06 21:23:12,608 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:23:12,609 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:23:12,611 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:23:12,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:23:12,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1632835705, now seen corresponding path program 1 times [2019-11-06 21:23:12,623 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:23:12,623 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479237896] [2019-11-06 21:23:12,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:23:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:12,888 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2019-11-06 21:23:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:12,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:12,981 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479237896] [2019-11-06 21:23:12,982 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:23:12,982 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 21:23:12,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254825456] [2019-11-06 21:23:12,989 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 21:23:12,989 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:23:13,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 21:23:13,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:23:13,007 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 6 states. [2019-11-06 21:23:13,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:23:13,124 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2019-11-06 21:23:13,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:23:13,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-06 21:23:13,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:23:13,138 INFO L225 Difference]: With dead ends: 41 [2019-11-06 21:23:13,139 INFO L226 Difference]: Without dead ends: 14 [2019-11-06 21:23:13,143 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:23:13,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-06 21:23:13,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-06 21:23:13,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-06 21:23:13,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-06 21:23:13,190 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2019-11-06 21:23:13,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:23:13,191 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-06 21:23:13,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 21:23:13,191 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-06 21:23:13,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-06 21:23:13,192 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:23:13,192 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:23:13,194 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:23:13,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:23:13,195 INFO L82 PathProgramCache]: Analyzing trace with hash -886162946, now seen corresponding path program 1 times [2019-11-06 21:23:13,196 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:23:13,196 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580581640] [2019-11-06 21:23:13,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:23:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:13,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:13,418 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580581640] [2019-11-06 21:23:13,419 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513970637] [2019-11-06 21:23:13,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:23:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:23:13,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-06 21:23:13,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:23:13,592 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:23:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:23:13,630 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:23:13,630 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-11-06 21:23:13,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383317709] [2019-11-06 21:23:13,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 21:23:13,635 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:23:13,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 21:23:13,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:23:13,637 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 12 states. [2019-11-06 21:23:13,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:23:13,871 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-11-06 21:23:13,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 21:23:13,872 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2019-11-06 21:23:13,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:23:13,873 INFO L225 Difference]: With dead ends: 16 [2019-11-06 21:23:13,873 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 21:23:13,875 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:23:13,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 21:23:13,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 21:23:13,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 21:23:13,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 21:23:13,876 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-11-06 21:23:13,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:23:13,876 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 21:23:13,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 21:23:13,877 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 21:23:13,877 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 21:23:14,082 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:23:14,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 21:23:14,196 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-06 21:23:14,197 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:23:14,197 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:23:14,197 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 21:23:14,197 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 21:23:14,197 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:23:14,197 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 24) the Hoare annotation is: true [2019-11-06 21:23:14,198 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 24) no Hoare annotation was computed. [2019-11-06 21:23:14,198 INFO L443 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-06 21:23:14,198 INFO L439 ceAbstractionStarter]: At program point L18-2(lines 18 21) the Hoare annotation is: (let ((.cse1 (+ main_~res~0 main_~cnt~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (< main_~res~0 (+ main_~a~0 main_~b~0 1)) (<= .cse1 .cse0))) [2019-11-06 21:23:14,198 INFO L443 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-11-06 21:23:14,198 INFO L439 ceAbstractionStarter]: At program point L18-3(lines 18 21) the Hoare annotation is: (and (<= (+ main_~a~0 main_~b~0) main_~res~0) (< main_~res~0 (+ main_~a~0 main_~b~0 1))) [2019-11-06 21:23:14,199 INFO L443 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-06 21:23:14,200 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 24) no Hoare annotation was computed. [2019-11-06 21:23:14,200 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-06 21:23:14,201 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-06 21:23:14,201 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-06 21:23:14,201 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-06 21:23:14,201 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-06 21:23:14,201 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-06 21:23:14,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:23:14 BoogieIcfgContainer [2019-11-06 21:23:14,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 21:23:14,236 INFO L168 Benchmark]: Toolchain (without parser) took 2312.52 ms. Allocated memory was 138.9 MB in the beginning and 234.9 MB in the end (delta: 95.9 MB). Free memory was 103.7 MB in the beginning and 191.7 MB in the end (delta: -88.0 MB). Peak memory consumption was 7.9 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:14,238 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 21:23:14,240 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.87 ms. Allocated memory is still 138.9 MB. Free memory was 103.4 MB in the beginning and 94.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:14,241 INFO L168 Benchmark]: Boogie Preprocessor took 116.58 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 94.1 MB in the beginning and 181.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:14,243 INFO L168 Benchmark]: RCFGBuilder took 235.06 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 169.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:14,244 INFO L168 Benchmark]: TraceAbstraction took 1706.80 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 169.0 MB in the beginning and 191.7 MB in the end (delta: -22.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-11-06 21:23:14,254 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 248.87 ms. Allocated memory is still 138.9 MB. Free memory was 103.4 MB in the beginning and 94.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.58 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 94.1 MB in the beginning and 181.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 235.06 ms. Allocated memory is still 202.9 MB. Free memory was 181.3 MB in the beginning and 169.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1706.80 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 169.0 MB in the beginning and 191.7 MB in the end (delta: -22.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: (a + b <= res + cnt && res < a + b + 1) && res + cnt <= a + b - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 28 SDtfs, 18 SDslu, 77 SDs, 0 SdLazy, 50 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 38 HoareAnnotationTreeSize, 10 FomulaSimplifications, 26 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 73 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 1813 SizeOfPredicates, 3 NumberOfNonLiveVariables, 40 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...