/usr/bin/java -ea -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/ldv-regression/test_cut_trace.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:30:32,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:30:32,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:30:32,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-17 22:30:32,159 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 [2020-07-17 22:30:32,173 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:30:32,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:30:32,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:30:32,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:30:32,175 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:30:32,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:30:32,175 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:30:32,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:30:32,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:30:32,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:30:32,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:30:32,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:30:32,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:30:32,177 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:30:32,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:30:32,177 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:30:32,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:30:32,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:30:32,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:30:32,178 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:30:32,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:30:32,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:30:32,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:30:32,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:30:32,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:30:32,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:30:32,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:30:32,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:30:32,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:30:32,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:30:32,432 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:30:32,446 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:30:32,449 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:30:32,450 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:30:32,451 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:30:32,451 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2020-07-17 22:30:32,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8d88a3d4/842051c3443948f4ab8d8a214f72698a/FLAGa1a820ab0 [2020-07-17 22:30:32,996 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:30:32,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2020-07-17 22:30:33,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8d88a3d4/842051c3443948f4ab8d8a214f72698a/FLAGa1a820ab0 [2020-07-17 22:30:33,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8d88a3d4/842051c3443948f4ab8d8a214f72698a [2020-07-17 22:30:33,419 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:30:33,422 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:30:33,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:30:33,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:30:33,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:30:33,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:30:33" (1/1) ... [2020-07-17 22:30:33,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@209e8b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:33, skipping insertion in model container [2020-07-17 22:30:33,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:30:33" (1/1) ... [2020-07-17 22:30:33,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:30:33,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:30:33,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:30:33,630 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:30:33,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:30:33,660 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:30:33,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:33 WrapperNode [2020-07-17 22:30:33,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:30:33,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:30:33,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:30:33,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:30:33,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:33" (1/1) ... [2020-07-17 22:30:33,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:33" (1/1) ... [2020-07-17 22:30:33,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:33" (1/1) ... [2020-07-17 22:30:33,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:33" (1/1) ... [2020-07-17 22:30:33,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:33" (1/1) ... [2020-07-17 22:30:33,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:33" (1/1) ... [2020-07-17 22:30:33,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:33" (1/1) ... [2020-07-17 22:30:33,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:30:33,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:30:33,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:30:33,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:30:33,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:33" (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 [2020-07-17 22:30:33,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:30:33,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:30:33,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-17 22:30:33,830 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:30:33,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:30:33,830 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-17 22:30:33,830 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:30:33,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:30:33,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:30:34,020 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:30:34,020 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 22:30:34,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:30:34 BoogieIcfgContainer [2020-07-17 22:30:34,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:30:34,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:30:34,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:30:34,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:30:34,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:30:33" (1/3) ... [2020-07-17 22:30:34,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8f50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:30:34, skipping insertion in model container [2020-07-17 22:30:34,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:30:33" (2/3) ... [2020-07-17 22:30:34,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8f50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:30:34, skipping insertion in model container [2020-07-17 22:30:34,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:30:34" (3/3) ... [2020-07-17 22:30:34,033 INFO L109 eAbstractionObserver]: Analyzing ICFG test_cut_trace.i [2020-07-17 22:30:34,045 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:30:34,068 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:30:34,113 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:30:34,153 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:30:34,153 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:30:34,153 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:30:34,154 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:30:34,154 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:30:34,154 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:30:34,154 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:30:34,154 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:30:34,186 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-17 22:30:34,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-17 22:30:34,193 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:30:34,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:30:34,195 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:30:34,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:30:34,202 INFO L82 PathProgramCache]: Analyzing trace with hash -417355086, now seen corresponding path program 1 times [2020-07-17 22:30:34,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:30:34,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131237603] [2020-07-17 22:30:34,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:30:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:30:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:30:34,395 INFO L280 TraceCheckUtils]: 0: Hoare triple {22#true} assume true; {22#true} is VALID [2020-07-17 22:30:34,395 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {22#true} {22#true} #26#return; {22#true} is VALID [2020-07-17 22:30:34,398 INFO L263 TraceCheckUtils]: 0: Hoare triple {22#true} call ULTIMATE.init(); {22#true} is VALID [2020-07-17 22:30:34,398 INFO L280 TraceCheckUtils]: 1: Hoare triple {22#true} assume true; {22#true} is VALID [2020-07-17 22:30:34,399 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {22#true} {22#true} #26#return; {22#true} is VALID [2020-07-17 22:30:34,399 INFO L263 TraceCheckUtils]: 3: Hoare triple {22#true} call #t~ret0 := main(); {22#true} is VALID [2020-07-17 22:30:34,401 INFO L280 TraceCheckUtils]: 4: Hoare triple {22#true} havoc ~z~0;havoc ~a~0;~z~0 := 0; {26#(= 0 main_~z~0)} is VALID [2020-07-17 22:30:34,402 INFO L280 TraceCheckUtils]: 5: Hoare triple {26#(= 0 main_~z~0)} assume !(0 == ~z~0); {23#false} is VALID [2020-07-17 22:30:34,402 INFO L263 TraceCheckUtils]: 6: Hoare triple {23#false} call __blast_assert(); {23#false} is VALID [2020-07-17 22:30:34,403 INFO L280 TraceCheckUtils]: 7: Hoare triple {23#false} assume !false; {23#false} is VALID [2020-07-17 22:30:34,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:30:34,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131237603] [2020-07-17 22:30:34,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:30:34,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 22:30:34,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398583325] [2020-07-17 22:30:34,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-07-17 22:30:34,416 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:30:34,421 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-17 22:30:34,444 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:30:34,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 22:30:34,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:30:34,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 22:30:34,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 22:30:34,458 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-07-17 22:30:34,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:30:34,534 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-07-17 22:30:34,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 22:30:34,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-07-17 22:30:34,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:30:34,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-17 22:30:34,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2020-07-17 22:30:34,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-17 22:30:34,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2020-07-17 22:30:34,550 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 32 transitions. [2020-07-17 22:30:34,629 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:30:34,640 INFO L225 Difference]: With dead ends: 29 [2020-07-17 22:30:34,640 INFO L226 Difference]: Without dead ends: 11 [2020-07-17 22:30:34,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 22:30:34,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-07-17 22:30:34,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-07-17 22:30:34,691 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:30:34,692 INFO L82 GeneralOperation]: Start isEquivalent. First operand 11 states. Second operand 11 states. [2020-07-17 22:30:34,692 INFO L74 IsIncluded]: Start isIncluded. First operand 11 states. Second operand 11 states. [2020-07-17 22:30:34,693 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 11 states. [2020-07-17 22:30:34,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:30:34,696 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-07-17 22:30:34,696 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-07-17 22:30:34,696 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:30:34,697 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:30:34,697 INFO L74 IsIncluded]: Start isIncluded. First operand 11 states. Second operand 11 states. [2020-07-17 22:30:34,697 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 11 states. [2020-07-17 22:30:34,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:30:34,700 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-07-17 22:30:34,700 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-07-17 22:30:34,700 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:30:34,701 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:30:34,701 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:30:34,701 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:30:34,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-17 22:30:34,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-07-17 22:30:34,705 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2020-07-17 22:30:34,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:30:34,705 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-07-17 22:30:34,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 22:30:34,706 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-07-17 22:30:34,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 22:30:34,707 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:30:34,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:30:34,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:30:34,708 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:30:34,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:30:34,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1648524013, now seen corresponding path program 1 times [2020-07-17 22:30:34,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:30:34,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880939848] [2020-07-17 22:30:34,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:30:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:30:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:30:34,815 INFO L280 TraceCheckUtils]: 0: Hoare triple {106#true} assume true; {106#true} is VALID [2020-07-17 22:30:34,816 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {106#true} {106#true} #26#return; {106#true} is VALID [2020-07-17 22:30:34,816 INFO L263 TraceCheckUtils]: 0: Hoare triple {106#true} call ULTIMATE.init(); {106#true} is VALID [2020-07-17 22:30:34,816 INFO L280 TraceCheckUtils]: 1: Hoare triple {106#true} assume true; {106#true} is VALID [2020-07-17 22:30:34,817 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {106#true} {106#true} #26#return; {106#true} is VALID [2020-07-17 22:30:34,817 INFO L263 TraceCheckUtils]: 3: Hoare triple {106#true} call #t~ret0 := main(); {106#true} is VALID [2020-07-17 22:30:34,819 INFO L280 TraceCheckUtils]: 4: Hoare triple {106#true} havoc ~z~0;havoc ~a~0;~z~0 := 0; {110#(and (<= 0 main_~z~0) (<= main_~z~0 0))} is VALID [2020-07-17 22:30:34,820 INFO L280 TraceCheckUtils]: 5: Hoare triple {110#(and (<= 0 main_~z~0) (<= main_~z~0 0))} assume 0 == ~z~0; {110#(and (<= 0 main_~z~0) (<= main_~z~0 0))} is VALID [2020-07-17 22:30:34,821 INFO L280 TraceCheckUtils]: 6: Hoare triple {110#(and (<= 0 main_~z~0) (<= main_~z~0 0))} ~a~0 := ~z~0; {111#(and (<= main_~a~0 0) (<= 0 main_~a~0))} is VALID [2020-07-17 22:30:34,823 INFO L280 TraceCheckUtils]: 7: Hoare triple {111#(and (<= main_~a~0 0) (<= 0 main_~a~0))} assume !(0 == ~a~0); {107#false} is VALID [2020-07-17 22:30:34,823 INFO L263 TraceCheckUtils]: 8: Hoare triple {107#false} call __blast_assert(); {107#false} is VALID [2020-07-17 22:30:34,824 INFO L280 TraceCheckUtils]: 9: Hoare triple {107#false} assume !false; {107#false} is VALID [2020-07-17 22:30:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:30:34,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880939848] [2020-07-17 22:30:34,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:30:34,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 22:30:34,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183589029] [2020-07-17 22:30:34,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-17 22:30:34,828 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:30:34,828 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-17 22:30:34,844 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:30:34,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 22:30:34,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:30:34,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 22:30:34,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 22:30:34,846 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 4 states. [2020-07-17 22:30:34,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:30:34,893 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-07-17 22:30:34,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 22:30:34,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-17 22:30:34,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:30:34,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-17 22:30:34,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-07-17 22:30:34,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-17 22:30:34,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-07-17 22:30:34,897 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 10 transitions. [2020-07-17 22:30:34,912 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:30:34,912 INFO L225 Difference]: With dead ends: 11 [2020-07-17 22:30:34,913 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 22:30:34,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 22:30:34,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 22:30:34,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 22:30:34,914 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:30:34,915 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-17 22:30:34,915 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-17 22:30:34,915 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-17 22:30:34,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:30:34,915 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-17 22:30:34,916 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:30:34,916 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:30:34,916 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:30:34,917 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-17 22:30:34,917 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-17 22:30:34,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:30:34,917 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-17 22:30:34,918 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:30:34,918 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:30:34,918 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:30:34,918 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:30:34,918 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:30:34,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 22:30:34,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 22:30:34,919 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-07-17 22:30:34,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:30:34,920 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 22:30:34,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 22:30:34,920 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:30:34,920 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:30:34,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 22:30:34,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 22:30:34,962 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 22:30:34,962 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-17 22:30:34,963 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-07-17 22:30:34,963 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-17 22:30:34,963 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-17 22:30:34,963 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-07-17 22:30:34,964 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-17 22:30:34,964 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 22:30:34,964 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 22:30:34,964 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-17 22:30:34,964 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 20) the Hoare annotation is: true [2020-07-17 22:30:34,965 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 20) no Hoare annotation was computed. [2020-07-17 22:30:34,965 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-07-17 22:30:34,965 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-07-17 22:30:34,965 INFO L264 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: false [2020-07-17 22:30:34,965 INFO L268 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-07-17 22:30:34,966 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: false [2020-07-17 22:30:34,966 INFO L268 CegarLoopResult]: For program point L16-3(line 16) no Hoare annotation was computed. [2020-07-17 22:30:34,966 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 20) no Hoare annotation was computed. [2020-07-17 22:30:34,971 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:30:34,971 WARN L170 areAnnotationChecker]: __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION has no Hoare annotation [2020-07-17 22:30:34,971 WARN L170 areAnnotationChecker]: __blast_assertFINAL has no Hoare annotation [2020-07-17 22:30:34,972 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2020-07-17 22:30:34,972 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:30:34,972 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:30:34,972 WARN L170 areAnnotationChecker]: __blast_assertFINAL has no Hoare annotation [2020-07-17 22:30:34,972 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2020-07-17 22:30:34,973 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2020-07-17 22:30:34,973 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:30:34,973 WARN L170 areAnnotationChecker]: __blast_assertEXIT has no Hoare annotation [2020-07-17 22:30:34,973 WARN L170 areAnnotationChecker]: __blast_assertEXIT has no Hoare annotation [2020-07-17 22:30:34,973 WARN L170 areAnnotationChecker]: L16-3 has no Hoare annotation [2020-07-17 22:30:34,973 WARN L170 areAnnotationChecker]: L16-3 has no Hoare annotation [2020-07-17 22:30:34,974 WARN L170 areAnnotationChecker]: L18-3 has no Hoare annotation [2020-07-17 22:30:34,974 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-17 22:30:34,974 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-17 22:30:34,974 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:30:34,974 WARN L170 areAnnotationChecker]: L18-3 has no Hoare annotation [2020-07-17 22:30:34,975 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:30:34,975 INFO L163 areAnnotationChecker]: CFG has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-17 22:30:34,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:30:34 BoogieIcfgContainer [2020-07-17 22:30:34,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:30:34,982 INFO L168 Benchmark]: Toolchain (without parser) took 1560.10 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 101.8 MB in the beginning and 100.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 65.6 MB. Max. memory is 7.1 GB. [2020-07-17 22:30:34,983 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 22:30:34,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.33 ms. Allocated memory is still 137.4 MB. Free memory was 101.6 MB in the beginning and 92.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-07-17 22:30:34,985 INFO L168 Benchmark]: Boogie Preprocessor took 25.94 ms. Allocated memory is still 137.4 MB. Free memory was 92.4 MB in the beginning and 91.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-17 22:30:34,986 INFO L168 Benchmark]: RCFGBuilder took 336.38 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 90.8 MB in the beginning and 168.7 MB in the end (delta: -77.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-17 22:30:34,987 INFO L168 Benchmark]: TraceAbstraction took 952.54 ms. Allocated memory is still 201.3 MB. Free memory was 168.0 MB in the beginning and 100.2 MB in the end (delta: 67.8 MB). Peak memory consumption was 67.8 MB. Max. memory is 7.1 GB. [2020-07-17 22:30:34,991 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 238.33 ms. Allocated memory is still 137.4 MB. Free memory was 101.6 MB in the beginning and 92.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.94 ms. Allocated memory is still 137.4 MB. Free memory was 92.4 MB in the beginning and 91.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 336.38 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 90.8 MB in the beginning and 168.7 MB in the end (delta: -77.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 952.54 ms. Allocated memory is still 201.3 MB. Free memory was 168.0 MB in the beginning and 100.2 MB in the end (delta: 67.8 MB). Peak memory consumption was 67.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 7 SDslu, 16 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 306 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...