/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_io_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:41:10,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:41:10,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:41:10,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 00:41:10,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:41:10,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:41:10,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:41:10,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:41:10,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:41:10,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:41:10,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:41:10,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:41:10,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:41:10,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:41:10,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:41:10,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:41:10,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 00:41:10,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 00:41:10,645 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:41:10,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:41:10,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:41:10,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:41:10,647 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:41:10,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:41:10,648 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:41:10,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:41:10,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:41:10,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:41:10,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:41:10,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:41:10,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:41:10,650 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:41:10,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:41:10,651 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:41:10,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:41:10,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:41:10,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:41:10,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:41:10,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:41:10,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:41:10,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:41:10,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:41:10,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:41:10,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:41:10,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:41:10,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:41:10,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:41:10,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:41:10,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:41:10,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:41:10,950 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:41:10,952 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:41:10,952 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:41:10,953 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_io_1.c [2020-08-22 00:41:11,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5091b10f/a5c6dec7c4794a21b269eff1bcf9b524/FLAGa257a400f [2020-08-22 00:41:11,430 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:41:11,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_io_1.c [2020-08-22 00:41:11,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5091b10f/a5c6dec7c4794a21b269eff1bcf9b524/FLAGa257a400f [2020-08-22 00:41:11,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5091b10f/a5c6dec7c4794a21b269eff1bcf9b524 [2020-08-22 00:41:11,795 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:41:11,797 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:41:11,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:41:11,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:41:11,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:41:11,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:41:11" (1/1) ... [2020-08-22 00:41:11,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fcb8091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:41:11, skipping insertion in model container [2020-08-22 00:41:11,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:41:11" (1/1) ... [2020-08-22 00:41:11,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:41:11,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:41:12,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:41:12,107 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:41:12,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:41:12,274 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:41:12,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:41:12 WrapperNode [2020-08-22 00:41:12,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:41:12,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:41:12,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:41:12,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:41:12,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:41:12" (1/1) ... [2020-08-22 00:41:12,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:41:12" (1/1) ... [2020-08-22 00:41:12,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:41:12" (1/1) ... [2020-08-22 00:41:12,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:41:12" (1/1) ... [2020-08-22 00:41:12,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:41:12" (1/1) ... [2020-08-22 00:41:12,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:41:12" (1/1) ... [2020-08-22 00:41:12,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:41:12" (1/1) ... [2020-08-22 00:41:12,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:41:12,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:41:12,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:41:12,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:41:12,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:41:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-22 00:41:12,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:41:12,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:41:12,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:41:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:41:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:41:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:41:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:41:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:41:12,822 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:41:12,823 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 00:41:12,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:41:12 BoogieIcfgContainer [2020-08-22 00:41:12,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:41:12,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:41:12,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:41:12,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:41:12,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:41:11" (1/3) ... [2020-08-22 00:41:12,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3facc0e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:41:12, skipping insertion in model container [2020-08-22 00:41:12,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:41:12" (2/3) ... [2020-08-22 00:41:12,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3facc0e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:41:12, skipping insertion in model container [2020-08-22 00:41:12,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:41:12" (3/3) ... [2020-08-22 00:41:12,847 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2020-08-22 00:41:12,858 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:41:12,866 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:41:12,880 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:41:12,905 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:41:12,905 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:41:12,906 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:41:12,906 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:41:12,906 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:41:12,906 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:41:12,906 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:41:12,907 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:41:12,928 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-22 00:41:12,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 00:41:12,935 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:41:12,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:41:12,937 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:41:12,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:41:12,943 INFO L82 PathProgramCache]: Analyzing trace with hash -901605196, now seen corresponding path program 1 times [2020-08-22 00:41:12,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:41:12,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352857669] [2020-08-22 00:41:12,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:41:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:41:13,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:41:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:41:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:41:13,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352857669] [2020-08-22 00:41:13,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:41:13,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 00:41:13,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346299264] [2020-08-22 00:41:13,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 00:41:13,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:41:13,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 00:41:13,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:41:13,175 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2020-08-22 00:41:13,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:41:13,249 INFO L93 Difference]: Finished difference Result 136 states and 250 transitions. [2020-08-22 00:41:13,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 00:41:13,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-08-22 00:41:13,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:41:13,264 INFO L225 Difference]: With dead ends: 136 [2020-08-22 00:41:13,264 INFO L226 Difference]: Without dead ends: 61 [2020-08-22 00:41:13,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:41:13,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-22 00:41:13,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-08-22 00:41:13,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-08-22 00:41:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 91 transitions. [2020-08-22 00:41:13,315 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 91 transitions. Word has length 13 [2020-08-22 00:41:13,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:41:13,315 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 91 transitions. [2020-08-22 00:41:13,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 00:41:13,316 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 91 transitions. [2020-08-22 00:41:13,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 00:41:13,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:41:13,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:41:13,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:41:13,318 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:41:13,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:41:13,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1647463811, now seen corresponding path program 1 times [2020-08-22 00:41:13,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:41:13,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387490519] [2020-08-22 00:41:13,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:41:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:41:13,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:41:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:41:13,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:41:13,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387490519] [2020-08-22 00:41:13,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:41:13,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:41:13,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078952481] [2020-08-22 00:41:13,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:41:13,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:41:13,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:41:13,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:41:13,423 INFO L87 Difference]: Start difference. First operand 61 states and 91 transitions. Second operand 4 states. [2020-08-22 00:41:13,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:41:13,658 INFO L93 Difference]: Finished difference Result 119 states and 180 transitions. [2020-08-22 00:41:13,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 00:41:13,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-22 00:41:13,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:41:13,661 INFO L225 Difference]: With dead ends: 119 [2020-08-22 00:41:13,661 INFO L226 Difference]: Without dead ends: 64 [2020-08-22 00:41:13,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:41:13,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-08-22 00:41:13,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-08-22 00:41:13,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-22 00:41:13,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 94 transitions. [2020-08-22 00:41:13,684 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 94 transitions. Word has length 14 [2020-08-22 00:41:13,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:41:13,686 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 94 transitions. [2020-08-22 00:41:13,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:41:13,686 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 94 transitions. [2020-08-22 00:41:13,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 00:41:13,689 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:41:13,689 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:41:13,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:41:13,690 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:41:13,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:41:13,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1212559863, now seen corresponding path program 1 times [2020-08-22 00:41:13,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:41:13,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020645228] [2020-08-22 00:41:13,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:41:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:41:13,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:41:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:41:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:41:13,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020645228] [2020-08-22 00:41:13,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:41:13,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:41:13,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342263862] [2020-08-22 00:41:13,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:41:13,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:41:13,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:41:13,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:41:13,796 INFO L87 Difference]: Start difference. First operand 64 states and 94 transitions. Second operand 4 states. [2020-08-22 00:41:13,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:41:13,873 INFO L93 Difference]: Finished difference Result 113 states and 169 transitions. [2020-08-22 00:41:13,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 00:41:13,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-22 00:41:13,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:41:13,875 INFO L225 Difference]: With dead ends: 113 [2020-08-22 00:41:13,875 INFO L226 Difference]: Without dead ends: 56 [2020-08-22 00:41:13,876 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 [2020-08-22 00:41:13,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-22 00:41:13,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-08-22 00:41:13,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-22 00:41:13,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 80 transitions. [2020-08-22 00:41:13,885 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 80 transitions. Word has length 19 [2020-08-22 00:41:13,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:41:13,886 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 80 transitions. [2020-08-22 00:41:13,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:41:13,886 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 80 transitions. [2020-08-22 00:41:13,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 00:41:13,887 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:41:13,887 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:41:13,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:41:13,888 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:41:13,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:41:13,888 INFO L82 PathProgramCache]: Analyzing trace with hash -2054021688, now seen corresponding path program 1 times [2020-08-22 00:41:13,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:41:13,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527301154] [2020-08-22 00:41:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:41:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:41:13,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:41:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:41:13,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:41:13,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527301154] [2020-08-22 00:41:13,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:41:13,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:41:13,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008426454] [2020-08-22 00:41:13,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:41:13,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:41:13,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:41:13,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:41:13,967 INFO L87 Difference]: Start difference. First operand 56 states and 80 transitions. Second operand 4 states. [2020-08-22 00:41:14,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:41:14,146 INFO L93 Difference]: Finished difference Result 140 states and 210 transitions. [2020-08-22 00:41:14,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 00:41:14,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-22 00:41:14,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:41:14,149 INFO L225 Difference]: With dead ends: 140 [2020-08-22 00:41:14,149 INFO L226 Difference]: Without dead ends: 94 [2020-08-22 00:41:14,150 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 [2020-08-22 00:41:14,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-08-22 00:41:14,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2020-08-22 00:41:14,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-08-22 00:41:14,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 132 transitions. [2020-08-22 00:41:14,167 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 132 transitions. Word has length 24 [2020-08-22 00:41:14,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:41:14,168 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 132 transitions. [2020-08-22 00:41:14,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:41:14,168 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 132 transitions. [2020-08-22 00:41:14,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 00:41:14,171 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:41:14,171 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:41:14,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:41:14,171 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:41:14,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:41:14,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1279925660, now seen corresponding path program 1 times [2020-08-22 00:41:14,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:41:14,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389434997] [2020-08-22 00:41:14,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:41:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:41:14,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:41:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:41:14,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:41:14,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389434997] [2020-08-22 00:41:14,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:41:14,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:41:14,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436577118] [2020-08-22 00:41:14,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:41:14,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:41:14,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:41:14,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:41:14,259 INFO L87 Difference]: Start difference. First operand 91 states and 132 transitions. Second operand 4 states. [2020-08-22 00:41:14,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:41:14,362 INFO L93 Difference]: Finished difference Result 180 states and 262 transitions. [2020-08-22 00:41:14,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 00:41:14,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-22 00:41:14,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:41:14,365 INFO L225 Difference]: With dead ends: 180 [2020-08-22 00:41:14,365 INFO L226 Difference]: Without dead ends: 101 [2020-08-22 00:41:14,366 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 [2020-08-22 00:41:14,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-08-22 00:41:14,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2020-08-22 00:41:14,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-08-22 00:41:14,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 140 transitions. [2020-08-22 00:41:14,376 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 140 transitions. Word has length 25 [2020-08-22 00:41:14,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:41:14,376 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 140 transitions. [2020-08-22 00:41:14,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:41:14,376 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 140 transitions. [2020-08-22 00:41:14,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 00:41:14,378 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:41:14,378 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:41:14,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:41:14,379 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:41:14,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:41:14,379 INFO L82 PathProgramCache]: Analyzing trace with hash -964230168, now seen corresponding path program 1 times [2020-08-22 00:41:14,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:41:14,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76946154] [2020-08-22 00:41:14,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:41:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:41:14,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:41:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:41:14,437 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 00:41:14,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76946154] [2020-08-22 00:41:14,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:41:14,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:41:14,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739905339] [2020-08-22 00:41:14,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:41:14,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:41:14,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:41:14,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:41:14,440 INFO L87 Difference]: Start difference. First operand 99 states and 140 transitions. Second operand 4 states. [2020-08-22 00:41:14,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:41:14,522 INFO L93 Difference]: Finished difference Result 164 states and 234 transitions. [2020-08-22 00:41:14,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 00:41:14,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-08-22 00:41:14,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:41:14,524 INFO L225 Difference]: With dead ends: 164 [2020-08-22 00:41:14,525 INFO L226 Difference]: Without dead ends: 77 [2020-08-22 00:41:14,526 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 [2020-08-22 00:41:14,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-22 00:41:14,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-08-22 00:41:14,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-08-22 00:41:14,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 105 transitions. [2020-08-22 00:41:14,534 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 105 transitions. Word has length 36 [2020-08-22 00:41:14,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:41:14,534 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 105 transitions. [2020-08-22 00:41:14,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:41:14,534 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 105 transitions. [2020-08-22 00:41:14,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 00:41:14,536 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:41:14,536 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:41:14,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:41:14,537 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:41:14,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:41:14,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1856126908, now seen corresponding path program 1 times [2020-08-22 00:41:14,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:41:14,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530555195] [2020-08-22 00:41:14,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:41:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:41:14,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:41:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:41:14,678 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 00:41:14,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530555195] [2020-08-22 00:41:14,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:41:14,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 00:41:14,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071222562] [2020-08-22 00:41:14,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 00:41:14,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:41:14,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 00:41:14,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:41:14,681 INFO L87 Difference]: Start difference. First operand 77 states and 105 transitions. Second operand 5 states. [2020-08-22 00:41:14,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:41:14,933 INFO L93 Difference]: Finished difference Result 80 states and 108 transitions. [2020-08-22 00:41:14,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 00:41:14,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-08-22 00:41:14,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:41:14,934 INFO L225 Difference]: With dead ends: 80 [2020-08-22 00:41:14,934 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 00:41:14,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:41:14,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 00:41:14,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 00:41:14,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 00:41:14,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 00:41:14,938 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-08-22 00:41:14,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:41:14,939 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 00:41:14,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 00:41:14,939 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 00:41:14,939 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 00:41:14,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 00:41:14,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 00:41:15,136 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-22 00:41:15,137 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_connect_2~0 |old(~m_connect_2~0)|) (= ~m_connect_1~0 |old(~m_connect_1~0)|) (= ~m_flush~0 |old(~m_flush~0)|) (= ~m_PipedOutputStream~0 |old(~m_PipedOutputStream~0)|) (= ~m_write~0 |old(~m_write~0)|) (= ~m_close~0 |old(~m_close~0)|)) [2020-08-22 00:41:15,137 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 00:41:15,137 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 00:41:15,137 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 00:41:15,137 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 00:41:15,138 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 00:41:15,138 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 344) no Hoare annotation was computed. [2020-08-22 00:41:15,138 INFO L268 CegarLoopResult]: For program point L36(lines 36 47) no Hoare annotation was computed. [2020-08-22 00:41:15,138 INFO L268 CegarLoopResult]: For program point L86(lines 86 101) no Hoare annotation was computed. [2020-08-22 00:41:15,138 INFO L268 CegarLoopResult]: For program point L53(lines 53 104) no Hoare annotation was computed. [2020-08-22 00:41:15,138 INFO L268 CegarLoopResult]: For program point L202(lines 202 217) no Hoare annotation was computed. [2020-08-22 00:41:15,139 INFO L268 CegarLoopResult]: For program point L70(lines 70 85) no Hoare annotation was computed. [2020-08-22 00:41:15,139 INFO L268 CegarLoopResult]: For program point L318(lines 318 333) no Hoare annotation was computed. [2020-08-22 00:41:15,139 INFO L268 CegarLoopResult]: For program point L186(lines 186 201) no Hoare annotation was computed. [2020-08-22 00:41:15,139 INFO L268 CegarLoopResult]: For program point L54(lines 54 69) no Hoare annotation was computed. [2020-08-22 00:41:15,139 INFO L264 CegarLoopResult]: At program point L335(lines 23 339) the Hoare annotation is: (let ((.cse0 (= main_~this_sink~0 0))) (or (and .cse0 (= main_~q~0 2)) (and (= main_~q~0 0) .cse0) (and (<= 3 main_~q~0) (or (<= (+ main_~this_sink~0 1) 0) (<= 1 main_~this_sink~0))))) [2020-08-22 00:41:15,139 INFO L268 CegarLoopResult]: For program point L302(lines 302 317) no Hoare annotation was computed. [2020-08-22 00:41:15,140 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 344) no Hoare annotation was computed. [2020-08-22 00:41:15,140 INFO L268 CegarLoopResult]: For program point L170(lines 170 185) no Hoare annotation was computed. [2020-08-22 00:41:15,140 INFO L268 CegarLoopResult]: For program point L286(lines 286 301) no Hoare annotation was computed. [2020-08-22 00:41:15,140 INFO L268 CegarLoopResult]: For program point L154(lines 154 169) no Hoare annotation was computed. [2020-08-22 00:41:15,140 INFO L268 CegarLoopResult]: For program point L88(lines 88 99) no Hoare annotation was computed. [2020-08-22 00:41:15,140 INFO L268 CegarLoopResult]: For program point L270(lines 270 285) no Hoare annotation was computed. [2020-08-22 00:41:15,140 INFO L268 CegarLoopResult]: For program point L204(lines 204 215) no Hoare annotation was computed. [2020-08-22 00:41:15,141 INFO L268 CegarLoopResult]: For program point L138(lines 138 153) no Hoare annotation was computed. [2020-08-22 00:41:15,141 INFO L268 CegarLoopResult]: For program point L105(lines 105 220) no Hoare annotation was computed. [2020-08-22 00:41:15,141 INFO L268 CegarLoopResult]: For program point L72(lines 72 83) no Hoare annotation was computed. [2020-08-22 00:41:15,141 INFO L268 CegarLoopResult]: For program point L320(lines 320 331) no Hoare annotation was computed. [2020-08-22 00:41:15,141 INFO L268 CegarLoopResult]: For program point L254(lines 254 269) no Hoare annotation was computed. [2020-08-22 00:41:15,141 INFO L268 CegarLoopResult]: For program point L221(lines 221 336) no Hoare annotation was computed. [2020-08-22 00:41:15,142 INFO L268 CegarLoopResult]: For program point L188(lines 188 199) no Hoare annotation was computed. [2020-08-22 00:41:15,142 INFO L268 CegarLoopResult]: For program point L122(lines 122 137) no Hoare annotation was computed. [2020-08-22 00:41:15,142 INFO L268 CegarLoopResult]: For program point L56(lines 56 67) no Hoare annotation was computed. [2020-08-22 00:41:15,142 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 339) the Hoare annotation is: (or (and (= main_~q~0 0) (= main_~this_sink~0 0)) (and (<= 3 main_~q~0) (or (<= (+ main_~this_sink~0 1) 0) (<= 1 main_~this_sink~0)))) [2020-08-22 00:41:15,142 INFO L268 CegarLoopResult]: For program point L23-3(lines 23 339) no Hoare annotation was computed. [2020-08-22 00:41:15,142 INFO L268 CegarLoopResult]: For program point L304(lines 304 315) no Hoare annotation was computed. [2020-08-22 00:41:15,142 INFO L268 CegarLoopResult]: For program point L238(lines 238 253) no Hoare annotation was computed. [2020-08-22 00:41:15,143 INFO L268 CegarLoopResult]: For program point L172(lines 172 183) no Hoare annotation was computed. [2020-08-22 00:41:15,143 INFO L268 CegarLoopResult]: For program point L106(lines 106 121) no Hoare annotation was computed. [2020-08-22 00:41:15,143 INFO L268 CegarLoopResult]: For program point L40(lines 40 42) no Hoare annotation was computed. [2020-08-22 00:41:15,143 INFO L268 CegarLoopResult]: For program point L288(lines 288 299) no Hoare annotation was computed. [2020-08-22 00:41:15,143 INFO L268 CegarLoopResult]: For program point L222(lines 222 237) no Hoare annotation was computed. [2020-08-22 00:41:15,143 INFO L268 CegarLoopResult]: For program point L156(lines 156 167) no Hoare annotation was computed. [2020-08-22 00:41:15,143 INFO L268 CegarLoopResult]: For program point L272(lines 272 283) no Hoare annotation was computed. [2020-08-22 00:41:15,143 INFO L268 CegarLoopResult]: For program point L140(lines 140 151) no Hoare annotation was computed. [2020-08-22 00:41:15,144 INFO L268 CegarLoopResult]: For program point L256(lines 256 267) no Hoare annotation was computed. [2020-08-22 00:41:15,144 INFO L268 CegarLoopResult]: For program point L124(lines 124 135) no Hoare annotation was computed. [2020-08-22 00:41:15,144 INFO L268 CegarLoopResult]: For program point L240(lines 240 251) no Hoare annotation was computed. [2020-08-22 00:41:15,144 INFO L268 CegarLoopResult]: For program point L108(lines 108 119) no Hoare annotation was computed. [2020-08-22 00:41:15,144 INFO L268 CegarLoopResult]: For program point L224(lines 224 235) no Hoare annotation was computed. [2020-08-22 00:41:15,144 INFO L268 CegarLoopResult]: For program point L92(lines 92 94) no Hoare annotation was computed. [2020-08-22 00:41:15,145 INFO L268 CegarLoopResult]: For program point L208(lines 208 210) no Hoare annotation was computed. [2020-08-22 00:41:15,145 INFO L268 CegarLoopResult]: For program point L76(lines 76 78) no Hoare annotation was computed. [2020-08-22 00:41:15,145 INFO L268 CegarLoopResult]: For program point L324(lines 324 326) no Hoare annotation was computed. [2020-08-22 00:41:15,145 INFO L268 CegarLoopResult]: For program point L192(lines 192 194) no Hoare annotation was computed. [2020-08-22 00:41:15,145 INFO L268 CegarLoopResult]: For program point L60(lines 60 62) no Hoare annotation was computed. [2020-08-22 00:41:15,145 INFO L268 CegarLoopResult]: For program point L308(lines 308 310) no Hoare annotation was computed. [2020-08-22 00:41:15,145 INFO L268 CegarLoopResult]: For program point L176(lines 176 178) no Hoare annotation was computed. [2020-08-22 00:41:15,146 INFO L264 CegarLoopResult]: At program point L325(lines 13 344) the Hoare annotation is: false [2020-08-22 00:41:15,146 INFO L268 CegarLoopResult]: For program point L292(lines 292 294) no Hoare annotation was computed. [2020-08-22 00:41:15,146 INFO L268 CegarLoopResult]: For program point L160(lines 160 162) no Hoare annotation was computed. [2020-08-22 00:41:15,146 INFO L268 CegarLoopResult]: For program point L276(lines 276 278) no Hoare annotation was computed. [2020-08-22 00:41:15,146 INFO L268 CegarLoopResult]: For program point L144(lines 144 146) no Hoare annotation was computed. [2020-08-22 00:41:15,146 INFO L268 CegarLoopResult]: For program point L260(lines 260 262) no Hoare annotation was computed. [2020-08-22 00:41:15,147 INFO L268 CegarLoopResult]: For program point L128(lines 128 130) no Hoare annotation was computed. [2020-08-22 00:41:15,147 INFO L268 CegarLoopResult]: For program point L244(lines 244 246) no Hoare annotation was computed. [2020-08-22 00:41:15,147 INFO L268 CegarLoopResult]: For program point L112(lines 112 114) no Hoare annotation was computed. [2020-08-22 00:41:15,147 INFO L268 CegarLoopResult]: For program point L228(lines 228 230) no Hoare annotation was computed. [2020-08-22 00:41:15,147 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 343) no Hoare annotation was computed. [2020-08-22 00:41:15,147 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 344) the Hoare annotation is: true [2020-08-22 00:41:15,148 INFO L268 CegarLoopResult]: For program point L33(lines 33 52) no Hoare annotation was computed. [2020-08-22 00:41:15,148 INFO L268 CegarLoopResult]: For program point L34(lines 34 49) no Hoare annotation was computed. [2020-08-22 00:41:15,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 12:41:15 BoogieIcfgContainer [2020-08-22 00:41:15,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 00:41:15,176 INFO L168 Benchmark]: Toolchain (without parser) took 3373.90 ms. Allocated memory was 140.5 MB in the beginning and 244.3 MB in the end (delta: 103.8 MB). Free memory was 103.6 MB in the beginning and 160.6 MB in the end (delta: -57.0 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. [2020-08-22 00:41:15,181 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 00:41:15,182 INFO L168 Benchmark]: CACSL2BoogieTranslator took 479.07 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 103.4 MB in the beginning and 183.3 MB in the end (delta: -79.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-08-22 00:41:15,182 INFO L168 Benchmark]: Boogie Preprocessor took 42.65 ms. Allocated memory is still 204.5 MB. Free memory was 183.3 MB in the beginning and 180.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-08-22 00:41:15,186 INFO L168 Benchmark]: RCFGBuilder took 508.81 ms. Allocated memory is still 204.5 MB. Free memory was 180.9 MB in the beginning and 153.4 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2020-08-22 00:41:15,187 INFO L168 Benchmark]: TraceAbstraction took 2328.90 ms. Allocated memory was 204.5 MB in the beginning and 244.3 MB in the end (delta: 39.8 MB). Free memory was 152.7 MB in the beginning and 160.6 MB in the end (delta: -7.9 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2020-08-22 00:41:15,196 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 479.07 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 103.4 MB in the beginning and 183.3 MB in the end (delta: -79.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.65 ms. Allocated memory is still 204.5 MB. Free memory was 183.3 MB in the beginning and 180.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 508.81 ms. Allocated memory is still 204.5 MB. Free memory was 180.9 MB in the beginning and 153.4 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2328.90 ms. Allocated memory was 204.5 MB in the beginning and 244.3 MB in the end (delta: 39.8 MB). Free memory was 152.7 MB in the beginning and 160.6 MB in the end (delta: -7.9 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 343]: 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: 23]: Loop Invariant Derived loop invariant: ((this_sink == 0 && q == 2) || (q == 0 && this_sink == 0)) || (3 <= q && (this_sink + 1 <= 0 || 1 <= this_sink)) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (q == 0 && this_sink == 0) || (3 <= q && (this_sink + 1 <= 0 || 1 <= this_sink)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 549 SDtfs, 777 SDslu, 50 SDs, 0 SdLazy, 351 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=5, 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, 7 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 14 NumberOfFragments, 72 HoareAnnotationTreeSize, 7 FomulaSimplifications, 80 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 117 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 12069 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 27/27 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...