/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test28-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 17:27:16,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 17:27:16,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 17:27:16,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 17:27:16,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 17:27:16,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 17:27:16,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 17:27:16,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 17:27:16,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 17:27:16,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 17:27:16,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 17:27:16,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 17:27:16,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 17:27:16,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 17:27:16,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 17:27:16,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 17:27:16,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 17:27:16,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 17:27:16,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 17:27:16,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 17:27:16,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 17:27:16,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 17:27:16,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 17:27:16,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 17:27:16,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 17:27:16,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 17:27:16,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 17:27:16,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 17:27:16,303 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 17:27:16,316 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 17:27:16,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 17:27:16,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 17:27:16,319 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 17:27:16,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 17:27:16,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 17:27:16,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 17:27:16,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 17:27:16,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 17:27:16,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 17:27:16,321 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 17:27:16,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 17:27:16,321 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 17:27:16,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 17:27:16,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 17:27:16,324 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 17:27:16,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 17:27:16,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 17:27:16,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:27:16,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 17:27:16,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 17:27:16,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 17:27:16,325 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-07-17 17:27:16,579 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 17:27:16,591 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 17:27:16,594 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 17:27:16,596 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 17:27:16,596 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 17:27:16,597 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test28-2.c [2020-07-17 17:27:16,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/205a988f2/8877e1e0234943babdd7c06b98089fb4/FLAG7f4282068 [2020-07-17 17:27:17,081 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 17:27:17,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test28-2.c [2020-07-17 17:27:17,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/205a988f2/8877e1e0234943babdd7c06b98089fb4/FLAG7f4282068 [2020-07-17 17:27:17,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/205a988f2/8877e1e0234943babdd7c06b98089fb4 [2020-07-17 17:27:17,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 17:27:17,500 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 17:27:17,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 17:27:17,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 17:27:17,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 17:27:17,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:27:17" (1/1) ... [2020-07-17 17:27:17,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38cf0ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:27:17, skipping insertion in model container [2020-07-17 17:27:17,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:27:17" (1/1) ... [2020-07-17 17:27:17,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 17:27:17,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 17:27:17,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:27:17,724 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 17:27:17,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:27:17,753 INFO L208 MainTranslator]: Completed translation [2020-07-17 17:27:17,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:27:17 WrapperNode [2020-07-17 17:27:17,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 17:27:17,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 17:27:17,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 17:27:17,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 17:27:17,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:27:17" (1/1) ... [2020-07-17 17:27:17,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:27:17" (1/1) ... [2020-07-17 17:27:17,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:27:17" (1/1) ... [2020-07-17 17:27:17,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:27:17" (1/1) ... [2020-07-17 17:27:17,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:27:17" (1/1) ... [2020-07-17 17:27:17,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:27:17" (1/1) ... [2020-07-17 17:27:17,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:27:17" (1/1) ... [2020-07-17 17:27:17,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 17:27:17,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 17:27:17,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 17:27:17,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 17:27:17,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:27:17" (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 17:27:17,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 17:27:17,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 17:27:17,943 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 17:27:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 17:27:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 17:27:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 17:27:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 17:27:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 17:27:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 17:27:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 17:27:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 17:27:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 17:27:18,171 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 17:27:18,171 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 17:27:18,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:27:18 BoogieIcfgContainer [2020-07-17 17:27:18,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 17:27:18,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 17:27:18,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 17:27:18,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 17:27:18,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 05:27:17" (1/3) ... [2020-07-17 17:27:18,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff51c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:27:18, skipping insertion in model container [2020-07-17 17:27:18,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:27:17" (2/3) ... [2020-07-17 17:27:18,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff51c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:27:18, skipping insertion in model container [2020-07-17 17:27:18,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:27:18" (3/3) ... [2020-07-17 17:27:18,183 INFO L109 eAbstractionObserver]: Analyzing ICFG test28-2.c [2020-07-17 17:27:18,194 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 17:27:18,201 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 17:27:18,218 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 17:27:18,243 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 17:27:18,244 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 17:27:18,244 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 17:27:18,244 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 17:27:18,244 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 17:27:18,244 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 17:27:18,245 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 17:27:18,245 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 17:27:18,265 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-07-17 17:27:18,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-17 17:27:18,277 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:27:18,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:27:18,278 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:27:18,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:27:18,286 INFO L82 PathProgramCache]: Analyzing trace with hash -374520961, now seen corresponding path program 1 times [2020-07-17 17:27:18,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:27:18,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007711749] [2020-07-17 17:27:18,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:27:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:27:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:27:18,527 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 17:27:18,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007711749] [2020-07-17 17:27:18,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:27:18,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 17:27:18,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565092718] [2020-07-17 17:27:18,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 17:27:18,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:27:18,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 17:27:18,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:27:18,554 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 4 states. [2020-07-17 17:27:18,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:27:18,674 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-07-17 17:27:18,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 17:27:18,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-17 17:27:18,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:27:18,687 INFO L225 Difference]: With dead ends: 54 [2020-07-17 17:27:18,687 INFO L226 Difference]: Without dead ends: 29 [2020-07-17 17:27:18,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:27:18,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-17 17:27:18,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-17 17:27:18,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-17 17:27:18,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-07-17 17:27:18,734 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 24 [2020-07-17 17:27:18,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:27:18,734 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-07-17 17:27:18,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 17:27:18,735 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-07-17 17:27:18,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-17 17:27:18,736 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:27:18,736 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-17 17:27:18,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 17:27:18,737 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:27:18,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:27:18,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1400624444, now seen corresponding path program 1 times [2020-07-17 17:27:18,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:27:18,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141264058] [2020-07-17 17:27:18,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:27:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:27:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:27:18,852 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 17:27:18,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141264058] [2020-07-17 17:27:18,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:27:18,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 17:27:18,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043193352] [2020-07-17 17:27:18,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 17:27:18,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:27:18,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 17:27:18,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-17 17:27:18,857 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 7 states. [2020-07-17 17:27:19,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:27:19,002 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2020-07-17 17:27:19,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 17:27:19,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-07-17 17:27:19,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:27:19,005 INFO L225 Difference]: With dead ends: 52 [2020-07-17 17:27:19,005 INFO L226 Difference]: Without dead ends: 42 [2020-07-17 17:27:19,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-07-17 17:27:19,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-17 17:27:19,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2020-07-17 17:27:19,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-17 17:27:19,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-07-17 17:27:19,020 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 26 [2020-07-17 17:27:19,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:27:19,021 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-07-17 17:27:19,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 17:27:19,021 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-07-17 17:27:19,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-17 17:27:19,022 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:27:19,022 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-17 17:27:19,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 17:27:19,023 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:27:19,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:27:19,024 INFO L82 PathProgramCache]: Analyzing trace with hash -316312164, now seen corresponding path program 1 times [2020-07-17 17:27:19,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:27:19,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445404927] [2020-07-17 17:27:19,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:27:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:27:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:27:19,284 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 17:27:19,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445404927] [2020-07-17 17:27:19,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:27:19,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 17:27:19,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776719341] [2020-07-17 17:27:19,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 17:27:19,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:27:19,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 17:27:19,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-17 17:27:19,291 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 9 states. [2020-07-17 17:27:19,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:27:19,466 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-07-17 17:27:19,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 17:27:19,467 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-07-17 17:27:19,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:27:19,468 INFO L225 Difference]: With dead ends: 42 [2020-07-17 17:27:19,468 INFO L226 Difference]: Without dead ends: 28 [2020-07-17 17:27:19,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-07-17 17:27:19,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-17 17:27:19,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-07-17 17:27:19,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-17 17:27:19,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-07-17 17:27:19,477 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2020-07-17 17:27:19,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:27:19,477 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-07-17 17:27:19,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 17:27:19,478 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-07-17 17:27:19,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-17 17:27:19,479 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:27:19,479 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-17 17:27:19,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 17:27:19,479 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:27:19,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:27:19,480 INFO L82 PathProgramCache]: Analyzing trace with hash -497457956, now seen corresponding path program 1 times [2020-07-17 17:27:19,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:27:19,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605412090] [2020-07-17 17:27:19,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:27:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:27:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:27:19,556 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 17:27:19,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605412090] [2020-07-17 17:27:19,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:27:19,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 17:27:19,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836759047] [2020-07-17 17:27:19,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 17:27:19,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:27:19,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 17:27:19,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-17 17:27:19,558 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 8 states. [2020-07-17 17:27:19,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:27:19,664 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-07-17 17:27:19,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 17:27:19,664 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-07-17 17:27:19,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:27:19,665 INFO L225 Difference]: With dead ends: 28 [2020-07-17 17:27:19,665 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 17:27:19,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-07-17 17:27:19,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 17:27:19,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 17:27:19,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 17:27:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 17:27:19,667 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-07-17 17:27:19,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:27:19,667 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 17:27:19,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 17:27:19,668 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 17:27:19,668 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 17:27:19,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 17:27:19,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 17:27:20,118 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 17:27:20,119 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-07-17 17:27:20,119 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 17:27:20,119 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-07-17 17:27:20,119 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-17 17:27:20,120 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-17 17:27:20,120 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 17:27:20,120 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 17:27:20,120 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-17 17:27:20,120 INFO L264 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: false [2020-07-17 17:27:20,121 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 10 28) the Hoare annotation is: true [2020-07-17 17:27:20,121 INFO L264 CegarLoopResult]: At program point L15(lines 15 19) the Hoare annotation is: (let ((.cse0 (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) (.cse1 (= 0 |main_~#d2~0.offset|)) (.cse2 (= 1 (select |#valid| |main_~#d1~0.base|)))) (or (and (= |main_~#d2~0.offset| main_~pd~0.offset) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse2 (not (= main_~pd~0.base |main_~#d2~0.base|))))) [2020-07-17 17:27:20,121 INFO L271 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-07-17 17:27:20,122 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (let ((.cse3 (= main_~pd~0.base |main_~#d2~0.base|)) (.cse0 (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) (.cse1 (= 0 |main_~#d2~0.offset|)) (.cse2 (= 1 (select |#valid| |main_~#d1~0.base|)))) (or (and .cse0 .cse1 .cse2 (not |main_#t~short3|) (not .cse3)) (and (= |main_~#d2~0.offset| main_~pd~0.offset) (= 0 (select (select |#memory_int| |main_~#d2~0.base|) (+ |main_~#d2~0.offset| 4))) .cse3 .cse0 .cse1 .cse2))) [2020-07-17 17:27:20,122 INFO L264 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: (and (= |main_~#d2~0.offset| main_~pd~0.offset) (= 0 (select (select |#memory_int| |main_~#d2~0.base|) (+ |main_~#d2~0.offset| 4))) (= main_~pd~0.base |main_~#d2~0.base|) (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) (= 0 |main_~#d2~0.offset|) (= 1 (select |#valid| |main_~#d1~0.base|))) [2020-07-17 17:27:20,122 INFO L264 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (and (= |main_~#d2~0.offset| main_~pd~0.offset) (= 0 (select (select |#memory_int| |main_~#d2~0.base|) (+ |main_~#d2~0.offset| 4))) (= 0 |main_#t~mem2|) (= main_~pd~0.base |main_~#d2~0.base|) (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) (= 0 |main_~#d2~0.offset|) (= 1 (select |#valid| |main_~#d1~0.base|))) [2020-07-17 17:27:20,123 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) (= 0 |main_~#d2~0.offset|) (= 1 (select |#valid| |main_~#d1~0.base|)) (not (= main_~pd~0.base |main_~#d2~0.base|))) [2020-07-17 17:27:20,123 INFO L264 CegarLoopResult]: At program point L20-4(lines 20 22) the Hoare annotation is: (not |main_#t~short3|) [2020-07-17 17:27:20,123 INFO L264 CegarLoopResult]: At program point L20-5(line 20) the Hoare annotation is: false [2020-07-17 17:27:20,123 INFO L264 CegarLoopResult]: At program point L20-6(line 20) the Hoare annotation is: false [2020-07-17 17:27:20,123 INFO L264 CegarLoopResult]: At program point L20-7(line 20) the Hoare annotation is: (not |main_#t~short3|) [2020-07-17 17:27:20,124 INFO L264 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: (= 1 (select |#valid| |main_~#d1~0.base|)) [2020-07-17 17:27:20,124 INFO L271 CegarLoopResult]: At program point L20-8(line 20) the Hoare annotation is: true [2020-07-17 17:27:20,124 INFO L264 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: (and (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) (= 0 |main_~#d2~0.offset|) (= 1 (select |#valid| |main_~#d1~0.base|))) [2020-07-17 17:27:20,124 INFO L271 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-07-17 17:27:20,124 INFO L271 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-07-17 17:27:20,125 INFO L271 CegarLoopResult]: At program point L12-4(line 12) the Hoare annotation is: true [2020-07-17 17:27:20,125 INFO L271 CegarLoopResult]: At program point L12-5(line 12) the Hoare annotation is: true [2020-07-17 17:27:20,125 INFO L264 CegarLoopResult]: At program point L12-6(line 12) the Hoare annotation is: false [2020-07-17 17:27:20,125 INFO L264 CegarLoopResult]: At program point L12-7(line 12) the Hoare annotation is: false [2020-07-17 17:27:20,125 INFO L264 CegarLoopResult]: At program point L12-8(line 12) the Hoare annotation is: false [2020-07-17 17:27:20,126 INFO L264 CegarLoopResult]: At program point L12-9(line 12) the Hoare annotation is: false [2020-07-17 17:27:20,126 INFO L264 CegarLoopResult]: At program point L21(lines 11 28) the Hoare annotation is: false [2020-07-17 17:27:20,126 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) (= 0 |main_~#d2~0.offset|) (= 1 (select |#valid| |main_~#d1~0.base|))) [2020-07-17 17:27:20,126 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 10 28) the Hoare annotation is: true [2020-07-17 17:27:20,127 INFO L264 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: (and (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) (= 0 |main_~#d2~0.offset|) (= 1 (select |#valid| |main_~#d1~0.base|))) [2020-07-17 17:27:20,127 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) the Hoare annotation is: false [2020-07-17 17:27:20,127 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 10 28) the Hoare annotation is: (= |#valid| |old(#valid)|) [2020-07-17 17:27:20,127 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse0 (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) (.cse1 (= 0 |main_~#d2~0.offset|)) (.cse2 (= 1 (select |#valid| |main_~#d1~0.base|)))) (or (and (= |main_~#d2~0.offset| main_~pd~0.offset) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse2 (not (= main_~pd~0.base |main_~#d2~0.base|))))) [2020-07-17 17:27:20,128 INFO L264 CegarLoopResult]: At program point L18-1(lines 15 19) the Hoare annotation is: (let ((.cse0 (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) (.cse1 (= 0 |main_~#d2~0.offset|)) (.cse2 (= 1 (select |#valid| |main_~#d1~0.base|)))) (or (and .cse0 .cse1 .cse2 (not (= main_~pd~0.base |main_~#d2~0.base|))) (and (= |main_~#d2~0.offset| main_~pd~0.offset) (= 0 (select (select |#memory_int| |main_~#d2~0.base|) (+ |main_~#d2~0.offset| 4))) .cse0 .cse1 .cse2))) [2020-07-17 17:27:20,128 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (and (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) (= 0 |main_~#d2~0.offset|) (= 1 (select |#valid| |main_~#d1~0.base|))) [2020-07-17 17:27:20,128 INFO L264 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: (and (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) (= 0 |main_~#d2~0.offset|) (= 1 (select |#valid| |main_~#d1~0.base|))) [2020-07-17 17:27:20,128 INFO L264 CegarLoopResult]: At program point L14-3(line 14) the Hoare annotation is: (and (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) (= 0 |main_~#d2~0.offset|) (= 1 (select |#valid| |main_~#d1~0.base|))) [2020-07-17 17:27:20,129 INFO L264 CegarLoopResult]: At program point L14-4(line 14) the Hoare annotation is: (let ((.cse0 (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) (.cse1 (= 0 |main_~#d2~0.offset|)) (.cse2 (= 1 (select |#valid| |main_~#d1~0.base|)))) (or (and .cse0 .cse1 (= |main_#t~ite1.offset| 0) .cse2) (and .cse0 .cse1 .cse2 (not (= |main_#t~ite1.base| |main_~#d2~0.base|))))) [2020-07-17 17:27:20,129 INFO L264 CegarLoopResult]: At program point L14-5(line 14) the Hoare annotation is: (let ((.cse3 (= main_~pd~0.base |main_~#d2~0.base|)) (.cse2 (= |main_#t~ite1.base| |main_~#d2~0.base|)) (.cse0 (= 0 |main_~#d2~0.offset|)) (.cse1 (= 1 (select |#valid| |main_~#d1~0.base|)))) (or (and (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) .cse0 .cse1 (not .cse2) (not .cse3)) (and (= |main_~#d2~0.offset| main_~pd~0.offset) .cse3 .cse2 .cse0 (= |main_#t~ite1.offset| 0) .cse1 (not (= |main_~#d1~0.base| |main_#t~ite1.base|))))) [2020-07-17 17:27:20,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 05:27:20 BoogieIcfgContainer [2020-07-17 17:27:20,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 17:27:20,145 INFO L168 Benchmark]: Toolchain (without parser) took 2645.48 ms. Allocated memory was 138.4 MB in the beginning and 234.4 MB in the end (delta: 95.9 MB). Free memory was 103.6 MB in the beginning and 84.5 MB in the end (delta: 19.1 MB). Peak memory consumption was 115.1 MB. Max. memory is 7.1 GB. [2020-07-17 17:27:20,146 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 138.4 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 17:27:20,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.13 ms. Allocated memory is still 138.4 MB. Free memory was 103.2 MB in the beginning and 93.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-17 17:27:20,148 INFO L168 Benchmark]: Boogie Preprocessor took 125.17 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 93.3 MB in the beginning and 181.4 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-17 17:27:20,149 INFO L168 Benchmark]: RCFGBuilder took 295.21 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 166.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-07-17 17:27:20,150 INFO L168 Benchmark]: TraceAbstraction took 1966.00 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 165.2 MB in the beginning and 84.5 MB in the end (delta: 80.7 MB). Peak memory consumption was 111.1 MB. Max. memory is 7.1 GB. [2020-07-17 17:27:20,153 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 138.4 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 253.13 ms. Allocated memory is still 138.4 MB. Free memory was 103.2 MB in the beginning and 93.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.17 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 93.3 MB in the beginning and 181.4 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 295.21 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 166.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1966.00 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 165.2 MB in the beginning and 84.5 MB in the end (delta: 80.7 MB). Peak memory consumption was 111.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 26]: 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: 11]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 10]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 94 SDtfs, 132 SDslu, 245 SDs, 0 SdLazy, 230 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred 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, 4 MinimizatonAttempts, 10 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 45 LocationsWithAnnotation, 45 PreInvPairs, 62 NumberOfFragments, 441 HoareAnnotationTreeSize, 45 FomulaSimplifications, 211 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 45 FomulaSimplificationsInter, 29 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 6484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...