/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/test04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 22:06:01,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 22:06:01,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 22:06:01,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-04 22:06:01,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 22:06:01,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 22:06:01,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 22:06:01,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 22:06:01,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 22:06:01,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 22:06:01,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 22:06:01,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 22:06:01,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 22:06:01,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 22:06:01,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 22:06:01,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 22:06:01,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 22:06:01,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 22:06:01,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 22:06:01,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 22:06:01,651 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 22:06:01,662 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 22:06:01,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 22:06:01,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 22:06:01,664 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 22:06:01,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 22:06:01,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 22:06:01,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 22:06:01,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 22:06:01,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 22:06:01,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 22:06:01,665 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 22:06:01,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 22:06:01,666 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 22:06:01,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 22:06:01,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 22:06:01,667 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 22:06:01,667 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 22:06:01,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 22:06:01,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 22:06:01,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 22:06:01,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 22:06:01,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 22:06:01,668 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 [2020-09-04 22:06:02,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 22:06:02,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 22:06:02,115 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 22:06:02,117 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 22:06:02,117 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 22:06:02,119 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test04.c [2020-09-04 22:06:02,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5a1ed051/7c145aafb8384af39a57564518a1e744/FLAG8f14333d3 [2020-09-04 22:06:02,752 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 22:06:02,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test04.c [2020-09-04 22:06:02,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5a1ed051/7c145aafb8384af39a57564518a1e744/FLAG8f14333d3 [2020-09-04 22:06:03,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5a1ed051/7c145aafb8384af39a57564518a1e744 [2020-09-04 22:06:03,110 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 22:06:03,112 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 22:06:03,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 22:06:03,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 22:06:03,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 22:06:03,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:06:03" (1/1) ... [2020-09-04 22:06:03,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e62aa9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:03, skipping insertion in model container [2020-09-04 22:06:03,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:06:03" (1/1) ... [2020-09-04 22:06:03,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 22:06:03,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 22:06:03,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:06:03,385 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 22:06:03,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:06:03,423 INFO L208 MainTranslator]: Completed translation [2020-09-04 22:06:03,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:03 WrapperNode [2020-09-04 22:06:03,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 22:06:03,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 22:06:03,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 22:06:03,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 22:06:03,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:03" (1/1) ... [2020-09-04 22:06:03,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:03" (1/1) ... [2020-09-04 22:06:03,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:03" (1/1) ... [2020-09-04 22:06:03,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:03" (1/1) ... [2020-09-04 22:06:03,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:03" (1/1) ... [2020-09-04 22:06:03,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:03" (1/1) ... [2020-09-04 22:06:03,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:03" (1/1) ... [2020-09-04 22:06:03,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 22:06:03,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 22:06:03,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 22:06:03,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 22:06:03,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:03" (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 [2020-09-04 22:06:03,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 22:06:03,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 22:06:03,632 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-09-04 22:06:03,633 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 22:06:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 22:06:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-09-04 22:06:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 22:06:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 22:06:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 22:06:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 22:06:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 22:06:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 22:06:03,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 22:06:03,890 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 22:06:03,890 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 22:06:03,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:06:03 BoogieIcfgContainer [2020-09-04 22:06:03,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 22:06:03,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 22:06:03,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 22:06:03,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 22:06:03,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 10:06:03" (1/3) ... [2020-09-04 22:06:03,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc5f040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:06:03, skipping insertion in model container [2020-09-04 22:06:03,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:03" (2/3) ... [2020-09-04 22:06:03,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc5f040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:06:03, skipping insertion in model container [2020-09-04 22:06:03,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:06:03" (3/3) ... [2020-09-04 22:06:03,906 INFO L109 eAbstractionObserver]: Analyzing ICFG test04.c [2020-09-04 22:06:03,920 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 22:06:03,931 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 22:06:03,971 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 22:06:04,013 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 22:06:04,013 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 22:06:04,013 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 22:06:04,014 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 22:06:04,014 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 22:06:04,014 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 22:06:04,014 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 22:06:04,015 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 22:06:04,035 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-09-04 22:06:04,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 22:06:04,048 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:06:04,049 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] [2020-09-04 22:06:04,050 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:06:04,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:06:04,056 INFO L82 PathProgramCache]: Analyzing trace with hash -603365198, now seen corresponding path program 1 times [2020-09-04 22:06:04,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:06:04,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287148857] [2020-09-04 22:06:04,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:06:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:04,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:06:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:04,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-04 22:06:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:04,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:06:04,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287148857] [2020-09-04 22:06:04,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:06:04,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 22:06:04,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23959847] [2020-09-04 22:06:04,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 22:06:04,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:06:04,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 22:06:04,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-04 22:06:04,638 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 13 states. [2020-09-04 22:06:05,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:06:05,120 INFO L93 Difference]: Finished difference Result 44 states and 43 transitions. [2020-09-04 22:06:05,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 22:06:05,123 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2020-09-04 22:06:05,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:06:05,132 INFO L225 Difference]: With dead ends: 44 [2020-09-04 22:06:05,132 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 22:06:05,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2020-09-04 22:06:05,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 22:06:05,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 22:06:05,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 22:06:05,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 22:06:05,170 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-09-04 22:06:05,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:06:05,170 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 22:06:05,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 22:06:05,171 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 22:06:05,171 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 22:06:05,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 22:06:05,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 22:06:05,543 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 22:06:05,543 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-09-04 22:06:05,544 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 22:06:05,544 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-04 22:06:05,544 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 22:06:05,545 INFO L264 CegarLoopResult]: At program point fEXIT(lines 4 6) the Hoare annotation is: (and (= |f_#in~p2.base| f_~p2.base) (or (= |f_#in~p1.base| |f_#in~p2.base|) (<= |f_#res| 0)) (<= 0 |f_#res|) (= |f_#in~p1.base| f_~p1.base)) [2020-09-04 22:06:05,545 INFO L271 CegarLoopResult]: At program point fENTRY(lines 4 6) the Hoare annotation is: true [2020-09-04 22:06:05,545 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (and (= |f_#in~p2.base| f_~p2.base) (= |f_#in~p1.base| f_~p1.base)) [2020-09-04 22:06:05,545 INFO L264 CegarLoopResult]: At program point L4(lines 4 6) the Hoare annotation is: (= |f_#in~p1.base| f_~p1.base) [2020-09-04 22:06:05,546 INFO L264 CegarLoopResult]: At program point fFINAL(lines 4 6) the Hoare annotation is: (and (= |f_#in~p2.base| f_~p2.base) (or (= |f_#in~p1.base| |f_#in~p2.base|) (<= |f_#res| 0)) (<= 0 |f_#res|) (= |f_#in~p1.base| f_~p1.base)) [2020-09-04 22:06:05,546 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 22:06:05,546 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 22:06:05,546 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 22:06:05,546 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 22:06:05,546 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 8 24) the Hoare annotation is: (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) [2020-09-04 22:06:05,547 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: false [2020-09-04 22:06:05,547 INFO L264 CegarLoopResult]: At program point L17(lines 8 24) the Hoare annotation is: false [2020-09-04 22:06:05,547 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 8 24) the Hoare annotation is: (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) [2020-09-04 22:06:05,547 INFO L264 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (= (select |#valid| |main_~#a~0.base|) 1) [2020-09-04 22:06:05,548 INFO L264 CegarLoopResult]: At program point L9-1(line 9) the Hoare annotation is: (and (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1)) [2020-09-04 22:06:05,548 INFO L264 CegarLoopResult]: At program point L9-2(line 9) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2020-09-04 22:06:05,548 INFO L264 CegarLoopResult]: At program point L9-3(line 9) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) (= main_~p1~0.base |main_~#a~0.base|)) [2020-09-04 22:06:05,548 INFO L264 CegarLoopResult]: At program point L9-4(line 9) the Hoare annotation is: (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) [2020-09-04 22:06:05,549 INFO L264 CegarLoopResult]: At program point L9-5(line 9) the Hoare annotation is: (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) [2020-09-04 22:06:05,549 INFO L264 CegarLoopResult]: At program point L9-6(line 9) the Hoare annotation is: false [2020-09-04 22:06:05,549 INFO L264 CegarLoopResult]: At program point L9-7(line 9) the Hoare annotation is: false [2020-09-04 22:06:05,549 INFO L264 CegarLoopResult]: At program point L9-8(line 9) the Hoare annotation is: false [2020-09-04 22:06:05,550 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 22) the Hoare annotation is: false [2020-09-04 22:06:05,550 INFO L264 CegarLoopResult]: At program point L9-9(line 9) the Hoare annotation is: false [2020-09-04 22:06:05,550 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 8 24) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-04 22:06:05,550 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2020-09-04 22:06:05,551 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2020-09-04 22:06:05,551 INFO L264 CegarLoopResult]: At program point L16-1(lines 16 18) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) (= |main_#t~mem1| 0) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2020-09-04 22:06:05,551 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2020-09-04 22:06:05,551 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: false [2020-09-04 22:06:05,552 INFO L264 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: (and (= |main_#t~ret0| 0) (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2020-09-04 22:06:05,552 INFO L264 CegarLoopResult]: At program point L16-3(line 16) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) (= |main_#t~mem1| 0) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2020-09-04 22:06:05,552 INFO L264 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: (and (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2020-09-04 22:06:05,553 INFO L264 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: (and (= |main_#t~ret0| 0) (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2020-09-04 22:06:05,553 INFO L264 CegarLoopResult]: At program point L14-3(line 14) the Hoare annotation is: (and (= |main_#t~ret0| 0) (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2020-09-04 22:06:05,579 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 22:06:05,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 10:06:05 BoogieIcfgContainer [2020-09-04 22:06:05,583 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 22:06:05,587 INFO L168 Benchmark]: Toolchain (without parser) took 2473.11 ms. Allocated memory was 140.5 MB in the beginning and 234.4 MB in the end (delta: 93.8 MB). Free memory was 103.6 MB in the beginning and 143.8 MB in the end (delta: -40.2 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. [2020-09-04 22:06:05,588 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 22:06:05,589 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.89 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 93.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-04 22:06:05,590 INFO L168 Benchmark]: Boogie Preprocessor took 116.24 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 93.6 MB in the beginning and 183.0 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-09-04 22:06:05,591 INFO L168 Benchmark]: RCFGBuilder took 355.31 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 168.0 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-09-04 22:06:05,592 INFO L168 Benchmark]: TraceAbstraction took 1684.68 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 167.4 MB in the beginning and 143.8 MB in the end (delta: 23.6 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2020-09-04 22:06:05,597 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 309.89 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 93.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.24 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 93.6 MB in the beginning and 183.0 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 355.31 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 168.0 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1684.68 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 167.4 MB in the beginning and 143.8 MB in the end (delta: 23.6 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: 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: 8]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 4]: Procedure Contract for f Derived contract for procedure f: ((p2 == p2 && (p1 == p2 || \result <= 0)) && 0 <= \result) && p1 == p1 - ProcedureContractResult [Line: 8]: Procedure Contract for main [2020-09-04 22:06:05,611 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 22:06:05,612 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived contract for procedure main: unknown-#memory_int-unknown[p1][p1] == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 50 SDslu, 127 SDs, 0 SdLazy, 129 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 40 LocationsWithAnnotation, 40 PreInvPairs, 44 NumberOfFragments, 392 HoareAnnotationTreeSize, 40 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 40 FomulaSimplificationsInter, 53 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 2737 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...