/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/oomInt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 22:05:40,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 22:05:40,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 22:05:40,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 22:05:40,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 22:05:40,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 22:05:40,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 22:05:40,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 22:05:40,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 22:05:40,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 22:05:40,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 22:05:40,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 22:05:40,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 22:05:40,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 22:05:40,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 22:05:40,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 22:05:40,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 22:05:40,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 22:05:40,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 22:05:40,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 22:05:40,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 22:05:40,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 22:05:40,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 22:05:40,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 22:05:40,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 22:05:40,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 22:05:40,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 22:05:40,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 22:05:40,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 22:05:40,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 22:05:40,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 22:05:40,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 22:05:40,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 22:05:40,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 22:05:40,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 22:05:40,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 22:05:40,142 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 22:05:40,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 22:05:40,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 22:05:40,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 22:05:40,158 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 22:05:40,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 22:05:40,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 22:05:40,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 22:05:40,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 22:05:40,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 22:05:40,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 22:05:40,159 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 22:05:40,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 22:05:40,160 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 22:05:40,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 22:05:40,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 22:05:40,160 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 22:05:40,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 22:05:40,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 22:05:40,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 22:05:40,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 22:05:40,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 22:05:40,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 22:05:40,162 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 22:05:40,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 22:05:40,725 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 22:05:40,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 22:05:40,734 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 22:05:40,734 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 22:05:40,737 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/oomInt.i [2020-09-04 22:05:40,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ce3a5fcb/f526614b54184a119cb9f01ac0b0f5af/FLAG6efad566e [2020-09-04 22:05:41,404 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 22:05:41,405 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/oomInt.i [2020-09-04 22:05:41,415 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ce3a5fcb/f526614b54184a119cb9f01ac0b0f5af/FLAG6efad566e [2020-09-04 22:05:41,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ce3a5fcb/f526614b54184a119cb9f01ac0b0f5af [2020-09-04 22:05:41,775 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 22:05:41,778 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 22:05:41,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 22:05:41,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 22:05:41,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 22:05:41,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:05:41" (1/1) ... [2020-09-04 22:05:41,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b8ea72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:41, skipping insertion in model container [2020-09-04 22:05:41,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:05:41" (1/1) ... [2020-09-04 22:05:41,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 22:05:41,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 22:05:42,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:05:42,085 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 22:05:42,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:05:42,130 INFO L208 MainTranslator]: Completed translation [2020-09-04 22:05:42,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:42 WrapperNode [2020-09-04 22:05:42,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 22:05:42,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 22:05:42,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 22:05:42,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 22:05:42,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:42" (1/1) ... [2020-09-04 22:05:42,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:42" (1/1) ... [2020-09-04 22:05:42,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:42" (1/1) ... [2020-09-04 22:05:42,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:42" (1/1) ... [2020-09-04 22:05:42,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:42" (1/1) ... [2020-09-04 22:05:42,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:42" (1/1) ... [2020-09-04 22:05:42,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:42" (1/1) ... [2020-09-04 22:05:42,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 22:05:42,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 22:05:42,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 22:05:42,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 22:05:42,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:42" (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 22:05:42,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 22:05:42,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 22:05:42,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 22:05:42,359 INFO L138 BoogieDeclarations]: Found implementation of procedure abs_int [2020-09-04 22:05:42,359 INFO L138 BoogieDeclarations]: Found implementation of procedure firstFunction [2020-09-04 22:05:42,359 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 22:05:42,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 22:05:42,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 22:05:42,359 INFO L130 BoogieDeclarations]: Found specification of procedure abs_int [2020-09-04 22:05:42,360 INFO L130 BoogieDeclarations]: Found specification of procedure firstFunction [2020-09-04 22:05:42,360 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 22:05:42,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 22:05:42,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 22:05:42,690 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 22:05:42,691 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 22:05:42,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:05:42 BoogieIcfgContainer [2020-09-04 22:05:42,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 22:05:42,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 22:05:42,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 22:05:42,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 22:05:42,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 10:05:41" (1/3) ... [2020-09-04 22:05:42,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b287531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:05:42, skipping insertion in model container [2020-09-04 22:05:42,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:05:42" (2/3) ... [2020-09-04 22:05:42,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b287531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:05:42, skipping insertion in model container [2020-09-04 22:05:42,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:05:42" (3/3) ... [2020-09-04 22:05:42,710 INFO L109 eAbstractionObserver]: Analyzing ICFG oomInt.i [2020-09-04 22:05:42,727 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 22:05:42,740 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 22:05:42,768 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 22:05:42,808 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 22:05:42,808 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 22:05:42,809 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 22:05:42,809 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 22:05:42,809 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 22:05:42,809 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 22:05:42,809 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 22:05:42,809 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 22:05:42,835 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-09-04 22:05:42,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 22:05:42,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:05:42,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:05:42,861 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:05:42,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:05:42,869 INFO L82 PathProgramCache]: Analyzing trace with hash 531924990, now seen corresponding path program 1 times [2020-09-04 22:05:42,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:05:42,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063481752] [2020-09-04 22:05:42,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:05:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:43,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:05:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:43,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:05:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:43,326 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 22:05:43,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063481752] [2020-09-04 22:05:43,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:05:43,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 22:05:43,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947968380] [2020-09-04 22:05:43,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 22:05:43,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:05:43,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 22:05:43,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-04 22:05:43,365 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 9 states. [2020-09-04 22:05:43,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:05:43,817 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-04 22:05:43,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 22:05:43,822 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-04 22:05:43,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:05:43,845 INFO L225 Difference]: With dead ends: 55 [2020-09-04 22:05:43,846 INFO L226 Difference]: Without dead ends: 20 [2020-09-04 22:05:43,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-09-04 22:05:43,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-09-04 22:05:43,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-09-04 22:05:43,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-09-04 22:05:43,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2020-09-04 22:05:43,955 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 19 [2020-09-04 22:05:43,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:05:43,956 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2020-09-04 22:05:43,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 22:05:43,957 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2020-09-04 22:05:43,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 22:05:43,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:05:43,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:05:43,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 22:05:43,963 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:05:43,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:05:43,964 INFO L82 PathProgramCache]: Analyzing trace with hash 839962558, now seen corresponding path program 1 times [2020-09-04 22:05:43,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:05:43,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249987853] [2020-09-04 22:05:43,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:05:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:44,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:05:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:44,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 22:05:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:05:44,127 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 22:05:44,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249987853] [2020-09-04 22:05:44,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:05:44,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 22:05:44,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010589655] [2020-09-04 22:05:44,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 22:05:44,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:05:44,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 22:05:44,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 22:05:44,141 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand 5 states. [2020-09-04 22:05:44,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:05:44,198 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2020-09-04 22:05:44,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 22:05:44,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-04 22:05:44,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:05:44,200 INFO L225 Difference]: With dead ends: 20 [2020-09-04 22:05:44,200 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 22:05:44,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-04 22:05:44,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 22:05:44,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 22:05:44,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 22:05:44,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 22:05:44,203 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-04 22:05:44,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:05:44,204 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 22:05:44,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 22:05:44,204 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 22:05:44,204 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 22:05:44,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 22:05:44,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 22:05:44,546 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 22:05:44,547 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~p~0 |old(~p~0)|) [2020-09-04 22:05:44,547 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 22:05:44,547 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 22:05:44,548 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 22:05:44,548 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 22:05:44,548 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 22:05:44,548 INFO L264 CegarLoopResult]: At program point abs_intEXIT(lines 16 25) the Hoare annotation is: (let ((.cse0 (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0)))) (or (and .cse0 (<= 3 |abs_int_#res|)) (and (not (= (+ |abs_int_#in~i| 3) 0)) .cse0))) [2020-09-04 22:05:44,549 INFO L264 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (and (not (= (+ |abs_int_#in~i| 3) 0)) (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0))) [2020-09-04 22:05:44,549 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0)) [2020-09-04 22:05:44,549 INFO L271 CegarLoopResult]: At program point abs_intENTRY(lines 16 25) the Hoare annotation is: true [2020-09-04 22:05:44,549 INFO L264 CegarLoopResult]: At program point L18(lines 18 24) the Hoare annotation is: (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0)) [2020-09-04 22:05:44,550 INFO L264 CegarLoopResult]: At program point abs_intFINAL(lines 16 25) the Hoare annotation is: (let ((.cse0 (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0)))) (or (and .cse0 (<= 3 |abs_int_#res|)) (and (not (= (+ |abs_int_#in~i| 3) 0)) .cse0))) [2020-09-04 22:05:44,550 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (<= 1 ~p~0) [2020-09-04 22:05:44,550 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (= ~p~0 |old(~p~0)|) (<= 1 |firstFunction_#t~ret0|)) [2020-09-04 22:05:44,551 INFO L264 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: (and (= ~p~0 |old(~p~0)|) (<= 1 |firstFunction_#t~ret0|)) [2020-09-04 22:05:44,551 INFO L264 CegarLoopResult]: At program point firstFunctionENTRY(lines 27 31) the Hoare annotation is: (= ~p~0 |old(~p~0)|) [2020-09-04 22:05:44,551 INFO L264 CegarLoopResult]: At program point L29-2(line 29) the Hoare annotation is: (and (<= 1 |firstFunction_#t~ret0|) (<= 1 ~p~0)) [2020-09-04 22:05:44,551 INFO L271 CegarLoopResult]: At program point firstFunctionFINAL(lines 27 31) the Hoare annotation is: true [2020-09-04 22:05:44,551 INFO L271 CegarLoopResult]: At program point firstFunctionEXIT(lines 27 31) the Hoare annotation is: true [2020-09-04 22:05:44,552 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 33 36) the Hoare annotation is: (= ~p~0 |old(~p~0)|) [2020-09-04 22:05:44,552 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 33 36) the Hoare annotation is: true [2020-09-04 22:05:44,552 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 33 36) the Hoare annotation is: true [2020-09-04 22:05:44,552 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 12) the Hoare annotation is: true [2020-09-04 22:05:44,552 INFO L264 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~i| 0) (not (<= 1 ~p~0))) [2020-09-04 22:05:44,553 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 12) the Hoare annotation is: (or (not (<= 1 ~p~0)) (= |__VERIFIER_assert_#in~i| 0) (not (= __VERIFIER_assert_~i 0))) [2020-09-04 22:05:44,553 INFO L264 CegarLoopResult]: At program point L8(lines 8 11) the Hoare annotation is: (or (not (<= 1 ~p~0)) (= |__VERIFIER_assert_#in~i| 0) (not (= __VERIFIER_assert_~i 0))) [2020-09-04 22:05:44,553 INFO L264 CegarLoopResult]: At program point L8-2(lines 6 12) the Hoare annotation is: (or (not (<= 1 ~p~0)) (= |__VERIFIER_assert_#in~i| 0) (not (= __VERIFIER_assert_~i 0))) [2020-09-04 22:05:44,554 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~i| 0) (not (<= 1 ~p~0))) [2020-09-04 22:05:44,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 10:05:44 BoogieIcfgContainer [2020-09-04 22:05:44,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 22:05:44,586 INFO L168 Benchmark]: Toolchain (without parser) took 2806.72 ms. Allocated memory was 138.9 MB in the beginning and 235.4 MB in the end (delta: 96.5 MB). Free memory was 103.0 MB in the beginning and 178.9 MB in the end (delta: -75.9 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. [2020-09-04 22:05:44,587 INFO L168 Benchmark]: CDTParser took 1.89 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 22:05:44,588 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.34 ms. Allocated memory is still 138.9 MB. Free memory was 102.7 MB in the beginning and 93.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-04 22:05:44,589 INFO L168 Benchmark]: Boogie Preprocessor took 41.58 ms. Allocated memory is still 138.9 MB. Free memory was 93.4 MB in the beginning and 92.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-04 22:05:44,590 INFO L168 Benchmark]: RCFGBuilder took 522.28 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 91.9 MB in the beginning and 170.7 MB in the end (delta: -78.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-04 22:05:44,591 INFO L168 Benchmark]: TraceAbstraction took 1883.60 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 170.0 MB in the beginning and 178.9 MB in the end (delta: -8.9 MB). Peak memory consumption was 87.8 MB. Max. memory is 7.1 GB. [2020-09-04 22:05:44,596 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.89 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 350.34 ms. Allocated memory is still 138.9 MB. Free memory was 102.7 MB in the beginning and 93.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.58 ms. Allocated memory is still 138.9 MB. Free memory was 93.4 MB in the beginning and 92.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 522.28 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 91.9 MB in the beginning and 170.7 MB in the end (delta: -78.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1883.60 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 170.0 MB in the beginning and 178.9 MB in the end (delta: -8.9 MB). Peak memory consumption was 87.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: 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 - ProcedureContractResult [Line: 16]: Procedure Contract for abs_int Derived contract for procedure abs_int: ((\old(i) == i || i + 3 == 0) && 3 <= \result) || (!(\old(i) + 3 == 0) && (\old(i) == i || i + 3 == 0)) - ProcedureContractResult [Line: 27]: Procedure Contract for firstFunction Derived contract for procedure firstFunction: 1 - ProcedureContractResult [Line: 33]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: (!(1 <= p) || \old(i) == 0) || !(i == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 42 SDslu, 102 SDs, 0 SdLazy, 109 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 29 LocationsWithAnnotation, 35 PreInvPairs, 57 NumberOfFragments, 191 HoareAnnotationTreeSize, 35 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 29 FomulaSimplificationsInter, 76 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1998 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...