/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/loop-acceleration/const_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 23:02:03,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:02:03,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:02:03,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 23:02:03,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 23:02:03,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 23:02:03,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 23:02:03,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 23:02:03,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 23:02:03,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 23:02:03,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 23:02:03,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 23:02:03,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:02:03,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:02:03,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:02:03,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:02:03,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:02:03,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:02:03,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:02:03,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:02:03,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:02:03,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:02:03,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:02:03,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:02:03,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 23:02:03,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:02:03,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:02:03,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:02:03,493 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 23:02:03,507 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:02:03,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:02:03,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:02:03,512 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:02:03,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:02:03,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:02:03,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:02:03,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:02:03,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:02:03,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:02:03,513 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:02:03,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:02:03,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:02:03,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:02:03,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:02:03,515 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:02:03,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:02:03,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:02:03,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:02:03,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:02:03,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:02:03,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:02:03,517 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 [2020-08-22 23:02:03,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:02:03,851 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:02:03,856 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:02:03,857 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:02:03,858 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:02:03,858 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/const_1-1.c [2020-08-22 23:02:03,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85b5c2647/f175311eee5048a19f3f0bfc14d27594/FLAGa09941679 [2020-08-22 23:02:04,386 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:02:04,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/const_1-1.c [2020-08-22 23:02:04,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85b5c2647/f175311eee5048a19f3f0bfc14d27594/FLAGa09941679 [2020-08-22 23:02:04,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85b5c2647/f175311eee5048a19f3f0bfc14d27594 [2020-08-22 23:02:04,779 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:02:04,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:02:04,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:02:04,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:02:04,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:02:04,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:02:04" (1/1) ... [2020-08-22 23:02:04,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689e32b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:04, skipping insertion in model container [2020-08-22 23:02:04,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:02:04" (1/1) ... [2020-08-22 23:02:04,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:02:04,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:02:05,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:02:05,031 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:02:05,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:02:05,057 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:02:05,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:05 WrapperNode [2020-08-22 23:02:05,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:02:05,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:02:05,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:02:05,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:02:05,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:05" (1/1) ... [2020-08-22 23:02:05,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:05" (1/1) ... [2020-08-22 23:02:05,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:05" (1/1) ... [2020-08-22 23:02:05,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:05" (1/1) ... [2020-08-22 23:02:05,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:05" (1/1) ... [2020-08-22 23:02:05,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:05" (1/1) ... [2020-08-22 23:02:05,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:05" (1/1) ... [2020-08-22 23:02:05,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:02:05,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:02:05,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:02:05,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:02:05,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:05" (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 [2020-08-22 23:02:05,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:02:05,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:02:05,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 23:02:05,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:02:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:02:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:02:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:02:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:02:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:02:05,388 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:02:05,388 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 23:02:05,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:02:05 BoogieIcfgContainer [2020-08-22 23:02:05,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:02:05,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:02:05,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:02:05,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:02:05,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:02:04" (1/3) ... [2020-08-22 23:02:05,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bffa6a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:02:05, skipping insertion in model container [2020-08-22 23:02:05,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:02:05" (2/3) ... [2020-08-22 23:02:05,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bffa6a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:02:05, skipping insertion in model container [2020-08-22 23:02:05,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:02:05" (3/3) ... [2020-08-22 23:02:05,399 INFO L109 eAbstractionObserver]: Analyzing ICFG const_1-1.c [2020-08-22 23:02:05,410 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:02:05,417 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:02:05,431 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:02:05,451 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:02:05,452 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:02:05,452 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:02:05,452 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:02:05,452 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:02:05,452 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:02:05,452 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:02:05,452 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:02:05,464 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-08-22 23:02:05,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-22 23:02:05,472 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:02:05,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:02:05,473 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:02:05,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:02:05,479 INFO L82 PathProgramCache]: Analyzing trace with hash 493765703, now seen corresponding path program 1 times [2020-08-22 23:02:05,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:02:05,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673369340] [2020-08-22 23:02:05,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:02:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:05,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:02:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:05,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:02:05,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673369340] [2020-08-22 23:02:05,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:02:05,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-22 23:02:05,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643210383] [2020-08-22 23:02:05,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-22 23:02:05,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:02:05,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-22 23:02:05,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 23:02:05,611 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-08-22 23:02:05,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:02:05,637 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-08-22 23:02:05,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-22 23:02:05,639 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-08-22 23:02:05,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:02:05,647 INFO L225 Difference]: With dead ends: 33 [2020-08-22 23:02:05,648 INFO L226 Difference]: Without dead ends: 16 [2020-08-22 23:02:05,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 23:02:05,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-08-22 23:02:05,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-08-22 23:02:05,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-08-22 23:02:05,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-08-22 23:02:05,693 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2020-08-22 23:02:05,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:02:05,693 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-08-22 23:02:05,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-22 23:02:05,693 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-08-22 23:02:05,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-22 23:02:05,694 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:02:05,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:02:05,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:02:05,695 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:02:05,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:02:05,696 INFO L82 PathProgramCache]: Analyzing trace with hash 486377535, now seen corresponding path program 1 times [2020-08-22 23:02:05,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:02:05,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960049007] [2020-08-22 23:02:05,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:02:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:05,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:02:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:02:05,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960049007] [2020-08-22 23:02:05,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:02:05,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 23:02:05,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271248631] [2020-08-22 23:02:05,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 23:02:05,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:02:05,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 23:02:05,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 23:02:05,860 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-08-22 23:02:05,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:02:05,894 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-08-22 23:02:05,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 23:02:05,895 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-08-22 23:02:05,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:02:05,896 INFO L225 Difference]: With dead ends: 25 [2020-08-22 23:02:05,896 INFO L226 Difference]: Without dead ends: 20 [2020-08-22 23:02:05,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 23:02:05,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-08-22 23:02:05,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2020-08-22 23:02:05,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-08-22 23:02:05,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-08-22 23:02:05,905 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2020-08-22 23:02:05,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:02:05,905 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-08-22 23:02:05,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 23:02:05,906 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-08-22 23:02:05,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 23:02:05,907 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:02:05,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:02:05,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:02:05,908 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:02:05,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:02:05,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1748013841, now seen corresponding path program 1 times [2020-08-22 23:02:05,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:02:05,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16141573] [2020-08-22 23:02:05,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:02:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:06,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:02:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:02:06,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16141573] [2020-08-22 23:02:06,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:02:06,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 23:02:06,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298397924] [2020-08-22 23:02:06,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 23:02:06,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:02:06,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 23:02:06,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 23:02:06,077 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2020-08-22 23:02:06,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:02:06,103 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-08-22 23:02:06,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 23:02:06,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-22 23:02:06,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:02:06,105 INFO L225 Difference]: With dead ends: 18 [2020-08-22 23:02:06,105 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 23:02:06,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 23:02:06,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 23:02:06,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 23:02:06,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 23:02:06,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 23:02:06,107 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-08-22 23:02:06,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:02:06,107 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 23:02:06,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 23:02:06,108 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 23:02:06,108 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 23:02:06,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 23:02:06,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 23:02:06,262 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:02:06,262 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:02:06,262 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:02:06,263 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 23:02:06,263 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 23:02:06,263 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:02:06,263 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2020-08-22 23:02:06,264 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 10 20) the Hoare annotation is: true [2020-08-22 23:02:06,264 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (<= 0 main_~x~0) (<= main_~x~0 (* 4294967296 (div main_~x~0 4294967296)))) [2020-08-22 23:02:06,264 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-08-22 23:02:06,264 INFO L264 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (and (<= 0 main_~x~0) (<= main_~x~0 (* 4294967296 (div main_~x~0 4294967296)))) [2020-08-22 23:02:06,265 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (and (<= 0 main_~x~0) (<= main_~x~0 (* 4294967296 (div main_~x~0 4294967296)))) [2020-08-22 23:02:06,265 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 10 20) the Hoare annotation is: true [2020-08-22 23:02:06,265 INFO L271 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-08-22 23:02:06,265 INFO L264 CegarLoopResult]: At program point L14-2(lines 14 17) the Hoare annotation is: (or (and (<= main_~y~0 0) (<= 0 main_~y~0)) (and (<= 0 main_~x~0) (<= main_~x~0 (* 4294967296 (div main_~x~0 4294967296))))) [2020-08-22 23:02:06,266 INFO L264 CegarLoopResult]: At program point L14-3(lines 14 17) the Hoare annotation is: (and (<= 0 main_~x~0) (<= main_~x~0 (* 4294967296 (div main_~x~0 4294967296)))) [2020-08-22 23:02:06,266 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-08-22 23:02:06,266 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 3 8) the Hoare annotation is: true [2020-08-22 23:02:06,266 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 23:02:06,267 INFO L264 CegarLoopResult]: At program point L4(lines 4 6) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 23:02:06,267 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 23:02:06,267 INFO L271 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2020-08-22 23:02:06,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:02:06 BoogieIcfgContainer [2020-08-22 23:02:06,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 23:02:06,290 INFO L168 Benchmark]: Toolchain (without parser) took 1508.74 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 103.9 MB in the beginning and 118.4 MB in the end (delta: -14.5 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2020-08-22 23:02:06,292 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-22 23:02:06,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.34 ms. Allocated memory is still 140.0 MB. Free memory was 103.5 MB in the beginning and 94.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-08-22 23:02:06,294 INFO L168 Benchmark]: Boogie Preprocessor took 103.46 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 94.4 MB in the beginning and 181.7 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-08-22 23:02:06,295 INFO L168 Benchmark]: RCFGBuilder took 229.03 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 170.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-08-22 23:02:06,296 INFO L168 Benchmark]: TraceAbstraction took 895.07 ms. Allocated memory is still 202.9 MB. Free memory was 170.3 MB in the beginning and 118.4 MB in the end (delta: 51.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 7.1 GB. [2020-08-22 23:02:06,300 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 276.34 ms. Allocated memory is still 140.0 MB. Free memory was 103.5 MB in the beginning and 94.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.46 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 94.4 MB in the beginning and 181.7 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 229.03 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 170.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 895.07 ms. Allocated memory is still 202.9 MB. Free memory was 170.3 MB in the beginning and 118.4 MB in the end (delta: 51.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 14]: Loop Invariant Derived loop invariant: (y <= 0 && 0 <= y) || (0 <= x && x <= 4294967296 * (x / 4294967296)) - ProcedureContractResult [Line: 10]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 3]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 5 SDslu, 47 SDs, 0 SdLazy, 9 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 34 PreInvPairs, 45 NumberOfFragments, 91 HoareAnnotationTreeSize, 34 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 22 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 1325 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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...