/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/terminator_03-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:45:39,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:45:39,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:45:39,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:45:39,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:45:39,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:45:39,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:45:39,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:45:39,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:45:39,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:45:39,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:45:39,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:45:39,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:45:39,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:45:39,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:45:39,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:45:39,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:45:39,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:45:39,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:45:39,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:45:39,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:45:39,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:45:39,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:45:39,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:45:39,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:45:39,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:45:39,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:45:39,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:45:39,827 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 17:45:39,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:45:39,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:45:39,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:45:39,841 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:45:39,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:45:39,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:45:39,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:45:39,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:45:39,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:45:39,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:45:39,842 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:45:39,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:45:39,843 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:45:39,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:45:39,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:45:39,843 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:45:39,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:45:39,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:45:39,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:45:39,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:45:39,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:45:39,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:45:39,845 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:45:40,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:45:40,319 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:45:40,323 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:45:40,325 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:45:40,326 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:45:40,327 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_03-2.i [2020-09-04 17:45:40,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dabf22fd2/89a6e0c73a0a4dbdb6f7ec946c3a1149/FLAG00685d892 [2020-09-04 17:45:40,963 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:45:40,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/terminator_03-2.i [2020-09-04 17:45:40,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dabf22fd2/89a6e0c73a0a4dbdb6f7ec946c3a1149/FLAG00685d892 [2020-09-04 17:45:41,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dabf22fd2/89a6e0c73a0a4dbdb6f7ec946c3a1149 [2020-09-04 17:45:41,331 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:45:41,333 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:45:41,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:45:41,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:45:41,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:45:41,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:45:41" (1/1) ... [2020-09-04 17:45:41,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3250662d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:41, skipping insertion in model container [2020-09-04 17:45:41,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:45:41" (1/1) ... [2020-09-04 17:45:41,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:45:41,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:45:41,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:45:41,594 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:45:41,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:45:41,633 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:45:41,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:41 WrapperNode [2020-09-04 17:45:41,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:45:41,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:45:41,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:45:41,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:45:41,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:41" (1/1) ... [2020-09-04 17:45:41,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:41" (1/1) ... [2020-09-04 17:45:41,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:41" (1/1) ... [2020-09-04 17:45:41,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:41" (1/1) ... [2020-09-04 17:45:41,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:41" (1/1) ... [2020-09-04 17:45:41,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:41" (1/1) ... [2020-09-04 17:45:41,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:41" (1/1) ... [2020-09-04 17:45:41,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:45:41,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:45:41,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:45:41,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:45:41,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:41" (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 17:45:41,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:45:41,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:45:41,823 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:45:41,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:45:41,824 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:45:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:45:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:45:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:45:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:45:41,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:45:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-04 17:45:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:45:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:45:41,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:45:42,045 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:45:42,045 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 17:45:42,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:45:42 BoogieIcfgContainer [2020-09-04 17:45:42,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:45:42,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:45:42,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:45:42,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:45:42,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:45:41" (1/3) ... [2020-09-04 17:45:42,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574ddb61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:45:42, skipping insertion in model container [2020-09-04 17:45:42,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:45:41" (2/3) ... [2020-09-04 17:45:42,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574ddb61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:45:42, skipping insertion in model container [2020-09-04 17:45:42,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:45:42" (3/3) ... [2020-09-04 17:45:42,091 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_03-2.i [2020-09-04 17:45:42,116 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:45:42,136 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:45:42,163 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:45:42,189 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:45:42,189 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:45:42,189 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:45:42,190 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:45:42,190 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:45:42,190 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:45:42,190 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:45:42,190 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:45:42,205 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-04 17:45:42,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-04 17:45:42,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:45:42,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:45:42,219 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:45:42,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:45:42,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1821115279, now seen corresponding path program 1 times [2020-09-04 17:45:42,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:45:42,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444427259] [2020-09-04 17:45:42,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:45:42,304 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:45:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:45:42,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:45:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:45:42,468 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 17:45:42,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444427259] [2020-09-04 17:45:42,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:45:42,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:45:42,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136346811] [2020-09-04 17:45:42,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:45:42,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:45:42,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:45:42,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:45:42,506 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-04 17:45:42,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:45:42,602 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2020-09-04 17:45:42,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:45:42,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-04 17:45:42,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:45:42,614 INFO L225 Difference]: With dead ends: 47 [2020-09-04 17:45:42,615 INFO L226 Difference]: Without dead ends: 19 [2020-09-04 17:45:42,619 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 [2020-09-04 17:45:42,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-09-04 17:45:42,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-09-04 17:45:42,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-09-04 17:45:42,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-09-04 17:45:42,662 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-09-04 17:45:42,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:45:42,663 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-09-04 17:45:42,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:45:42,663 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-09-04 17:45:42,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-04 17:45:42,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:45:42,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:45:42,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:45:42,665 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:45:42,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:45:42,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1074850683, now seen corresponding path program 1 times [2020-09-04 17:45:42,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:45:42,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227042089] [2020-09-04 17:45:42,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:45:42,669 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:45:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:45:42,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:45:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:45:42,773 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 17:45:42,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227042089] [2020-09-04 17:45:42,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:45:42,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 17:45:42,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201570777] [2020-09-04 17:45:42,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 17:45:42,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:45:42,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 17:45:42,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 17:45:42,777 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2020-09-04 17:45:42,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:45:42,820 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-09-04 17:45:42,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:45:42,820 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-04 17:45:42,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:45:42,821 INFO L225 Difference]: With dead ends: 19 [2020-09-04 17:45:42,821 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 17:45:42,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 17:45:42,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 17:45:42,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 17:45:42,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 17:45:42,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 17:45:42,826 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-04 17:45:42,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:45:42,827 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 17:45:42,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 17:45:42,827 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 17:45:42,827 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 17:45:42,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:45:42,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 17:45:42,980 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 17:45:42,980 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 17:45:42,980 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 17:45:42,981 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 17:45:42,981 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 17:45:42,981 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 17:45:42,981 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-04 17:45:42,981 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-04 17:45:42,982 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-04 17:45:42,982 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-04 17:45:42,982 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-04 17:45:42,982 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 14 25) the Hoare annotation is: true [2020-09-04 17:45:42,982 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-09-04 17:45:42,982 INFO L271 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-09-04 17:45:42,983 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 21) the Hoare annotation is: (< 0 main_~y~0) [2020-09-04 17:45:42,983 INFO L271 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-09-04 17:45:42,983 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-09-04 17:45:42,983 INFO L271 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: true [2020-09-04 17:45:42,983 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 14 25) the Hoare annotation is: true [2020-09-04 17:45:42,984 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 25) the Hoare annotation is: true [2020-09-04 17:45:42,984 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (< 0 main_~y~0) [2020-09-04 17:45:42,984 INFO L271 CegarLoopResult]: At program point L18(lines 18 22) the Hoare annotation is: true [2020-09-04 17:45:42,984 INFO L264 CegarLoopResult]: At program point L18-1(lines 18 22) the Hoare annotation is: (or (<= main_~y~0 0) (< 99 main_~x~0)) [2020-09-04 17:45:42,984 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-09-04 17:45:42,985 INFO L271 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: true [2020-09-04 17:45:42,985 INFO L271 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: true [2020-09-04 17:45:42,985 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-04 17:45:42,985 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-09-04 17:45:42,986 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-09-04 17:45:42,986 INFO L264 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-09-04 17:45:42,986 INFO L264 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-09-04 17:45:42,986 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-09-04 17:45:43,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:45:43 BoogieIcfgContainer [2020-09-04 17:45:43,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:45:43,014 INFO L168 Benchmark]: Toolchain (without parser) took 1679.69 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 104.8 MB in the beginning and 115.1 MB in the end (delta: -10.2 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 GB. [2020-09-04 17:45:43,015 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:45:43,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.65 ms. Allocated memory is still 140.0 MB. Free memory was 104.6 MB in the beginning and 94.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-04 17:45:43,017 INFO L168 Benchmark]: Boogie Preprocessor took 114.18 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 94.7 MB in the beginning and 182.6 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-09-04 17:45:43,018 INFO L168 Benchmark]: RCFGBuilder took 304.64 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 168.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-04 17:45:43,019 INFO L168 Benchmark]: TraceAbstraction took 944.61 ms. Allocated memory is still 203.4 MB. Free memory was 168.5 MB in the beginning and 115.1 MB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:45:43,023 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 299.65 ms. Allocated memory is still 140.0 MB. Free memory was 104.6 MB in the beginning and 94.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.18 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 94.7 MB in the beginning and 182.6 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 304.64 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 168.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 944.61 ms. Allocated memory is still 203.4 MB. Free memory was 168.5 MB in the beginning and 115.1 MB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 19]: Loop Invariant Derived loop invariant: 0 < y - ProcedureContractResult [Line: 14]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 12 SDslu, 126 SDs, 0 SdLazy, 30 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 27 LocationsWithAnnotation, 39 PreInvPairs, 53 NumberOfFragments, 62 HoareAnnotationTreeSize, 39 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 27 FomulaSimplificationsInter, 37 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...