/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/loop-lit/jm2006.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 14:56:05,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 14:56:05,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 14:56:05,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 14:56:05,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 14:56:05,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 14:56:05,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 14:56:05,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 14:56:05,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 14:56:05,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 14:56:05,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 14:56:05,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 14:56:05,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 14:56:05,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 14:56:05,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 14:56:05,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 14:56:05,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 14:56:05,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 14:56:05,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 14:56:05,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 14:56:05,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 14:56:05,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 14:56:05,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 14:56:05,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 14:56:05,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 14:56:05,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 14:56:05,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 14:56:05,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 14:56:05,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 14:56:05,455 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 14:56:05,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 14:56:05,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 14:56:05,464 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 14:56:05,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 14:56:05,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 14:56:05,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 14:56:05,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 14:56:05,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 14:56:05,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 14:56:05,467 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 14:56:05,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 14:56:05,467 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 14:56:05,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 14:56:05,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 14:56:05,468 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 14:56:05,468 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 14:56:05,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 14:56:05,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 14:56:05,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 14:56:05,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 14:56:05,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 14:56:05,469 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 14:56:05,757 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 14:56:05,770 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 14:56:05,774 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 14:56:05,775 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 14:56:05,775 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 14:56:05,776 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.i [2020-07-17 14:56:05,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/909caf597/0b974e8a0acb46578328ddbf4c6aa7b9/FLAG6fc731fbc [2020-07-17 14:56:06,337 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 14:56:06,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i [2020-07-17 14:56:06,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/909caf597/0b974e8a0acb46578328ddbf4c6aa7b9/FLAG6fc731fbc [2020-07-17 14:56:06,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/909caf597/0b974e8a0acb46578328ddbf4c6aa7b9 [2020-07-17 14:56:06,707 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 14:56:06,710 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 14:56:06,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 14:56:06,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 14:56:06,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 14:56:06,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:56:06" (1/1) ... [2020-07-17 14:56:06,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cbb3709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:06, skipping insertion in model container [2020-07-17 14:56:06,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:56:06" (1/1) ... [2020-07-17 14:56:06,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 14:56:06,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 14:56:06,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:56:06,928 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 14:56:06,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:56:06,963 INFO L208 MainTranslator]: Completed translation [2020-07-17 14:56:06,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:06 WrapperNode [2020-07-17 14:56:06,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 14:56:06,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 14:56:06,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 14:56:06,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 14:56:06,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:06" (1/1) ... [2020-07-17 14:56:06,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:06" (1/1) ... [2020-07-17 14:56:06,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:06" (1/1) ... [2020-07-17 14:56:06,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:06" (1/1) ... [2020-07-17 14:56:06,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:06" (1/1) ... [2020-07-17 14:56:06,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:06" (1/1) ... [2020-07-17 14:56:06,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:06" (1/1) ... [2020-07-17 14:56:07,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 14:56:07,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 14:56:07,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 14:56:07,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 14:56:07,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 14:56:07,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 14:56:07,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 14:56:07,158 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 14:56:07,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 14:56:07,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 14:56:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 14:56:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 14:56:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 14:56:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 14:56:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 14:56:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 14:56:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 14:56:07,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 14:56:07,399 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 14:56:07,400 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 14:56:07,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:56:07 BoogieIcfgContainer [2020-07-17 14:56:07,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 14:56:07,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 14:56:07,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 14:56:07,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 14:56:07,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 02:56:06" (1/3) ... [2020-07-17 14:56:07,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5f8be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:56:07, skipping insertion in model container [2020-07-17 14:56:07,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:06" (2/3) ... [2020-07-17 14:56:07,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5f8be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:56:07, skipping insertion in model container [2020-07-17 14:56:07,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:56:07" (3/3) ... [2020-07-17 14:56:07,418 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.i [2020-07-17 14:56:07,435 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 14:56:07,443 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 14:56:07,463 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 14:56:07,492 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 14:56:07,493 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 14:56:07,493 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 14:56:07,493 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 14:56:07,493 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 14:56:07,494 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 14:56:07,494 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 14:56:07,494 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 14:56:07,521 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-07-17 14:56:07,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-17 14:56:07,556 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:07,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:07,558 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:07,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:07,564 INFO L82 PathProgramCache]: Analyzing trace with hash -47870921, now seen corresponding path program 1 times [2020-07-17 14:56:07,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:07,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319167344] [2020-07-17 14:56:07,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:07,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:07,990 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:07,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319167344] [2020-07-17 14:56:07,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:07,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 14:56:07,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863603163] [2020-07-17 14:56:08,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 14:56:08,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:08,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 14:56:08,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-17 14:56:08,024 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 8 states. [2020-07-17 14:56:08,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:08,379 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2020-07-17 14:56:08,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 14:56:08,381 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-07-17 14:56:08,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:08,391 INFO L225 Difference]: With dead ends: 64 [2020-07-17 14:56:08,391 INFO L226 Difference]: Without dead ends: 31 [2020-07-17 14:56:08,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-07-17 14:56:08,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-17 14:56:08,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-07-17 14:56:08,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-17 14:56:08,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-07-17 14:56:08,444 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 21 [2020-07-17 14:56:08,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:08,445 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-07-17 14:56:08,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 14:56:08,445 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-07-17 14:56:08,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-17 14:56:08,447 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:08,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:08,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 14:56:08,448 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:08,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:08,448 INFO L82 PathProgramCache]: Analyzing trace with hash -999978286, now seen corresponding path program 1 times [2020-07-17 14:56:08,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:08,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600755680] [2020-07-17 14:56:08,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:08,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:08,879 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:08,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600755680] [2020-07-17 14:56:08,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:08,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-17 14:56:08,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922948037] [2020-07-17 14:56:08,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-17 14:56:08,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:08,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-17 14:56:08,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-07-17 14:56:08,883 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 12 states. [2020-07-17 14:56:09,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:09,229 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-07-17 14:56:09,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-17 14:56:09,230 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-07-17 14:56:09,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:09,234 INFO L225 Difference]: With dead ends: 31 [2020-07-17 14:56:09,235 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 14:56:09,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2020-07-17 14:56:09,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 14:56:09,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 14:56:09,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 14:56:09,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 14:56:09,246 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-07-17 14:56:09,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:09,247 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 14:56:09,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-17 14:56:09,247 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 14:56:09,248 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 14:56:09,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 14:56:09,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 14:56:09,612 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 14:56:09,612 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-17 14:56:09,612 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-17 14:56:09,612 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 14:56:09,613 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 14:56:09,613 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-17 14:56:09,613 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-07-17 14:56:09,613 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-17 14:56:09,613 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-17 14:56:09,613 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-07-17 14:56:09,614 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-17 14:56:09,615 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (let ((.cse2 (<= main_~y~0 0)) (.cse3 (< 0 (+ main_~y~0 1)))) (or (let ((.cse1 (+ main_~i~0 main_~y~0)) (.cse0 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) .cse2 .cse3)) (and (<= main_~i~0 main_~x~0) .cse2 (<= main_~x~0 main_~i~0) .cse3))) [2020-07-17 14:56:09,615 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 28) the Hoare annotation is: true [2020-07-17 14:56:09,616 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0)) (.cse0 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-07-17 14:56:09,616 INFO L264 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: (let ((.cse2 (+ main_~x~0 main_~j~0)) (.cse1 (+ |main_#t~post2| main_~j~0)) (.cse0 (+ main_~i~0 main_~y~0))) (and (<= .cse0 .cse1) (<= .cse2 .cse0) (<= .cse0 .cse2) (<= .cse1 .cse0))) [2020-07-17 14:56:09,616 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (<= main_~i~0 main_~x~0) (<= main_~x~0 main_~i~0)) [2020-07-17 14:56:09,616 INFO L264 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~j~0 1)) (.cse2 (+ |main_#t~post2| main_~j~0)) (.cse1 (+ main_~i~0 main_~y~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse1 .cse2) (<= .cse2 .cse1))) [2020-07-17 14:56:09,616 INFO L271 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-07-17 14:56:09,617 INFO L271 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-07-17 14:56:09,617 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-07-17 14:56:09,617 INFO L271 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: true [2020-07-17 14:56:09,618 INFO L271 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: true [2020-07-17 14:56:09,618 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 13 28) the Hoare annotation is: true [2020-07-17 14:56:09,618 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 28) the Hoare annotation is: true [2020-07-17 14:56:09,618 INFO L271 CegarLoopResult]: At program point L24(lines 24 26) the Hoare annotation is: true [2020-07-17 14:56:09,620 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0)) (.cse0 (+ main_~x~0 main_~j~0 1))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-07-17 14:56:09,625 INFO L264 CegarLoopResult]: At program point L22-1(line 22) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0)) (.cse2 (+ main_~i~0 |main_#t~post3|)) (.cse0 (+ main_~x~0 main_~j~0 1))) (and (<= .cse0 .cse1) (<= .cse0 .cse2) (<= .cse1 .cse0) (<= .cse2 .cse0))) [2020-07-17 14:56:09,627 INFO L264 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 |main_#t~post3|)) (.cse0 (+ main_~x~0 main_~j~0 1)) (.cse3 (+ main_~i~0 main_~y~0)) (.cse2 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse2 .cse3) (<= .cse3 .cse2))) [2020-07-17 14:56:09,627 INFO L271 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: true [2020-07-17 14:56:09,627 INFO L264 CegarLoopResult]: At program point L20-2(lines 20 23) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0)) (.cse0 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-07-17 14:56:09,633 INFO L264 CegarLoopResult]: At program point L20-3(lines 13 28) the Hoare annotation is: (let ((.cse5 (< 0 (+ main_~y~0 1))) (.cse4 (<= main_~y~0 0)) (.cse6 (+ main_~i~0 main_~y~0)) (.cse7 (+ main_~x~0 main_~j~0))) (let ((.cse1 (<= .cse6 .cse7)) (.cse0 (<= .cse7 .cse6)) (.cse2 (or (<= .cse6 main_~j~0) .cse4)) (.cse3 (or (<= main_~j~0 .cse6) .cse5))) (or (and .cse0 .cse1 .cse2 .cse3) (and (or .cse1 .cse4) (<= main_~i~0 main_~x~0) (or .cse0 .cse5) .cse2 (<= main_~x~0 main_~i~0) .cse3)))) [2020-07-17 14:56:09,634 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-07-17 14:56:09,634 INFO L271 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: true [2020-07-17 14:56:09,635 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-17 14:56:09,635 INFO L271 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: true [2020-07-17 14:56:09,635 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-17 14:56:09,635 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-17 14:56:09,636 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-17 14:56:09,636 INFO L264 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-17 14:56:09,638 INFO L264 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-17 14:56:09,639 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-17 14:56:09,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 02:56:09 BoogieIcfgContainer [2020-07-17 14:56:09,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 14:56:09,680 INFO L168 Benchmark]: Toolchain (without parser) took 2969.15 ms. Allocated memory was 146.3 MB in the beginning and 233.8 MB in the end (delta: 87.6 MB). Free memory was 104.7 MB in the beginning and 124.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 67.5 MB. Max. memory is 7.1 GB. [2020-07-17 14:56:09,683 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 14:56:09,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.29 ms. Allocated memory is still 146.3 MB. Free memory was 104.2 MB in the beginning and 94.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-17 14:56:09,687 INFO L168 Benchmark]: Boogie Preprocessor took 127.15 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 94.5 MB in the beginning and 184.0 MB in the end (delta: -89.4 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-17 14:56:09,689 INFO L168 Benchmark]: RCFGBuilder took 314.24 ms. Allocated memory is still 204.5 MB. Free memory was 184.0 MB in the beginning and 169.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-17 14:56:09,691 INFO L168 Benchmark]: TraceAbstraction took 2266.19 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 168.7 MB in the beginning and 124.7 MB in the end (delta: 44.0 MB). Peak memory consumption was 73.4 MB. Max. memory is 7.1 GB. [2020-07-17 14:56:09,704 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 251.29 ms. Allocated memory is still 146.3 MB. Free memory was 104.2 MB in the beginning and 94.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.15 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 94.5 MB in the beginning and 184.0 MB in the end (delta: -89.4 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 314.24 ms. Allocated memory is still 204.5 MB. Free memory was 184.0 MB in the beginning and 169.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2266.19 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 168.7 MB in the beginning and 124.7 MB in the end (delta: 44.0 MB). Peak memory consumption was 73.4 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: 20]: Loop Invariant Derived loop invariant: x + j <= i + y && i + y <= x + j - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 0 == \old(cond) || !(0 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 40 SDslu, 253 SDs, 0 SdLazy, 177 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 36 LocationsWithAnnotation, 48 PreInvPairs, 70 NumberOfFragments, 355 HoareAnnotationTreeSize, 48 FomulaSimplifications, 104 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 36 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 0.1s 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...