/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/array-fpi/indp4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 14:53:09,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 14:53:09,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 14:53:09,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 14:53:09,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 14:53:09,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 14:53:09,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 14:53:09,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 14:53:09,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 14:53:09,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 14:53:09,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 14:53:09,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 14:53:09,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 14:53:09,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 14:53:09,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 14:53:09,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 14:53:09,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 14:53:09,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 14:53:09,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 14:53:09,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 14:53:09,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 14:53:09,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 14:53:09,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 14:53:09,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 14:53:09,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 14:53:09,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 14:53:09,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 14:53:09,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 14:53:09,419 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 14:53:09,428 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 14:53:09,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 14:53:09,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 14:53:09,430 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 14:53:09,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 14:53:09,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 14:53:09,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 14:53:09,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 14:53:09,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 14:53:09,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 14:53:09,431 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 14:53:09,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 14:53:09,432 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 14:53:09,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 14:53:09,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 14:53:09,433 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 14:53:09,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 14:53:09,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 14:53:09,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 14:53:09,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 14:53:09,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 14:53:09,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 14:53:09,434 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 14:53:09,722 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 14:53:09,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 14:53:09,745 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 14:53:09,747 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 14:53:09,748 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 14:53:09,749 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp4f.c [2020-07-17 14:53:09,812 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27673f28c/7c80558e9abf48ee9ec9b9a06ff39f0c/FLAG5ed2e92fd [2020-07-17 14:53:10,362 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 14:53:10,363 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp4f.c [2020-07-17 14:53:10,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27673f28c/7c80558e9abf48ee9ec9b9a06ff39f0c/FLAG5ed2e92fd [2020-07-17 14:53:10,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27673f28c/7c80558e9abf48ee9ec9b9a06ff39f0c [2020-07-17 14:53:10,685 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 14:53:10,689 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 14:53:10,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 14:53:10,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 14:53:10,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 14:53:10,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:53:10" (1/1) ... [2020-07-17 14:53:10,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@660616ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:10, skipping insertion in model container [2020-07-17 14:53:10,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:53:10" (1/1) ... [2020-07-17 14:53:10,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 14:53:10,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 14:53:10,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:53:10,924 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 14:53:10,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:53:10,963 INFO L208 MainTranslator]: Completed translation [2020-07-17 14:53:10,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:10 WrapperNode [2020-07-17 14:53:10,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 14:53:10,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 14:53:10,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 14:53:10,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 14:53:11,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:10" (1/1) ... [2020-07-17 14:53:11,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:10" (1/1) ... [2020-07-17 14:53:11,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:10" (1/1) ... [2020-07-17 14:53:11,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:10" (1/1) ... [2020-07-17 14:53:11,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:10" (1/1) ... [2020-07-17 14:53:11,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:10" (1/1) ... [2020-07-17 14:53:11,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:10" (1/1) ... [2020-07-17 14:53:11,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 14:53:11,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 14:53:11,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 14:53:11,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 14:53:11,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:10" (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 14:53:11,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 14:53:11,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 14:53:11,173 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 14:53:11,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 14:53:11,173 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 14:53:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 14:53:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 14:53:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 14:53:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 14:53:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 14:53:11,174 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 14:53:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 14:53:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 14:53:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 14:53:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 14:53:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 14:53:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 14:53:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 14:53:11,493 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 14:53:11,493 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-17 14:53:11,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:53:11 BoogieIcfgContainer [2020-07-17 14:53:11,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 14:53:11,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 14:53:11,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 14:53:11,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 14:53:11,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 02:53:10" (1/3) ... [2020-07-17 14:53:11,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1f1106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:53:11, skipping insertion in model container [2020-07-17 14:53:11,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:10" (2/3) ... [2020-07-17 14:53:11,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1f1106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:53:11, skipping insertion in model container [2020-07-17 14:53:11,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:53:11" (3/3) ... [2020-07-17 14:53:11,512 INFO L109 eAbstractionObserver]: Analyzing ICFG indp4f.c [2020-07-17 14:53:11,527 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 14:53:11,540 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 14:53:11,565 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 14:53:11,594 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 14:53:11,595 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 14:53:11,595 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 14:53:11,595 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 14:53:11,596 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 14:53:11,596 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 14:53:11,596 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 14:53:11,596 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 14:53:11,617 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-07-17 14:53:11,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-17 14:53:11,629 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:53:11,630 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, 1, 1, 1, 1, 1] [2020-07-17 14:53:11,631 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:53:11,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:53:11,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1846170158, now seen corresponding path program 1 times [2020-07-17 14:53:11,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:53:11,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165733717] [2020-07-17 14:53:11,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:53:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:53:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:53:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:53:11,900 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 14:53:11,903 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:53:11,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165733717] [2020-07-17 14:53:11,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:53:11,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 14:53:11,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606611483] [2020-07-17 14:53:11,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 14:53:11,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:53:11,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 14:53:11,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 14:53:11,937 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 3 states. [2020-07-17 14:53:12,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:53:12,128 INFO L93 Difference]: Finished difference Result 109 states and 128 transitions. [2020-07-17 14:53:12,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 14:53:12,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-07-17 14:53:12,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:53:12,141 INFO L225 Difference]: With dead ends: 109 [2020-07-17 14:53:12,141 INFO L226 Difference]: Without dead ends: 56 [2020-07-17 14:53:12,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 14:53:12,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-17 14:53:12,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-07-17 14:53:12,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-17 14:53:12,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-07-17 14:53:12,198 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 33 [2020-07-17 14:53:12,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:53:12,198 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-07-17 14:53:12,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 14:53:12,199 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-07-17 14:53:12,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-17 14:53:12,201 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:53:12,201 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, 1, 1, 1, 1, 1] [2020-07-17 14:53:12,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 14:53:12,202 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:53:12,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:53:12,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1457656721, now seen corresponding path program 1 times [2020-07-17 14:53:12,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:53:12,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179031433] [2020-07-17 14:53:12,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:53:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:53:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:53:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:53:12,339 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 14:53:12,342 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:53:12,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179031433] [2020-07-17 14:53:12,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:53:12,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 14:53:12,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199634943] [2020-07-17 14:53:12,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 14:53:12,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:53:12,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 14:53:12,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 14:53:12,346 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 5 states. [2020-07-17 14:53:12,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:53:12,595 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2020-07-17 14:53:12,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 14:53:12,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-07-17 14:53:12,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:53:12,600 INFO L225 Difference]: With dead ends: 108 [2020-07-17 14:53:12,601 INFO L226 Difference]: Without dead ends: 78 [2020-07-17 14:53:12,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-17 14:53:12,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-17 14:53:12,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 59. [2020-07-17 14:53:12,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-17 14:53:12,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-07-17 14:53:12,626 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 33 [2020-07-17 14:53:12,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:53:12,627 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-07-17 14:53:12,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 14:53:12,627 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-07-17 14:53:12,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-17 14:53:12,629 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:53:12,630 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, 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 14:53:12,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 14:53:12,631 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:53:12,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:53:12,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1203755678, now seen corresponding path program 1 times [2020-07-17 14:53:12,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:53:12,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164358725] [2020-07-17 14:53:12,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:53:12,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 14:53:12,665 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:458) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:290) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:191) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-17 14:53:12,672 INFO L168 Benchmark]: Toolchain (without parser) took 1984.06 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 102.0 MB in the beginning and 85.8 MB in the end (delta: 16.2 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. [2020-07-17 14:53:12,673 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 136.3 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-17 14:53:12,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.00 ms. Allocated memory is still 136.3 MB. Free memory was 101.5 MB in the beginning and 90.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-17 14:53:12,675 INFO L168 Benchmark]: Boogie Preprocessor took 126.01 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 90.9 MB in the beginning and 178.4 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-17 14:53:12,676 INFO L168 Benchmark]: RCFGBuilder took 408.29 ms. Allocated memory is still 200.3 MB. Free memory was 177.7 MB in the beginning and 159.2 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2020-07-17 14:53:12,677 INFO L168 Benchmark]: TraceAbstraction took 1168.65 ms. Allocated memory is still 200.3 MB. Free memory was 158.5 MB in the beginning and 85.8 MB in the end (delta: 72.7 MB). Peak memory consumption was 72.7 MB. Max. memory is 7.1 GB. [2020-07-17 14:53:12,681 INFO L336 ainManager$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 136.3 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 274.00 ms. Allocated memory is still 136.3 MB. Free memory was 101.5 MB in the beginning and 90.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.01 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 90.9 MB in the beginning and 178.4 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 408.29 ms. Allocated memory is still 200.3 MB. Free memory was 177.7 MB in the beginning and 159.2 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1168.65 ms. Allocated memory is still 200.3 MB. Free memory was 158.5 MB in the beginning and 85.8 MB in the end (delta: 72.7 MB). Peak memory consumption was 72.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:458) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...