/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:29:43,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:29:43,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:29:43,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:29:43,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:29:43,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:29:43,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:29:43,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:29:43,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:29:43,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:29:43,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:29:43,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:29:43,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:29:43,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:29:43,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:29:43,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:29:43,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:29:43,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:29:43,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:29:43,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:29:43,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:29:43,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:29:43,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:29:43,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:29:43,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:29:43,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:29:43,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:29:43,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:29:43,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:29:43,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:29:43,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:29:43,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:29:43,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:29:43,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:29:43,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:29:43,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:29:43,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:29:43,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:29:43,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:29:43,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:29:43,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:29:43,450 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:29:43,463 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:29:43,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:29:43,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:29:43,465 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:29:43,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:29:43,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:29:43,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:29:43,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:29:43,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:29:43,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:29:43,466 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:29:43,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:29:43,467 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:29:43,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:29:43,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:29:43,468 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:29:43,468 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:29:43,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:29:43,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:29:43,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:29:43,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:29:43,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:29:43,469 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:29:43,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:29:43,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:29:43,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:29:43,873 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:29:43,874 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:29:43,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-10-23 20:29:43,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373aa2134/a5dd9fade8d746e8a0f450326288c0a9/FLAG200d3101b [2020-10-23 20:29:44,587 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:29:44,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-10-23 20:29:44,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373aa2134/a5dd9fade8d746e8a0f450326288c0a9/FLAG200d3101b [2020-10-23 20:29:44,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373aa2134/a5dd9fade8d746e8a0f450326288c0a9 [2020-10-23 20:29:44,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:29:44,989 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:29:44,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:29:44,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:29:45,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:29:45,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:29:44" (1/1) ... [2020-10-23 20:29:45,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24faec1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:45, skipping insertion in model container [2020-10-23 20:29:45,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:29:44" (1/1) ... [2020-10-23 20:29:45,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:29:45,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:29:45,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:29:45,234 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:29:45,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:29:45,306 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:29:45,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:45 WrapperNode [2020-10-23 20:29:45,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:29:45,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:29:45,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:29:45,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:29:45,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:45" (1/1) ... [2020-10-23 20:29:45,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:45" (1/1) ... [2020-10-23 20:29:45,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:45" (1/1) ... [2020-10-23 20:29:45,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:45" (1/1) ... [2020-10-23 20:29:45,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:45" (1/1) ... [2020-10-23 20:29:45,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:45" (1/1) ... [2020-10-23 20:29:45,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:45" (1/1) ... [2020-10-23 20:29:45,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:29:45,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:29:45,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:29:45,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:29:45,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:45" (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 [2020-10-23 20:29:45,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:29:45,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:29:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:29:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 20:29:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 20:29:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-23 20:29:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:29:45,434 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-23 20:29:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-23 20:29:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:29:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:29:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:29:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:29:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:29:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 20:29:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 20:29:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:29:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-23 20:29:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:29:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:29:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:29:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-23 20:29:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:29:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:29:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:29:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:29:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:29:45,911 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:29:45,912 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 20:29:45,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:29:45 BoogieIcfgContainer [2020-10-23 20:29:45,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:29:45,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:29:45,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:29:45,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:29:45,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:29:44" (1/3) ... [2020-10-23 20:29:45,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3653ba9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:29:45, skipping insertion in model container [2020-10-23 20:29:45,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:45" (2/3) ... [2020-10-23 20:29:45,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3653ba9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:29:45, skipping insertion in model container [2020-10-23 20:29:45,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:29:45" (3/3) ... [2020-10-23 20:29:45,923 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2020-10-23 20:29:45,936 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:29:45,942 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:29:45,955 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:29:45,977 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:29:45,978 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:29:45,978 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:29:45,978 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:29:45,978 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:29:45,979 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:29:45,979 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:29:45,979 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:29:45,997 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-10-23 20:29:46,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-23 20:29:46,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:29:46,009 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] [2020-10-23 20:29:46,010 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:29:46,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:29:46,017 INFO L82 PathProgramCache]: Analyzing trace with hash -814113911, now seen corresponding path program 1 times [2020-10-23 20:29:46,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:29:46,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982208736] [2020-10-23 20:29:46,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:29:46,112 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:29:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:46,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:29:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:46,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 20:29:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:46,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-23 20:29:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:46,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:29:46,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982208736] [2020-10-23 20:29:46,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:29:46,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:29:46,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069416538] [2020-10-23 20:29:46,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:29:46,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:29:46,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:29:46,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:29:46,614 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 10 states. [2020-10-23 20:29:48,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:29:48,547 INFO L93 Difference]: Finished difference Result 219 states and 252 transitions. [2020-10-23 20:29:48,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 20:29:48,549 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-10-23 20:29:48,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:29:48,561 INFO L225 Difference]: With dead ends: 219 [2020-10-23 20:29:48,561 INFO L226 Difference]: Without dead ends: 129 [2020-10-23 20:29:48,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-10-23 20:29:48,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-23 20:29:48,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 114. [2020-10-23 20:29:48,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-23 20:29:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 121 transitions. [2020-10-23 20:29:48,677 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 121 transitions. Word has length 37 [2020-10-23 20:29:48,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:29:48,678 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 121 transitions. [2020-10-23 20:29:48,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:29:48,678 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 121 transitions. [2020-10-23 20:29:48,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-23 20:29:48,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:29:48,682 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2020-10-23 20:29:48,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:29:48,682 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:29:48,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:29:48,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1540266705, now seen corresponding path program 1 times [2020-10-23 20:29:48,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:29:48,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560779234] [2020-10-23 20:29:48,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:29:48,689 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:29:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:48,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:29:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:48,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 20:29:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:48,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-23 20:29:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:48,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-23 20:29:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:29:48,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560779234] [2020-10-23 20:29:48,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:29:48,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:29:48,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692753808] [2020-10-23 20:29:48,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:29:48,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:29:48,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:29:48,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:29:48,961 INFO L87 Difference]: Start difference. First operand 114 states and 121 transitions. Second operand 11 states. [2020-10-23 20:29:49,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:29:49,808 INFO L93 Difference]: Finished difference Result 175 states and 189 transitions. [2020-10-23 20:29:49,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 20:29:49,809 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-23 20:29:49,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:29:49,813 INFO L225 Difference]: With dead ends: 175 [2020-10-23 20:29:49,813 INFO L226 Difference]: Without dead ends: 104 [2020-10-23 20:29:49,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-23 20:29:49,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-23 20:29:49,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-23 20:29:49,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-23 20:29:49,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 109 transitions. [2020-10-23 20:29:49,864 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 109 transitions. Word has length 58 [2020-10-23 20:29:49,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:29:49,865 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 109 transitions. [2020-10-23 20:29:49,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:29:49,865 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 109 transitions. [2020-10-23 20:29:49,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-23 20:29:49,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:29:49,867 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2020-10-23 20:29:49,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:29:49,868 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:29:49,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:29:49,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1632937615, now seen corresponding path program 1 times [2020-10-23 20:29:49,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:29:49,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496436164] [2020-10-23 20:29:49,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:29:49,876 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:29:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:50,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:29:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:50,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 20:29:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:50,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-23 20:29:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:50,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-23 20:29:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:29:50,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:29:50,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496436164] [2020-10-23 20:29:50,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:29:50,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:29:50,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307509523] [2020-10-23 20:29:50,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:29:50,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:29:50,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:29:50,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:29:50,276 INFO L87 Difference]: Start difference. First operand 104 states and 109 transitions. Second operand 15 states. [2020-10-23 20:29:52,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:29:52,224 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2020-10-23 20:29:52,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:29:52,226 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2020-10-23 20:29:52,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:29:52,232 INFO L225 Difference]: With dead ends: 148 [2020-10-23 20:29:52,232 INFO L226 Difference]: Without dead ends: 145 [2020-10-23 20:29:52,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=160, Invalid=710, Unknown=0, NotChecked=0, Total=870 [2020-10-23 20:29:52,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-23 20:29:52,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2020-10-23 20:29:52,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-23 20:29:52,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2020-10-23 20:29:52,290 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 58 [2020-10-23 20:29:52,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:29:52,291 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2020-10-23 20:29:52,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:29:52,291 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2020-10-23 20:29:52,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-23 20:29:52,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:29:52,295 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:29:52,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:29:52,295 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:29:52,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:29:52,296 INFO L82 PathProgramCache]: Analyzing trace with hash -396077462, now seen corresponding path program 1 times [2020-10-23 20:29:52,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:29:52,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520632117] [2020-10-23 20:29:52,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:29:52,299 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.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) 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:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 20:29:52,305 INFO L168 Benchmark]: Toolchain (without parser) took 7320.84 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 127.2 MB in the beginning and 143.9 MB in the end (delta: -16.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:29:52,306 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:29:52,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.83 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:29:52,308 INFO L168 Benchmark]: Boogie Preprocessor took 44.13 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 114.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:29:52,309 INFO L168 Benchmark]: RCFGBuilder took 561.10 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 128.9 MB in the end (delta: -14.0 MB). Peak memory consumption was 19.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:29:52,310 INFO L168 Benchmark]: TraceAbstraction took 6387.11 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 128.5 MB in the beginning and 143.9 MB in the end (delta: -15.4 MB). Peak memory consumption was 52.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:29:52,314 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 311.83 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.13 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 114.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 561.10 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 128.9 MB in the end (delta: -14.0 MB). Peak memory consumption was 19.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6387.11 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 128.5 MB in the beginning and 143.9 MB in the end (delta: -15.4 MB). Peak memory consumption was 52.3 MB. Max. memory is 8.0 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.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...