/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_2x3-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:11:24,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:11:24,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:11:24,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:11:24,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:11:24,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:11:24,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:11:24,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:11:24,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:11:24,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:11:24,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:11:24,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:11:24,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:11:24,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:11:24,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:11:24,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:11:24,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:11:24,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:11:24,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:11:24,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:11:24,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:11:24,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:11:24,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:11:24,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:11:24,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 11:11:24,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 11:11:24,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 11:11:24,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 11:11:24,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 11:11:24,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 11:11:24,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 11:11:24,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 11:11:24,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 11:11:24,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 11:11:24,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 11:11:24,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 11:11:24,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 11:11:24,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 11:11:24,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:11:24,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:11:24,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:11:24,374 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 11:11:24,389 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:11:24,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:11:24,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:11:24,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:11:24,391 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:11:24,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:11:24,392 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:11:24,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:11:24,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:11:24,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:11:24,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:11:24,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:11:24,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:11:24,393 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:11:24,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:11:24,393 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:11:24,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:11:24,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:11:24,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:11:24,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:11:24,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:11:24,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:11:24,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:11:24,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:11:24,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:11:24,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:11:24,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:11:24,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:11:24,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:11:24,396 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 11:11:24,686 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:11:24,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:11:24,703 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:11:24,704 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:11:24,705 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:11:24,705 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_2x3-2.c [2020-07-21 11:11:24,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e86d3a99b/b114c99dac3a40709c983548fdfb08b6/FLAG4e3060844 [2020-07-21 11:11:25,202 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:11:25,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_2x3-2.c [2020-07-21 11:11:25,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e86d3a99b/b114c99dac3a40709c983548fdfb08b6/FLAG4e3060844 [2020-07-21 11:11:25,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e86d3a99b/b114c99dac3a40709c983548fdfb08b6 [2020-07-21 11:11:25,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:11:25,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:11:25,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:11:25,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:11:25,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:11:25,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:11:25" (1/1) ... [2020-07-21 11:11:25,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31286fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:11:25, skipping insertion in model container [2020-07-21 11:11:25,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:11:25" (1/1) ... [2020-07-21 11:11:25,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:11:25,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:11:25,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:11:25,786 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:11:25,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:11:25,817 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:11:25,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:11:25 WrapperNode [2020-07-21 11:11:25,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:11:25,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:11:25,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:11:25,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:11:25,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:11:25" (1/1) ... [2020-07-21 11:11:25,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:11:25" (1/1) ... [2020-07-21 11:11:25,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:11:25" (1/1) ... [2020-07-21 11:11:25,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:11:25" (1/1) ... [2020-07-21 11:11:25,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:11:25" (1/1) ... [2020-07-21 11:11:25,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:11:25" (1/1) ... [2020-07-21 11:11:25,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:11:25" (1/1) ... [2020-07-21 11:11:25,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:11:25,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:11:25,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:11:25,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:11:25,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:11:25" (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 [2020-07-21 11:11:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:11:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:11:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-07-21 11:11:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:11:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:11:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-07-21 11:11:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:11:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:11:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:11:26,184 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:11:26,185 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 11:11:26,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:11:26 BoogieIcfgContainer [2020-07-21 11:11:26,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:11:26,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:11:26,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:11:26,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:11:26,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:11:25" (1/3) ... [2020-07-21 11:11:26,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe55d27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:11:26, skipping insertion in model container [2020-07-21 11:11:26,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:11:25" (2/3) ... [2020-07-21 11:11:26,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe55d27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:11:26, skipping insertion in model container [2020-07-21 11:11:26,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:11:26" (3/3) ... [2020-07-21 11:11:26,197 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_2x3-2.c [2020-07-21 11:11:26,208 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:11:26,216 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 11:11:26,231 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 11:11:26,257 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:11:26,257 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:11:26,257 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:11:26,257 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:11:26,257 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:11:26,258 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:11:26,258 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:11:26,258 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:11:26,274 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-21 11:11:26,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 11:11:26,280 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:11:26,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:11:26,282 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:11:26,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:11:26,287 INFO L82 PathProgramCache]: Analyzing trace with hash 2001781660, now seen corresponding path program 1 times [2020-07-21 11:11:26,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:11:26,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441000494] [2020-07-21 11:11:26,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:11:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:11:26,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:11:26,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:11:26,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:11:26,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:11:26,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441000494] [2020-07-21 11:11:26,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:11:26,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:11:26,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969378168] [2020-07-21 11:11:26,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:11:26,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:11:26,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:11:26,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:11:26,503 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-07-21 11:11:26,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:11:26,614 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-07-21 11:11:26,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:11:26,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-21 11:11:26,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:11:26,626 INFO L225 Difference]: With dead ends: 30 [2020-07-21 11:11:26,627 INFO L226 Difference]: Without dead ends: 18 [2020-07-21 11:11:26,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:11:26,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-21 11:11:26,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-21 11:11:26,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-21 11:11:26,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-07-21 11:11:26,680 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-07-21 11:11:26,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:11:26,680 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-07-21 11:11:26,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:11:26,681 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-21 11:11:26,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 11:11:26,683 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:11:26,684 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:11:26,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:11:26,901 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:11:26,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:11:26,902 INFO L82 PathProgramCache]: Analyzing trace with hash -118151420, now seen corresponding path program 1 times [2020-07-21 11:11:26,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:11:26,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526698514] [2020-07-21 11:11:26,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:11:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:11:26,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 11:11:26,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:11:27,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 11:11:27,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:11:27,243 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:11:27,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 11:11:27,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526698514] [2020-07-21 11:11:27,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:11:27,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2020-07-21 11:11:27,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113747955] [2020-07-21 11:11:27,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 11:11:27,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:11:27,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 11:11:27,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-21 11:11:27,307 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 8 states. [2020-07-21 11:11:27,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:11:27,396 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-07-21 11:11:27,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:11:27,397 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-07-21 11:11:27,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:11:27,399 INFO L225 Difference]: With dead ends: 25 [2020-07-21 11:11:27,399 INFO L226 Difference]: Without dead ends: 21 [2020-07-21 11:11:27,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 11:11:27,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-21 11:11:27,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-21 11:11:27,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-21 11:11:27,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-07-21 11:11:27,414 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2020-07-21 11:11:27,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:11:27,415 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-07-21 11:11:27,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 11:11:27,416 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-07-21 11:11:27,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 11:11:27,419 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:11:27,419 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:11:27,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:11:27,636 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:11:27,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:11:27,637 INFO L82 PathProgramCache]: Analyzing trace with hash 764931548, now seen corresponding path program 2 times [2020-07-21 11:11:27,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:11:27,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719427021] [2020-07-21 11:11:27,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:11:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:11:27,685 WARN L261 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 37 conjunts are in the unsatisfiable core [2020-07-21 11:11:27,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:11:27,924 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 11:11:27,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:11:28,344 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 11:11:28,399 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 11:11:28,400 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 11:11:28,403 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 11:11:28,406 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 11:11:28,408 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:11:28,411 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 11:11:28,413 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:11:28,414 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:11:28,416 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 11:11:28,421 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 11:11:28,422 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:11:28,424 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 11:11:28,578 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 11:11:28,580 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:11:28,581 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:11:28,583 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:11:28,585 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:11:28,586 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:11:28,587 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:11:28,588 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 11:11:28,590 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:11:28,679 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 11:11:28,691 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 11:11:28,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719427021] [2020-07-21 11:11:28,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:11:28,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2020-07-21 11:11:28,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017388972] [2020-07-21 11:11:28,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-21 11:11:28,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:11:28,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-21 11:11:28,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2020-07-21 11:11:28,696 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 23 states. [2020-07-21 11:11:29,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:11:29,052 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-07-21 11:11:29,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 11:11:29,053 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 25 [2020-07-21 11:11:29,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:11:29,054 INFO L225 Difference]: With dead ends: 22 [2020-07-21 11:11:29,054 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 11:11:29,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=699, Unknown=0, NotChecked=0, Total=870 [2020-07-21 11:11:29,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 11:11:29,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 11:11:29,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 11:11:29,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 11:11:29,057 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-07-21 11:11:29,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:11:29,057 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 11:11:29,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-21 11:11:29,058 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 11:11:29,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 11:11:29,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:11:29,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 11:11:29,343 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-21 11:11:29,344 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:11:29,344 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:11:29,344 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 11:11:29,344 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:11:29,344 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:11:29,345 INFO L268 CegarLoopResult]: For program point sumEXIT(lines 3 9) no Hoare annotation was computed. [2020-07-21 11:11:29,345 INFO L264 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (and (= sum_~m |sum_#in~m|) (= sum_~n |sum_#in~n|) (< 0 sum_~n)) [2020-07-21 11:11:29,346 INFO L268 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-07-21 11:11:29,346 INFO L268 CegarLoopResult]: For program point L4(lines 4 8) no Hoare annotation was computed. [2020-07-21 11:11:29,347 INFO L268 CegarLoopResult]: For program point sumFINAL(lines 3 9) no Hoare annotation was computed. [2020-07-21 11:11:29,347 INFO L271 CegarLoopResult]: At program point sumENTRY(lines 3 9) the Hoare annotation is: true [2020-07-21 11:11:29,347 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-07-21 11:11:29,347 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2020-07-21 11:11:29,347 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed. [2020-07-21 11:11:29,348 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-07-21 11:11:29,348 INFO L268 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-07-21 11:11:29,348 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (and (<= 2 main_~a~0) (<= main_~a~0 2)) [2020-07-21 11:11:29,348 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-07-21 11:11:29,348 INFO L268 CegarLoopResult]: For program point L15-2(lines 11 18) no Hoare annotation was computed. [2020-07-21 11:11:29,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:11:29 BoogieIcfgContainer [2020-07-21 11:11:29,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:11:29,364 INFO L168 Benchmark]: Toolchain (without parser) took 3772.22 ms. Allocated memory was 136.3 MB in the beginning and 252.2 MB in the end (delta: 115.9 MB). Free memory was 100.8 MB in the beginning and 191.7 MB in the end (delta: -90.9 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-07-21 11:11:29,367 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 11:11:29,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.90 ms. Allocated memory is still 136.3 MB. Free memory was 100.3 MB in the beginning and 91.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-07-21 11:11:29,370 INFO L168 Benchmark]: Boogie Preprocessor took 25.07 ms. Allocated memory is still 136.3 MB. Free memory was 91.2 MB in the beginning and 89.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-07-21 11:11:29,372 INFO L168 Benchmark]: RCFGBuilder took 344.31 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 89.8 MB in the beginning and 169.1 MB in the end (delta: -79.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-21 11:11:29,379 INFO L168 Benchmark]: TraceAbstraction took 3169.00 ms. Allocated memory was 200.8 MB in the beginning and 252.2 MB in the end (delta: 51.4 MB). Free memory was 168.4 MB in the beginning and 191.7 MB in the end (delta: -23.3 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-07-21 11:11:29,390 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 226.90 ms. Allocated memory is still 136.3 MB. Free memory was 100.3 MB in the beginning and 91.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.07 ms. Allocated memory is still 136.3 MB. Free memory was 91.2 MB in the beginning and 89.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 344.31 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 89.8 MB in the beginning and 169.1 MB in the end (delta: -79.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3169.00 ms. Allocated memory was 200.8 MB in the beginning and 252.2 MB in the end (delta: 51.4 MB). Free memory was 168.4 MB in the beginning and 191.7 MB in the end (delta: -23.3 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 37 SDslu, 146 SDs, 0 SdLazy, 166 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 61 SyntacticMatches, 7 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 22 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 11424 SizeOfPredicates, 15 NumberOfNonLiveVariables, 162 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 19/36 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...