/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/1_3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 17:25:30,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 17:25:30,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 17:25:30,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 17:25:30,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 17:25:30,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 17:25:30,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 17:25:30,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 17:25:30,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 17:25:30,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 17:25:30,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 17:25:30,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 17:25:30,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 17:25:30,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 17:25:30,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 17:25:30,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 17:25:30,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 17:25:30,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 17:25:30,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 17:25:30,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 17:25:30,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 17:25:30,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 17:25:30,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 17:25:30,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 17:25:30,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 17:25:30,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 17:25:30,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 17:25:30,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 17:25:30,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 17:25:30,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 17:25:30,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 17:25:30,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 17:25:30,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 17:25:30,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 17:25:30,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 17:25:30,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 17:25:30,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 17:25:30,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 17:25:30,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 17:25:30,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 17:25:30,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 17:25:30,319 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 17:25:30,329 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 17:25:30,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 17:25:30,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 17:25:30,330 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 17:25:30,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 17:25:30,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 17:25:30,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 17:25:30,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 17:25:30,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 17:25:30,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 17:25:30,332 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 17:25:30,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 17:25:30,332 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 17:25:30,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 17:25:30,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 17:25:30,333 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 17:25:30,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 17:25:30,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 17:25:30,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:25:30,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 17:25:30,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 17:25:30,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 17:25:30,336 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-17 17:25:30,631 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 17:25:30,644 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 17:25:30,647 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 17:25:30,649 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 17:25:30,649 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 17:25:30,650 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/1_3.i [2020-07-17 17:25:30,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03cf5c869/021ace4080e94b1d8573df730f43c216/FLAGd511815fa [2020-07-17 17:25:31,176 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 17:25:31,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/1_3.i [2020-07-17 17:25:31,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03cf5c869/021ace4080e94b1d8573df730f43c216/FLAGd511815fa [2020-07-17 17:25:31,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03cf5c869/021ace4080e94b1d8573df730f43c216 [2020-07-17 17:25:31,608 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 17:25:31,611 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 17:25:31,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 17:25:31,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 17:25:31,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 17:25:31,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:25:31" (1/1) ... [2020-07-17 17:25:31,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5952304e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:25:31, skipping insertion in model container [2020-07-17 17:25:31,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:25:31" (1/1) ... [2020-07-17 17:25:31,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 17:25:31,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 17:25:31,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:25:31,866 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 17:25:31,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:25:31,901 INFO L208 MainTranslator]: Completed translation [2020-07-17 17:25:31,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:25:31 WrapperNode [2020-07-17 17:25:31,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 17:25:31,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 17:25:31,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 17:25:31,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 17:25:32,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:25:31" (1/1) ... [2020-07-17 17:25:32,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:25:31" (1/1) ... [2020-07-17 17:25:32,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:25:31" (1/1) ... [2020-07-17 17:25:32,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:25:31" (1/1) ... [2020-07-17 17:25:32,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:25:31" (1/1) ... [2020-07-17 17:25:32,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:25:31" (1/1) ... [2020-07-17 17:25:32,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:25:31" (1/1) ... [2020-07-17 17:25:32,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 17:25:32,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 17:25:32,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 17:25:32,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 17:25:32,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:25:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:25:32,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 17:25:32,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 17:25:32,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-17 17:25:32,094 INFO L138 BoogieDeclarations]: Found implementation of procedure getrr [2020-07-17 17:25:32,094 INFO L138 BoogieDeclarations]: Found implementation of procedure getPtr [2020-07-17 17:25:32,094 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr [2020-07-17 17:25:32,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 17:25:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 17:25:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-17 17:25:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 17:25:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 17:25:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure getrr [2020-07-17 17:25:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 17:25:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 17:25:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure getPtr [2020-07-17 17:25:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr [2020-07-17 17:25:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 17:25:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 17:25:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 17:25:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 17:25:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 17:25:32,318 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 17:25:32,318 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 17:25:32,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:25:32 BoogieIcfgContainer [2020-07-17 17:25:32,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 17:25:32,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 17:25:32,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 17:25:32,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 17:25:32,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 05:25:31" (1/3) ... [2020-07-17 17:25:32,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344c92e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:25:32, skipping insertion in model container [2020-07-17 17:25:32,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:25:31" (2/3) ... [2020-07-17 17:25:32,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344c92e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:25:32, skipping insertion in model container [2020-07-17 17:25:32,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:25:32" (3/3) ... [2020-07-17 17:25:32,330 INFO L109 eAbstractionObserver]: Analyzing ICFG 1_3.i [2020-07-17 17:25:32,344 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 17:25:32,353 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 17:25:32,368 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 17:25:32,393 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 17:25:32,393 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 17:25:32,394 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 17:25:32,394 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 17:25:32,394 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 17:25:32,394 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 17:25:32,398 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 17:25:32,398 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 17:25:32,425 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-07-17 17:25:32,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-17 17:25:32,437 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:25:32,437 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] [2020-07-17 17:25:32,438 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:25:32,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:25:32,443 INFO L82 PathProgramCache]: Analyzing trace with hash 538172514, now seen corresponding path program 1 times [2020-07-17 17:25:32,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:25:32,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986630459] [2020-07-17 17:25:32,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:25:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:25:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:25:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:25:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:25:32,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:25:32,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986630459] [2020-07-17 17:25:32,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:25:32,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-17 17:25:32,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499705815] [2020-07-17 17:25:32,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-17 17:25:32,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:25:32,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-17 17:25:32,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-07-17 17:25:32,896 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 11 states. [2020-07-17 17:25:33,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:25:33,324 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2020-07-17 17:25:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-17 17:25:33,326 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-07-17 17:25:33,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:25:33,335 INFO L225 Difference]: With dead ends: 64 [2020-07-17 17:25:33,335 INFO L226 Difference]: Without dead ends: 39 [2020-07-17 17:25:33,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-07-17 17:25:33,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-17 17:25:33,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-07-17 17:25:33,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-17 17:25:33,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 38 transitions. [2020-07-17 17:25:33,390 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 38 transitions. Word has length 30 [2020-07-17 17:25:33,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:25:33,391 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 38 transitions. [2020-07-17 17:25:33,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-17 17:25:33,391 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 38 transitions. [2020-07-17 17:25:33,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-17 17:25:33,393 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:25:33,393 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-17 17:25:33,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 17:25:33,394 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:25:33,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:25:33,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1533664090, now seen corresponding path program 1 times [2020-07-17 17:25:33,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:25:33,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98428354] [2020-07-17 17:25:33,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:25:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:25:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:25:33,484 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 17:25:33,485 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 17:25:33,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 17:25:33,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 05:25:33 BoogieIcfgContainer [2020-07-17 17:25:33,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 17:25:33,534 INFO L168 Benchmark]: Toolchain (without parser) took 1922.94 ms. Allocated memory was 145.8 MB in the beginning and 235.9 MB in the end (delta: 90.2 MB). Free memory was 102.3 MB in the beginning and 194.3 MB in the end (delta: -92.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 17:25:33,535 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 17:25:33,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.50 ms. Allocated memory is still 145.8 MB. Free memory was 101.8 MB in the beginning and 92.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-17 17:25:33,537 INFO L168 Benchmark]: Boogie Preprocessor took 130.46 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 92.0 MB in the beginning and 180.4 MB in the end (delta: -88.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-17 17:25:33,538 INFO L168 Benchmark]: RCFGBuilder took 288.83 ms. Allocated memory is still 201.9 MB. Free memory was 180.4 MB in the beginning and 164.2 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-07-17 17:25:33,539 INFO L168 Benchmark]: TraceAbstraction took 1207.76 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 163.6 MB in the beginning and 194.3 MB in the end (delta: -30.7 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-07-17 17:25:33,544 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 289.50 ms. Allocated memory is still 145.8 MB. Free memory was 101.8 MB in the beginning and 92.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.46 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 92.0 MB in the beginning and 180.4 MB in the end (delta: -88.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 288.83 ms. Allocated memory is still 201.9 MB. Free memory was 180.4 MB in the beginning and 164.2 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1207.76 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 163.6 MB in the beginning and 194.3 MB in the end (delta: -30.7 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L50] rr * ptr1 = 0; VAL [ptr1={0:0}] [L51] CALL, EXPR getPtr() [L37] CALL, EXPR getrr() [L30] rr * r = (rr *)malloc(sizeof *r); VAL [malloc(sizeof *r)={-1:0}, r={-1:0}] [L31] r -> state = 0 VAL [malloc(sizeof *r)={-1:0}, r={-1:0}] [L32] return r; VAL [\result={-1:0}, malloc(sizeof *r)={-1:0}, r={-1:0}] [L37] RET, EXPR getrr() VAL [getrr()={-1:0}] [L37] rr * r = getrr(); VAL [getrr()={-1:0}, r={-1:0}] [L38] r -> state = 1 VAL [r={-1:0}] [L39] return r; VAL [\result={-1:0}, r={-1:0}] [L51] RET, EXPR getPtr() VAL [getPtr()={-1:0}, ptr1={0:0}] [L51] ptr1 = getPtr() VAL [getPtr()={-1:0}, ptr1={-1:0}] [L52] CALL freePtr(ptr1) VAL [ptr={-1:0}] [L44] EXPR ptr -> state VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=1] [L44] (ptr -> state == 1) ? (0) : __blast_assert () VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=1] [L45] ptr -> state = 2 VAL [ptr={-1:0}, ptr={-1:0}] [L52] RET freePtr(ptr1) VAL [ptr1={-1:0}] [L54] CALL freePtr(ptr1) VAL [ptr={-1:0}] [L44] EXPR ptr -> state VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=2] [L44] (ptr -> state == 1) ? (0) : __blast_assert () VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=2] [L44] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 35 SDslu, 157 SDs, 0 SdLazy, 178 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 3074 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...