java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/ldv-regression/1_3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:45:48,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:45:48,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:45:48,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 01:45:48,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:45:48,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:45:48,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:45:48,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:45:48,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:45:48,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:45:48,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:45:48,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:45:48,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:45:48,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:45:48,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:45:48,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 01:45:48,301 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:45:48,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:45:48,302 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:45:48,302 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:45:48,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:45:48,303 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:45:48,303 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:45:48,303 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:45:48,304 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:45:48,304 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:45:48,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:45:48,305 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:45:48,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:45:48,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:45:48,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:45:48,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:45:48,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:45:48,306 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:45:48,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:45:48,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:45:48,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:45:48,307 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:45:48,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:45:48,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:45:48,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:45:48,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:45:48,308 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:45:48,308 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:45:48,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:45:48,308 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:45:48,335 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:45:48,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:45:48,357 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:45:48,358 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:45:48,358 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:45:48,359 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/1_3.i [2019-09-10 01:45:48,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/775d710f1/0d7f0b3e303c4199926edb9a1dac1596/FLAGf9b7337d5 [2019-09-10 01:45:48,897 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:45:48,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/1_3.i [2019-09-10 01:45:48,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/775d710f1/0d7f0b3e303c4199926edb9a1dac1596/FLAGf9b7337d5 [2019-09-10 01:45:49,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/775d710f1/0d7f0b3e303c4199926edb9a1dac1596 [2019-09-10 01:45:49,300 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:45:49,301 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:45:49,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:45:49,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:45:49,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:45:49,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:45:49" (1/1) ... [2019-09-10 01:45:49,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f35a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:49, skipping insertion in model container [2019-09-10 01:45:49,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:45:49" (1/1) ... [2019-09-10 01:45:49,319 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:45:49,338 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:45:49,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:45:49,596 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:45:49,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:45:49,650 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:45:49,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:49 WrapperNode [2019-09-10 01:45:49,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:45:49,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:45:49,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:45:49,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:45:49,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:49" (1/1) ... [2019-09-10 01:45:49,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:49" (1/1) ... [2019-09-10 01:45:49,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:49" (1/1) ... [2019-09-10 01:45:49,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:49" (1/1) ... [2019-09-10 01:45:49,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:49" (1/1) ... [2019-09-10 01:45:49,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:49" (1/1) ... [2019-09-10 01:45:49,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:49" (1/1) ... [2019-09-10 01:45:49,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:45:49,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:45:49,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:45:49,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:45:49,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:49" (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 [2019-09-10 01:45:49,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:45:49,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:45:49,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2019-09-10 01:45:49,875 INFO L138 BoogieDeclarations]: Found implementation of procedure getrr [2019-09-10 01:45:49,876 INFO L138 BoogieDeclarations]: Found implementation of procedure getPtr [2019-09-10 01:45:49,876 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr [2019-09-10 01:45:49,876 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:45:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:45:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2019-09-10 01:45:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-09-10 01:45:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 01:45:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 01:45:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure getrr [2019-09-10 01:45:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 01:45:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:45:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure getPtr [2019-09-10 01:45:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr [2019-09-10 01:45:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:45:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:45:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:45:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:45:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:45:50,145 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:45:50,146 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 01:45:50,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:45:50 BoogieIcfgContainer [2019-09-10 01:45:50,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:45:50,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:45:50,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:45:50,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:45:50,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:45:49" (1/3) ... [2019-09-10 01:45:50,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d11d6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:45:50, skipping insertion in model container [2019-09-10 01:45:50,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:49" (2/3) ... [2019-09-10 01:45:50,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d11d6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:45:50, skipping insertion in model container [2019-09-10 01:45:50,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:45:50" (3/3) ... [2019-09-10 01:45:50,156 INFO L109 eAbstractionObserver]: Analyzing ICFG 1_3.i [2019-09-10 01:45:50,180 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:45:50,188 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:45:50,205 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:45:50,234 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:45:50,234 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:45:50,234 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:45:50,234 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:45:50,234 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:45:50,235 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:45:50,235 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:45:50,235 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:45:50,251 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-09-10 01:45:50,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-10 01:45:50,262 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:50,263 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:45:50,265 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:50,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:50,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1862665640, now seen corresponding path program 1 times [2019-09-10 01:45:50,274 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:50,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:50,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:50,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:50,328 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:50,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:45:50,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:45:50,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 01:45:50,623 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:50,629 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 01:45:50,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 01:45:50,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 01:45:50,645 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 7 states. [2019-09-10 01:45:50,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:50,762 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2019-09-10 01:45:50,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 01:45:50,764 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2019-09-10 01:45:50,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:50,772 INFO L225 Difference]: With dead ends: 33 [2019-09-10 01:45:50,773 INFO L226 Difference]: Without dead ends: 27 [2019-09-10 01:45:50,775 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-10 01:45:50,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-09-10 01:45:50,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-09-10 01:45:50,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-10 01:45:50,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2019-09-10 01:45:50,817 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 20 [2019-09-10 01:45:50,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:50,818 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2019-09-10 01:45:50,818 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 01:45:50,818 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2019-09-10 01:45:50,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-10 01:45:50,819 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:50,819 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 01:45:50,820 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:50,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:50,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1146014323, now seen corresponding path program 1 times [2019-09-10 01:45:50,821 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:50,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:50,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:50,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:50,823 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:45:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:45:50,893 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-10 01:45:50,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:45:50 BoogieIcfgContainer [2019-09-10 01:45:50,922 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:45:50,925 INFO L168 Benchmark]: Toolchain (without parser) took 1622.53 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 94.0 MB in the beginning and 125.6 MB in the end (delta: -31.6 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:50,926 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 112.5 MB in the beginning and 112.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:45:50,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.51 ms. Allocated memory is still 137.9 MB. Free memory was 93.6 MB in the beginning and 84.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:50,929 INFO L168 Benchmark]: Boogie Preprocessor took 158.33 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 84.0 MB in the beginning and 177.1 MB in the end (delta: -93.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:50,930 INFO L168 Benchmark]: RCFGBuilder took 336.74 ms. Allocated memory is still 200.8 MB. Free memory was 177.1 MB in the beginning and 162.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:50,931 INFO L168 Benchmark]: TraceAbstraction took 774.02 ms. Allocated memory is still 200.8 MB. Free memory was 162.0 MB in the beginning and 125.6 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:50,935 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 112.5 MB in the beginning and 112.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 349.51 ms. Allocated memory is still 137.9 MB. Free memory was 93.6 MB in the beginning and 84.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 158.33 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 84.0 MB in the beginning and 177.1 MB in the end (delta: -93.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 336.74 ms. Allocated memory is still 200.8 MB. Free memory was 177.1 MB in the beginning and 162.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 774.02 ms. Allocated memory is still 200.8 MB. Free memory was 162.0 MB in the beginning and 125.6 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 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: [L51] rr * ptr1 = 0; VAL [ptr1={0:0}] [L52] CALL, EXPR getPtr() [L38] CALL, EXPR getrr() [L31] rr * r = (rr *)malloc(sizeof *r); [L32] r -> state = 0 [L33] return r; VAL [\result={3:0}, malloc(sizeof *r)={3:0}, r={3:0}] [L38] RET, EXPR getrr() VAL [getrr()={3:0}] [L38] rr * r = getrr(); [L39] r -> state = 1 [L40] return r; VAL [\result={3:0}, r={3:0}] [L52] RET, EXPR getPtr() VAL [getPtr()={3:0}, ptr1={0:0}] [L52] ptr1 = getPtr() [L53] CALL freePtr(ptr1) VAL [ptr={3:0}] [L45] EXPR ptr -> state VAL [ptr={3:0}, ptr={3:0}, ptr -> state=1] [L45] (ptr -> state == 1) ? (0) : __blast_assert () VAL [ptr={3:0}, ptr={3:0}, ptr -> state=1] [L46] ptr -> state = 2 VAL [ptr={3:0}, ptr={3:0}] [L53] RET freePtr(ptr1) VAL [ptr1={3:0}] [L55] CALL freePtr(ptr1) VAL [ptr={3:0}] [L45] EXPR ptr -> state VAL [ptr={3:0}, ptr={3:0}, ptr -> state=2] [L45] (ptr -> state == 1) ? (0) : __blast_assert () VAL [ptr={3:0}, ptr={3:0}, ptr -> state=2] [L45] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 32 locations, 1 error locations. UNSAFE Result, 0.6s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 26 SDtfs, 3 SDslu, 110 SDs, 0 SdLazy, 38 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 969 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...