/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test26-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:49:50,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:49:50,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:49:50,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:49:50,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:49:50,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:49:50,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:49:50,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:49:50,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:49:50,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:49:50,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:49:50,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:49:50,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:49:50,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:49:50,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:49:50,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:49:50,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:49:50,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:49:50,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:49:50,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:49:50,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:49:50,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:49:50,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:49:50,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:49:50,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:49:50,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:49:50,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:49:50,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:49:50,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:49:50,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:49:50,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:49:50,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:49:50,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:49:50,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:49:50,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:49:50,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:49:50,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:49:50,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:49:50,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:49:50,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:49:50,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:49:50,466 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 06:49:50,489 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:49:50,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:49:50,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:49:50,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:49:50,491 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:49:50,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:49:50,491 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:49:50,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:49:50,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:49:50,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:49:50,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:49:50,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:49:50,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:49:50,493 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:49:50,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:49:50,493 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:49:50,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:49:50,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:49:50,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:49:50,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:49:50,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:49:50,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:49:50,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:49:50,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:49:50,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:49:50,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:49:50,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:49:50,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:49:50,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:49:50,496 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 -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:49:50,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:49:50,880 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:49:50,884 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:49:50,886 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:49:50,886 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:49:50,887 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test26-2.c [2020-08-19 06:49:50,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/128773915/33e8d33d478e4080a75ae0803cd7483f/FLAGef66c8d9d [2020-08-19 06:49:51,456 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:49:51,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test26-2.c [2020-08-19 06:49:51,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/128773915/33e8d33d478e4080a75ae0803cd7483f/FLAGef66c8d9d [2020-08-19 06:49:51,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/128773915/33e8d33d478e4080a75ae0803cd7483f [2020-08-19 06:49:51,863 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:49:51,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:49:51,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:49:51,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:49:51,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:49:51,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:49:51" (1/1) ... [2020-08-19 06:49:51,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df9f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:51, skipping insertion in model container [2020-08-19 06:49:51,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:49:51" (1/1) ... [2020-08-19 06:49:51,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:49:51,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:49:52,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:49:52,076 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:49:52,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:49:52,105 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:49:52,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:52 WrapperNode [2020-08-19 06:49:52,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:49:52,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:49:52,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:49:52,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:49:52,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:52" (1/1) ... [2020-08-19 06:49:52,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:52" (1/1) ... [2020-08-19 06:49:52,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:52" (1/1) ... [2020-08-19 06:49:52,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:52" (1/1) ... [2020-08-19 06:49:52,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:52" (1/1) ... [2020-08-19 06:49:52,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:52" (1/1) ... [2020-08-19 06:49:52,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:52" (1/1) ... [2020-08-19 06:49:52,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:49:52,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:49:52,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:49:52,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:49:52,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-19 06:49:52,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:49:52,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:49:52,281 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2020-08-19 06:49:52,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:49:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:49:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2020-08-19 06:49:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:49:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:49:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:49:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:49:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:49:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 06:49:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:49:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:49:52,489 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:49:52,490 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 06:49:52,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:49:52 BoogieIcfgContainer [2020-08-19 06:49:52,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:49:52,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:49:52,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:49:52,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:49:52,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:49:51" (1/3) ... [2020-08-19 06:49:52,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79567e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:49:52, skipping insertion in model container [2020-08-19 06:49:52,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:52" (2/3) ... [2020-08-19 06:49:52,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79567e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:49:52, skipping insertion in model container [2020-08-19 06:49:52,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:49:52" (3/3) ... [2020-08-19 06:49:52,502 INFO L109 eAbstractionObserver]: Analyzing ICFG test26-2.c [2020-08-19 06:49:52,513 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:49:52,520 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:49:52,533 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:49:52,555 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:49:52,555 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:49:52,555 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:49:52,556 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:49:52,556 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:49:52,556 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:49:52,556 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:49:52,556 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:49:52,572 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-08-19 06:49:52,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 06:49:52,578 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:52,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:49:52,579 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:52,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:52,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1573149608, now seen corresponding path program 1 times [2020-08-19 06:49:52,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:52,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595241822] [2020-08-19 06:49:52,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:49:52,724 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:49:52,725 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:49:52,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:49:52,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:49:52 BoogieIcfgContainer [2020-08-19 06:49:52,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:49:52,752 INFO L168 Benchmark]: Toolchain (without parser) took 885.15 ms. Allocated memory was 140.0 MB in the beginning and 199.2 MB in the end (delta: 59.2 MB). Free memory was 103.5 MB in the beginning and 150.8 MB in the end (delta: -47.3 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:52,753 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-19 06:49:52,754 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.97 ms. Allocated memory is still 140.0 MB. Free memory was 103.3 MB in the beginning and 93.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:52,755 INFO L168 Benchmark]: Boogie Preprocessor took 112.40 ms. Allocated memory was 140.0 MB in the beginning and 199.2 MB in the end (delta: 59.2 MB). Free memory was 93.1 MB in the beginning and 176.6 MB in the end (delta: -83.5 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:52,756 INFO L168 Benchmark]: RCFGBuilder took 274.50 ms. Allocated memory is still 199.2 MB. Free memory was 176.6 MB in the beginning and 163.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:52,757 INFO L168 Benchmark]: TraceAbstraction took 253.46 ms. Allocated memory is still 199.2 MB. Free memory was 163.5 MB in the beginning and 150.8 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:52,761 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 239.97 ms. Allocated memory is still 140.0 MB. Free memory was 103.3 MB in the beginning and 93.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.40 ms. Allocated memory was 140.0 MB in the beginning and 199.2 MB in the end (delta: 59.2 MB). Free memory was 93.1 MB in the beginning and 176.6 MB in the end (delta: -83.5 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 274.50 ms. Allocated memory is still 199.2 MB. Free memory was 176.6 MB in the beginning and 163.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 253.46 ms. Allocated memory is still 199.2 MB. Free memory was 163.5 MB in the beginning and 150.8 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 24]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L3-L5] struct dummy { int a, b; } global = {0, 1}; [L14] struct dummy *pd = &global; [L16] CALL assign(&pd->b, &pd->b) [L9] EXPR \read(*pb) [L9] *pa = *pb [L16] RET assign(&pd->b, &pd->b) [L18] EXPR pd->a [L18] EXPR global.b [L18] COND TRUE pd->a != global.b [L24] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...