/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --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/test21-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:16:53,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:16:53,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:16:53,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 05:16:53,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 05:16:53,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 05:16:53,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 05:16:53,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 05:16:53,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 05:16:53,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 05:16:53,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 05:16:53,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 05:16:53,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:16:53,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:16:53,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:16:53,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:16:53,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:16:53,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:16:53,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:16:53,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:16:53,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:16:53,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:16:53,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:16:53,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:16:53,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 05:16:53,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 05:16:53,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 05:16:53,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 05:16:53,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 05:16:53,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 05:16:53,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 05:16:53,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 05:16:53,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 05:16:53,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 05:16:53,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 05:16:53,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 05:16:53,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 05:16:53,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 05:16:53,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:16:53,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:16:53,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:16:53,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 05:16:53,811 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:16:53,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:16:53,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:16:53,818 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:16:53,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:16:53,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:16:53,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:16:53,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:16:53,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:16:53,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:16:53,820 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:16:53,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:16:53,821 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:16:53,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:16:53,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:16:53,822 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:16:53,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:16:53,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:16:53,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:16:53,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:16:53,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:16:53,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:16:53,823 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:16:54,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:16:54,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:16:54,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:16:54,394 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:16:54,395 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:16:54,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test21-2.c [2020-11-07 05:16:54,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/966cf6249/4da44c4caca14c9aa3180bdd33a8f770/FLAGe06eacfdc [2020-11-07 05:16:55,226 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:16:55,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test21-2.c [2020-11-07 05:16:55,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/966cf6249/4da44c4caca14c9aa3180bdd33a8f770/FLAGe06eacfdc [2020-11-07 05:16:55,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/966cf6249/4da44c4caca14c9aa3180bdd33a8f770 [2020-11-07 05:16:55,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:16:55,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:16:55,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:16:55,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:16:55,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:16:55,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:16:55" (1/1) ... [2020-11-07 05:16:55,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1e7321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:55, skipping insertion in model container [2020-11-07 05:16:55,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:16:55" (1/1) ... [2020-11-07 05:16:55,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:16:55,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:16:55,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:16:55,793 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:16:55,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:16:55,834 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:16:55,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:55 WrapperNode [2020-11-07 05:16:55,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:16:55,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:16:55,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:16:55,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:16:55,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:55" (1/1) ... [2020-11-07 05:16:55,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:55" (1/1) ... [2020-11-07 05:16:55,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:55" (1/1) ... [2020-11-07 05:16:55,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:55" (1/1) ... [2020-11-07 05:16:55,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:55" (1/1) ... [2020-11-07 05:16:55,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:55" (1/1) ... [2020-11-07 05:16:55,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:55" (1/1) ... [2020-11-07 05:16:55,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:16:55,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:16:55,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:16:55,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:16:55,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:55" (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 [2020-11-07 05:16:55,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:16:55,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:16:55,981 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:16:55,981 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-11-07 05:16:55,981 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-11-07 05:16:55,981 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-11-07 05:16:55,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:16:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:16:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:16:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:16:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:16:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:16:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-11-07 05:16:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-11-07 05:16:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:16:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-11-07 05:16:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-11-07 05:16:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:16:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:16:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:16:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:16:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:16:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:16:56,441 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:16:56,442 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 05:16:56,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:16:56 BoogieIcfgContainer [2020-11-07 05:16:56,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:16:56,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:16:56,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:16:56,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:16:56,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:16:55" (1/3) ... [2020-11-07 05:16:56,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e321309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:16:56, skipping insertion in model container [2020-11-07 05:16:56,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:55" (2/3) ... [2020-11-07 05:16:56,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e321309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:16:56, skipping insertion in model container [2020-11-07 05:16:56,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:16:56" (3/3) ... [2020-11-07 05:16:56,456 INFO L111 eAbstractionObserver]: Analyzing ICFG test21-2.c [2020-11-07 05:16:56,479 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:16:56,490 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:16:56,526 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:16:56,591 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:16:56,591 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:16:56,591 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:16:56,591 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:16:56,592 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:16:56,592 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:16:56,592 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:16:56,592 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:16:56,612 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-11-07 05:16:56,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-07 05:16:56,626 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:56,627 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:16:56,627 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:56,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:56,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1388877468, now seen corresponding path program 1 times [2020-11-07 05:16:56,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:56,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286800759] [2020-11-07 05:16:56,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:16:56,946 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:16:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 05:16:57,022 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 05:16:57,069 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 05:16:57,070 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 05:16:57,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:16:57,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:16:57 BoogieIcfgContainer [2020-11-07 05:16:57,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 05:16:57,200 INFO L168 Benchmark]: Toolchain (without parser) took 1648.49 ms. Allocated memory is still 159.4 MB. Free memory was 136.4 MB in the beginning and 116.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.2 MB. Max. memory is 8.0 GB. [2020-11-07 05:16:57,201 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 159.4 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 05:16:57,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.27 ms. Allocated memory is still 159.4 MB. Free memory was 135.7 MB in the beginning and 126.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 05:16:57,209 INFO L168 Benchmark]: Boogie Preprocessor took 47.03 ms. Allocated memory is still 159.4 MB. Free memory was 126.1 MB in the beginning and 124.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 05:16:57,210 INFO L168 Benchmark]: RCFGBuilder took 559.65 ms. Allocated memory is still 159.4 MB. Free memory was 124.5 MB in the beginning and 137.4 MB in the end (delta: -12.9 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. [2020-11-07 05:16:57,213 INFO L168 Benchmark]: TraceAbstraction took 748.61 ms. Allocated memory is still 159.4 MB. Free memory was 136.9 MB in the beginning and 116.5 MB in the end (delta: 20.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-11-07 05:16:57,220 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 159.4 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 280.27 ms. Allocated memory is still 159.4 MB. Free memory was 135.7 MB in the beginning and 126.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.03 ms. Allocated memory is still 159.4 MB. Free memory was 126.1 MB in the beginning and 124.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 559.65 ms. Allocated memory is still 159.4 MB. Free memory was 124.5 MB in the beginning and 137.4 MB in the end (delta: -12.9 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 748.61 ms. Allocated memory is still 159.4 MB. Free memory was 136.9 MB in the beginning and 116.5 MB in the end (delta: 20.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] struct dummy d1, d2; VAL [\old(d1)=52, \old(d1)=60, \old(d2)=54, \old(d2)=58, d1={9:0}, d2={3:0}] [L34] CALL init() VAL [d1={9:0}, d2={3:0}] [L15] d1.a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-1, d1={9:0}, d2={3:0}] [L16] d1.b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-2, d1={9:0}, d2={3:0}] [L18] d2.a = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-3, d1={9:0}, d2={3:0}] [L19] d2.b = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-4, d1={9:0}, d2={3:0}] [L34] RET init() VAL [d1={9:0}, d2={3:0}] [L35] CALL, EXPR get_dummy() VAL [d1={9:0}, d2={3:0}] [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={9:0}, d1={9:0}, d2={3:0}] [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); VAL [\result={9:0}, __VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={9:0}, d1={9:0}, d2={3:0}] [L35] RET, EXPR get_dummy() VAL [d1={9:0}, d2={3:0}, get_dummy()={9:0}] [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); VAL [d1={9:0}, d2={3:0}, get_dummy()={9:0}, pd1={9:0}] [L35] CALL, EXPR get_dummy() VAL [d1={9:0}, d2={3:0}] [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={9:0}, d1={9:0}, d2={3:0}] [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); VAL [\result={9:0}, __VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={9:0}, d1={9:0}, d2={3:0}] [L35] RET, EXPR get_dummy() VAL [d1={9:0}, d2={3:0}, get_dummy()={9:0}, pd1={9:0}] [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); VAL [d1={9:0}, d2={3:0}, get_dummy()={9:0}, pd1={9:0}, pd2={9:0}] [L36] COND TRUE pd1 != 0 && pd1 == pd2 VAL [d1={9:0}, d2={3:0}, pd1={9:0}, pd2={9:0}] [L37] CALL, EXPR check(pd1, pd2) VAL [d1={9:0}, d2={3:0}, s1={9:0}, s2={9:0}] [L29] EXPR s1->a VAL [d1={9:0}, d2={3:0}, s1={9:0}, s1={9:0}, s1->a=-1, s2={9:0}, s2={9:0}] [L29] EXPR s2->b VAL [d1={9:0}, d2={3:0}, s1={9:0}, s1={9:0}, s1->a=-1, s2={9:0}, s2={9:0}, s2->b=-2] [L29] return s1->a == s2->b; VAL [\result=0, d1={9:0}, d2={3:0}, s1={9:0}, s1={9:0}, s1->a=-1, s2={9:0}, s2={9:0}, s2->b=-2] [L37] RET, EXPR check(pd1, pd2) VAL [check(pd1, pd2)=0, d1={9:0}, d2={3:0}, pd1={9:0}, pd2={9:0}] [L37] COND TRUE !check(pd1, pd2) VAL [check(pd1, pd2)=0, d1={9:0}, d2={3:0}, pd1={9:0}, pd2={9:0}] [L44] CALL reach_error() VAL [d1={9:0}, d2={3:0}] [L3] __assert_fail("0", "test21-2.c", 3, "reach_error") VAL [d1={9:0}, d2={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 2, 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=74occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 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...