/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 -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 00:52:51,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:52:51,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:52:51,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:52:51,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:52:51,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:52:51,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:52:51,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:52:51,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:52:51,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:52:51,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:52:51,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:52:51,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:52:51,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:52:51,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:52:51,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:52:51,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:52:51,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:52:51,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:52:51,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:52:51,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:52:51,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:52:51,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:52:51,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:52:51,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 00:52:51,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:52:51,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:52:51,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:52:51,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:52:51,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:52:51,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:52:51,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:52:51,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:52:51,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:52:51,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:52:51,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:52:51,706 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 00:52:51,719 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:52:51,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:52:51,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:52:51,721 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:52:51,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:52:51,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:52:51,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:52:51,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:52:51,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:52:51,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:52:51,723 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:52:51,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:52:51,723 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:52:51,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:52:51,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:52:51,724 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:52:51,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:52:51,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:52:51,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:52:51,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:52:51,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:52:51,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:52:51,725 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:52:52,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:52:52,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:52:52,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:52:52,121 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:52:52,122 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:52:52,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test21-2.c [2020-11-07 00:52:52,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53eec4bfb/1befd388f6864d899147a58d79111c64/FLAG63d777580 [2020-11-07 00:52:52,953 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:52:52,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test21-2.c [2020-11-07 00:52:52,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53eec4bfb/1befd388f6864d899147a58d79111c64/FLAG63d777580 [2020-11-07 00:52:53,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53eec4bfb/1befd388f6864d899147a58d79111c64 [2020-11-07 00:52:53,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:52:53,298 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:52:53,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:52:53,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:52:53,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:52:53,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:53" (1/1) ... [2020-11-07 00:52:53,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@198d421e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:53, skipping insertion in model container [2020-11-07 00:52:53,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:53" (1/1) ... [2020-11-07 00:52:53,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:52:53,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:52:53,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:52:53,535 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:52:53,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:52:53,580 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:52:53,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:53 WrapperNode [2020-11-07 00:52:53,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:52:53,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:52:53,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:52:53,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:52:53,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:53" (1/1) ... [2020-11-07 00:52:53,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:53" (1/1) ... [2020-11-07 00:52:53,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:53" (1/1) ... [2020-11-07 00:52:53,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:53" (1/1) ... [2020-11-07 00:52:53,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:53" (1/1) ... [2020-11-07 00:52:53,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:53" (1/1) ... [2020-11-07 00:52:53,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:53" (1/1) ... [2020-11-07 00:52:53,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:52:53,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:52:53,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:52:53,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:52:53,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:53" (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 00:52:53,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:52:53,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:52:53,733 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:52:53,733 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-11-07 00:52:53,733 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-11-07 00:52:53,733 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-11-07 00:52:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:52:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:52:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:52:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:52:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:52:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 00:52:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-11-07 00:52:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-11-07 00:52:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:52:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-11-07 00:52:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-11-07 00:52:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:52:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:52:53,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:52:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:52:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:52:53,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:52:54,314 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:52:54,314 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 00:52:54,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:54 BoogieIcfgContainer [2020-11-07 00:52:54,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:52:54,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:52:54,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:52:54,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:52:54,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:52:53" (1/3) ... [2020-11-07 00:52:54,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b46952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:54, skipping insertion in model container [2020-11-07 00:52:54,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:53" (2/3) ... [2020-11-07 00:52:54,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b46952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:54, skipping insertion in model container [2020-11-07 00:52:54,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:54" (3/3) ... [2020-11-07 00:52:54,358 INFO L111 eAbstractionObserver]: Analyzing ICFG test21-2.c [2020-11-07 00:52:54,381 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:52:54,387 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:52:54,403 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:52:54,443 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:52:54,443 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:52:54,443 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:52:54,444 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:52:54,444 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:52:54,444 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:52:54,444 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:52:54,444 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:52:54,474 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-11-07 00:52:54,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-07 00:52:54,494 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:52:54,495 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 00:52:54,496 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:52:54,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:52:54,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1388877468, now seen corresponding path program 1 times [2020-11-07 00:52:54,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:52:54,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43738310] [2020-11-07 00:52:54,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:52:54,639 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:52:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:52:54,879 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:52:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:52:55,006 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:52:55,078 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:52:55,078 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:52:55,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:52:55,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:52:55 BoogieIcfgContainer [2020-11-07 00:52:55,101 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:52:55,104 INFO L168 Benchmark]: Toolchain (without parser) took 1809.54 ms. Allocated memory is still 151.0 MB. Free memory was 127.9 MB in the beginning and 115.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 13.4 MB. Max. memory is 8.0 GB. [2020-11-07 00:52:55,105 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:52:55,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.93 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 117.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:52:55,111 INFO L168 Benchmark]: Boogie Preprocessor took 49.94 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:52:55,113 INFO L168 Benchmark]: RCFGBuilder took 684.25 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 96.3 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-11-07 00:52:55,114 INFO L168 Benchmark]: TraceAbstraction took 754.46 ms. Allocated memory is still 151.0 MB. Free memory was 134.3 MB in the beginning and 115.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-11-07 00:52:55,118 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 278.93 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 117.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.94 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 684.25 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 96.3 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 754.46 ms. Allocated memory is still 151.0 MB. Free memory was 134.3 MB in the beginning and 115.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 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; [L34] CALL init() [L15] d1.a = __VERIFIER_nondet_int() [L16] d1.b = __VERIFIER_nondet_int() [L18] d2.a = __VERIFIER_nondet_int() [L19] d2.b = __VERIFIER_nondet_int() [L34] RET init() [L35] CALL, EXPR get_dummy() [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] RET, EXPR get_dummy() [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L35] CALL, EXPR get_dummy() [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] RET, EXPR get_dummy() [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L36] COND TRUE pd1 != 0 && pd1 == pd2 [L37] CALL, EXPR check(pd1, pd2) [L29] EXPR s1->a [L29] EXPR s2->b [L29] return s1->a == s2->b; [L37] RET, EXPR check(pd1, pd2) [L37] COND TRUE !check(pd1, pd2) [L44] CALL reach_error() [L3] __assert_fail("0", "test21-2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, 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: No data available, 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...