/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/loops/trex01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:21:17,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:21:17,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:21:17,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 02:21:17,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 02:21:17,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 02:21:17,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 02:21:17,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 02:21:17,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 02:21:17,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 02:21:17,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 02:21:17,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 02:21:17,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:21:17,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:21:17,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:21:17,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:21:17,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:21:17,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:21:17,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:21:17,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:21:17,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:21:17,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:21:17,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:21:17,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:21:17,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 02:21:17,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 02:21:17,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 02:21:17,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 02:21:17,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 02:21:17,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 02:21:17,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 02:21:17,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 02:21:17,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 02:21:17,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 02:21:17,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 02:21:17,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 02:21:17,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 02:21:17,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 02:21:17,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:21:17,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:21:17,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:21:17,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:21:17,733 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:21:17,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:21:17,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:21:17,736 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:21:17,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:21:17,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:21:17,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:21:17,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:21:17,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:21:17,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:21:17,737 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:21:17,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:21:17,737 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:21:17,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:21:17,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:21:17,738 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:21:17,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:21:17,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:21:17,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:21:17,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:21:17,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:21:17,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:21:17,740 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:21:17,740 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:21:18,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:21:18,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:21:18,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:21:18,133 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:21:18,134 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:21:18,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex01-1.c [2021-02-22 02:21:18,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd541cf7/d824b0b47b0240aeb8da57d48fa697ff/FLAG2866f0be5 [2021-02-22 02:21:18,840 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:21:18,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01-1.c [2021-02-22 02:21:18,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd541cf7/d824b0b47b0240aeb8da57d48fa697ff/FLAG2866f0be5 [2021-02-22 02:21:19,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd541cf7/d824b0b47b0240aeb8da57d48fa697ff [2021-02-22 02:21:19,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:21:19,219 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:21:19,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:21:19,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:21:19,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:21:19,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:21:19" (1/1) ... [2021-02-22 02:21:19,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@311104ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:19, skipping insertion in model container [2021-02-22 02:21:19,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:21:19" (1/1) ... [2021-02-22 02:21:19,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:21:19,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:21:19,405 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01-1.c[320,333] [2021-02-22 02:21:19,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:21:19,433 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:21:19,447 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01-1.c[320,333] [2021-02-22 02:21:19,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:21:19,470 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:21:19,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:19 WrapperNode [2021-02-22 02:21:19,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:21:19,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:21:19,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:21:19,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:21:19,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:19" (1/1) ... [2021-02-22 02:21:19,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:19" (1/1) ... [2021-02-22 02:21:19,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:19" (1/1) ... [2021-02-22 02:21:19,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:19" (1/1) ... [2021-02-22 02:21:19,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:19" (1/1) ... [2021-02-22 02:21:19,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:19" (1/1) ... [2021-02-22 02:21:19,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:19" (1/1) ... [2021-02-22 02:21:19,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:21:19,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:21:19,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:21:19,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:21:19,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:19" (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 [2021-02-22 02:21:19,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:21:19,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:21:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:21:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:21:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-02-22 02:21:19,632 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:21:19,632 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:21:19,633 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:21:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:21:19,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:21:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:21:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-22 02:21:19,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:21:19,636 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-02-22 02:21:19,636 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:21:19,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:21:19,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:21:19,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:21:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:21:19,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:21:19,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:21:20,021 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:21:20,022 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-22 02:21:20,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:21:20 BoogieIcfgContainer [2021-02-22 02:21:20,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:21:20,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:21:20,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:21:20,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:21:20,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:21:19" (1/3) ... [2021-02-22 02:21:20,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61500101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:21:20, skipping insertion in model container [2021-02-22 02:21:20,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:19" (2/3) ... [2021-02-22 02:21:20,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61500101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:21:20, skipping insertion in model container [2021-02-22 02:21:20,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:21:20" (3/3) ... [2021-02-22 02:21:20,048 INFO L111 eAbstractionObserver]: Analyzing ICFG trex01-1.c [2021-02-22 02:21:20,067 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:21:20,094 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:21:20,122 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:21:20,148 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:21:20,149 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:21:20,149 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:21:20,149 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:21:20,149 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:21:20,149 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:21:20,149 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:21:20,150 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:21:20,168 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2021-02-22 02:21:20,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-22 02:21:20,180 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:20,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:21:20,181 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:20,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:20,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1953438842, now seen corresponding path program 1 times [2021-02-22 02:21:20,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:20,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497617665] [2021-02-22 02:21:20,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:20,313 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:21:20,495 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:21:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:21:20,583 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:21:20,641 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:21:20,642 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:21:20,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:21:20,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:21:20 BoogieIcfgContainer [2021-02-22 02:21:20,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:21:20,674 INFO L168 Benchmark]: Toolchain (without parser) took 1462.70 ms. Allocated memory is still 173.0 MB. Free memory was 149.5 MB in the beginning and 140.6 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:20,677 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 173.0 MB. Free memory is still 146.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:21:20,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.93 ms. Allocated memory is still 173.0 MB. Free memory was 148.4 MB in the beginning and 139.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:20,684 INFO L168 Benchmark]: Boogie Preprocessor took 42.23 ms. Allocated memory is still 173.0 MB. Free memory was 139.0 MB in the beginning and 137.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:20,686 INFO L168 Benchmark]: RCFGBuilder took 511.90 ms. Allocated memory is still 173.0 MB. Free memory was 137.3 MB in the beginning and 156.0 MB in the end (delta: -18.7 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:20,687 INFO L168 Benchmark]: TraceAbstraction took 639.13 ms. Allocated memory is still 173.0 MB. Free memory was 155.8 MB in the beginning and 140.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:20,697 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 173.0 MB. Free memory is still 146.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 250.93 ms. Allocated memory is still 173.0 MB. Free memory was 148.4 MB in the beginning and 139.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.23 ms. Allocated memory is still 173.0 MB. Free memory was 139.0 MB in the beginning and 137.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 511.90 ms. Allocated memory is still 173.0 MB. Free memory was 137.3 MB in the beginning and 156.0 MB in the end (delta: -18.7 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 639.13 ms. Allocated memory is still 173.0 MB. Free memory was 155.8 MB in the beginning and 140.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L36] _Bool c = __VERIFIER_nondet_bool(); [L37] COND FALSE !(\read(c)) [L40] CALL f(2) [L15] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L15] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L15] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L15] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L16] COND FALSE !(!(k <= 1073741823)) [L19] COND FALSE !(z < k) [L20] CALL __VERIFIER_assert(z>=2) [L6] COND TRUE !(cond) [L7] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, 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=55occurred 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...