/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/bitvector-regression/signextension-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:11:17,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:11:17,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:11:17,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 20:11:17,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:11:17,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:11:17,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:11:17,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:11:17,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:11:17,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:11:17,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:11:17,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:11:17,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:11:17,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:11:17,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:11:17,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:11:17,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:11:17,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:11:17,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:11:17,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:11:17,885 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:11:17,912 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:11:17,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:11:17,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:11:17,918 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:11:17,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:11:17,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:11:17,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:11:17,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:11:17,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:11:17,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:11:17,920 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:11:17,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:11:17,920 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:11:17,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:11:17,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:11:17,921 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:11:17,922 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:11:17,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:11:17,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:11:17,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:11:17,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:11:17,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:11:17,923 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:11:18,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:11:18,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:11:18,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:11:18,386 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:11:18,387 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:11:18,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-regression/signextension-2.c [2021-02-21 20:11:18,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89f43b246/af02878e7afd4d689ca9b13c32f11873/FLAGb51c4d12d [2021-02-21 20:11:19,102 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:11:19,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-regression/signextension-2.c [2021-02-21 20:11:19,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89f43b246/af02878e7afd4d689ca9b13c32f11873/FLAGb51c4d12d [2021-02-21 20:11:19,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89f43b246/af02878e7afd4d689ca9b13c32f11873 [2021-02-21 20:11:19,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:11:19,492 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:11:19,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:11:19,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:11:19,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:11:19,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:11:19" (1/1) ... [2021-02-21 20:11:19,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ed86a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:19, skipping insertion in model container [2021-02-21 20:11:19,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:11:19" (1/1) ... [2021-02-21 20:11:19,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:11:19,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:11:19,707 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector-regression/signextension-2.c[922,935] [2021-02-21 20:11:19,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:11:19,725 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:11:19,744 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector-regression/signextension-2.c[922,935] [2021-02-21 20:11:19,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:11:19,761 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:11:19,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:19 WrapperNode [2021-02-21 20:11:19,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:11:19,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:11:19,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:11:19,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:11:19,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:19" (1/1) ... [2021-02-21 20:11:19,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:19" (1/1) ... [2021-02-21 20:11:19,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:19" (1/1) ... [2021-02-21 20:11:19,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:19" (1/1) ... [2021-02-21 20:11:19,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:19" (1/1) ... [2021-02-21 20:11:19,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:19" (1/1) ... [2021-02-21 20:11:19,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:19" (1/1) ... [2021-02-21 20:11:19,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:11:19,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:11:19,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:11:19,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:11:19,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:19" (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 [2021-02-21 20:11:19,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:11:19,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:11:19,917 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:11:19,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:11:19,918 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:11:19,918 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:11:19,918 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:11:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:11:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:11:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:11:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:11:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:11:19,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:11:19,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:11:19,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:11:20,319 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:11:20,319 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 20:11:20,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:11:20 BoogieIcfgContainer [2021-02-21 20:11:20,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:11:20,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:11:20,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:11:20,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:11:20,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:11:19" (1/3) ... [2021-02-21 20:11:20,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42fa90df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:11:20, skipping insertion in model container [2021-02-21 20:11:20,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:19" (2/3) ... [2021-02-21 20:11:20,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42fa90df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:11:20, skipping insertion in model container [2021-02-21 20:11:20,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:11:20" (3/3) ... [2021-02-21 20:11:20,332 INFO L111 eAbstractionObserver]: Analyzing ICFG signextension-2.c [2021-02-21 20:11:20,340 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:11:20,345 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:11:20,367 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:11:20,395 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:11:20,395 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:11:20,417 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:11:20,417 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:11:20,417 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:11:20,417 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:11:20,417 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:11:20,418 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:11:20,471 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2021-02-21 20:11:20,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-21 20:11:20,491 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:11:20,492 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] [2021-02-21 20:11:20,496 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:11:20,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:11:20,503 INFO L82 PathProgramCache]: Analyzing trace with hash 155981136, now seen corresponding path program 1 times [2021-02-21 20:11:20,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:11:20,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39665472] [2021-02-21 20:11:20,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:11:20,601 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:11:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:21,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:21,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:21,048 WARN L141 QuantifierPusher]: treesize reduction 191, result has 12.4 percent of original size [2021-02-21 20:11:21,050 WARN L147 QuantifierPusher]: treesize reduction 191, result has 12.4 percent of original size 27 [2021-02-21 20:11:21,148 WARN L141 QuantifierPusher]: treesize reduction 309, result has 32.4 percent of original size [2021-02-21 20:11:21,155 WARN L147 QuantifierPusher]: treesize reduction 309, result has 32.4 percent of original size 148 [2021-02-21 20:11:21,272 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 13 [2021-02-21 20:11:21,298 WARN L141 QuantifierPusher]: treesize reduction 314, result has 34.4 percent of original size [2021-02-21 20:11:21,307 WARN L147 QuantifierPusher]: treesize reduction 314, result has 34.4 percent of original size 165 [2021-02-21 20:11:21,416 WARN L141 QuantifierPusher]: treesize reduction 20, result has 80.8 percent of original size [2021-02-21 20:11:21,421 WARN L147 QuantifierPusher]: treesize reduction 20, result has 80.8 percent of original size 84 [2021-02-21 20:11:21,492 WARN L141 QuantifierPusher]: treesize reduction 20, result has 80.8 percent of original size [2021-02-21 20:11:21,496 WARN L147 QuantifierPusher]: treesize reduction 20, result has 80.8 percent of original size 84 [2021-02-21 20:11:21,595 WARN L141 QuantifierPusher]: treesize reduction 22, result has 83.5 percent of original size [2021-02-21 20:11:21,600 WARN L147 QuantifierPusher]: treesize reduction 22, result has 83.5 percent of original size 111 [2021-02-21 20:11:21,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:21,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:21,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:11:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:21,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:21,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:11:21,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39665472] [2021-02-21 20:11:21,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:11:21,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 20:11:21,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597724323] [2021-02-21 20:11:21,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 20:11:21,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:11:21,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 20:11:21,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-21 20:11:21,808 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 9 states. [2021-02-21 20:11:22,256 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2021-02-21 20:11:22,410 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2021-02-21 20:11:22,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:11:22,441 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2021-02-21 20:11:22,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 20:11:22,443 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2021-02-21 20:11:22,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:11:22,450 INFO L225 Difference]: With dead ends: 32 [2021-02-21 20:11:22,450 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 20:11:22,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-02-21 20:11:22,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 20:11:22,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 20:11:22,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 20:11:22,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 20:11:22,482 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-02-21 20:11:22,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:11:22,483 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 20:11:22,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 20:11:22,483 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 20:11:22,483 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 20:11:22,484 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:11:22,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 20:11:23,116 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 20:11:23,117 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 20:11:23,117 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 20:11:23,117 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-21 20:11:23,117 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-21 20:11:23,118 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 20:11:23,118 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-21 20:11:23,118 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 20:11:23,118 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-21 20:11:23,119 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-21 20:11:23,119 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-21 20:11:23,119 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-21 20:11:23,119 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 20:11:23,119 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 20:11:23,119 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 20:11:23,120 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 20:11:23,120 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 20:11:23,120 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) the Hoare annotation is: false [2021-02-21 20:11:23,120 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 5 29) the Hoare annotation is: true [2021-02-21 20:11:23,120 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: false [2021-02-21 20:11:23,121 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: false [2021-02-21 20:11:23,121 INFO L185 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~unsignedtounsigned~0 4294967296))) (.cse2 (div main_~signedtounsigned~0 4294967296)) (.cse1 (div main_~allbits~0 65536))) (and (<= main_~unsignedtosigned~0 65535) (< (+ .cse0 65534) main_~unsignedtounsigned~0) (<= (+ .cse1 1) 0) (<= main_~unsignedtounsigned~0 (+ .cse0 65535)) (= (+ main_~signedallbits~0 1) 0) (= (+ main_~signedtosigned~0 1) 0) (<= (+ .cse2 1) 0) (<= main_~unsignedtounsigned~0 65535) (< (+ (* 4294967296 .cse2) 4294967294) main_~signedtounsigned~0) (<= 0 (+ main_~allbits~0 1)) (<= 0 (+ main_~unsignedtosigned~0 (* 65536 .cse1) 1)))) [2021-02-21 20:11:23,121 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 5 29) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~unsignedtounsigned~0 4294967296))) (.cse2 (div main_~signedtounsigned~0 4294967296)) (.cse1 (div main_~allbits~0 65536))) (and (<= main_~unsignedtosigned~0 65535) (< (+ .cse0 65534) main_~unsignedtounsigned~0) (<= (+ .cse1 1) 0) (<= main_~unsignedtounsigned~0 (+ .cse0 65535)) (= (+ main_~signedallbits~0 1) 0) (= (+ main_~signedtosigned~0 1) 0) (<= (+ .cse2 1) 0) (<= main_~unsignedtounsigned~0 65535) (< (+ (* 4294967296 .cse2) 4294967294) main_~signedtounsigned~0) (<= 0 (+ main_~allbits~0 1)) (<= 0 (+ main_~unsignedtosigned~0 (* 65536 .cse1) 1)))) [2021-02-21 20:11:23,122 INFO L185 CegarLoopUtils]: At program point L23(lines 5 29) the Hoare annotation is: false [2021-02-21 20:11:23,122 INFO L185 CegarLoopUtils]: At program point L21(lines 21 24) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~unsignedtounsigned~0 4294967296))) (.cse2 (div main_~signedtounsigned~0 4294967296)) (.cse1 (div main_~allbits~0 65536))) (and (<= main_~unsignedtosigned~0 65535) (< (+ .cse0 65534) main_~unsignedtounsigned~0) (<= (+ .cse1 1) 0) (<= main_~unsignedtounsigned~0 (+ .cse0 65535)) (= (+ main_~signedallbits~0 1) 0) (= (+ main_~signedtosigned~0 1) 0) (<= (+ .cse2 1) 0) (<= main_~unsignedtounsigned~0 65535) (< (+ (* 4294967296 .cse2) 4294967294) main_~signedtounsigned~0) (<= 0 (+ main_~allbits~0 1)) (<= 0 (+ main_~unsignedtosigned~0 (* 65536 .cse1) 1)))) [2021-02-21 20:11:23,122 INFO L185 CegarLoopUtils]: At program point mainFINAL(lines 5 29) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~unsignedtounsigned~0 4294967296))) (.cse2 (div main_~signedtounsigned~0 4294967296)) (.cse1 (div main_~allbits~0 65536))) (and (<= main_~unsignedtosigned~0 65535) (< (+ .cse0 65534) main_~unsignedtounsigned~0) (<= (+ .cse1 1) 0) (<= main_~unsignedtounsigned~0 (+ .cse0 65535)) (= (+ main_~signedallbits~0 1) 0) (= (+ main_~signedtosigned~0 1) 0) (<= (+ .cse2 1) 0) (<= main_~unsignedtounsigned~0 65535) (< (+ (* 4294967296 .cse2) 4294967294) main_~signedtounsigned~0) (<= 0 (+ main_~allbits~0 1)) (<= 0 (+ main_~unsignedtosigned~0 (* 65536 .cse1) 1)))) [2021-02-21 20:11:23,123 INFO L185 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~unsignedtounsigned~0 4294967296))) (.cse1 (div main_~allbits~0 65536))) (and (<= main_~unsignedtosigned~0 65535) (< (+ .cse0 65534) main_~unsignedtounsigned~0) (<= (+ .cse1 1) 0) (<= main_~unsignedtounsigned~0 (+ .cse0 65535)) (= (+ main_~signedallbits~0 1) 0) (= (+ main_~signedtosigned~0 1) 0) (<= main_~unsignedtounsigned~0 65535) (<= 0 (+ main_~allbits~0 1)) (<= 0 (+ main_~unsignedtosigned~0 (* 65536 .cse1) 1)))) [2021-02-21 20:11:23,123 INFO L185 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~unsignedtounsigned~0 4294967296))) (.cse1 (div main_~allbits~0 65536))) (and (<= main_~unsignedtosigned~0 65535) (< (+ .cse0 65534) main_~unsignedtounsigned~0) (<= (+ .cse1 1) 0) (<= main_~unsignedtounsigned~0 (+ .cse0 65535)) (= (+ main_~signedallbits~0 1) 0) (<= main_~unsignedtounsigned~0 65535) (<= 0 (+ main_~allbits~0 1)) (<= 0 (+ main_~unsignedtosigned~0 (* 65536 .cse1) 1)))) [2021-02-21 20:11:23,123 INFO L185 CegarLoopUtils]: At program point L10(line 10) the Hoare annotation is: (let ((.cse0 (div main_~allbits~0 65536))) (and (<= main_~unsignedtosigned~0 65535) (<= (+ .cse0 1) 0) (= (+ main_~signedallbits~0 1) 0) (<= 0 (+ main_~allbits~0 1)) (<= 0 (+ main_~unsignedtosigned~0 (* 65536 .cse0) 1)))) [2021-02-21 20:11:23,123 INFO L185 CegarLoopUtils]: At program point L9(line 9) the Hoare annotation is: (and (<= (+ (div main_~allbits~0 65536) 1) 0) (= (+ main_~signedallbits~0 1) 0) (<= 0 (+ main_~allbits~0 1))) [2021-02-21 20:11:23,124 INFO L185 CegarLoopUtils]: At program point L8(line 8) the Hoare annotation is: (let ((.cse0 (+ main_~allbits~0 1))) (and (<= .cse0 0) (<= 0 .cse0))) [2021-02-21 20:11:23,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:11:23 BoogieIcfgContainer [2021-02-21 20:11:23,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:11:23,147 INFO L168 Benchmark]: Toolchain (without parser) took 3665.78 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 130.9 MB in the beginning and 63.3 MB in the end (delta: 67.6 MB). Peak memory consumption was 99.8 MB. Max. memory is 8.0 GB. [2021-02-21 20:11:23,148 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 155.2 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:11:23,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.10 ms. Allocated memory is still 155.2 MB. Free memory was 129.8 MB in the beginning and 120.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 20:11:23,150 INFO L168 Benchmark]: Boogie Preprocessor took 35.39 ms. Allocated memory is still 155.2 MB. Free memory was 120.1 MB in the beginning and 118.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:11:23,151 INFO L168 Benchmark]: RCFGBuilder took 521.91 ms. Allocated memory is still 155.2 MB. Free memory was 118.7 MB in the beginning and 105.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:11:23,160 INFO L168 Benchmark]: TraceAbstraction took 2821.49 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 105.5 MB in the beginning and 63.3 MB in the end (delta: 42.2 MB). Peak memory consumption was 74.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:11:23,163 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 155.2 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 266.10 ms. Allocated memory is still 155.2 MB. Free memory was 129.8 MB in the beginning and 120.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.39 ms. Allocated memory is still 155.2 MB. Free memory was 120.1 MB in the beginning and 118.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 521.91 ms. Allocated memory is still 155.2 MB. Free memory was 118.7 MB in the beginning and 105.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2821.49 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 105.5 MB in the beginning and 63.3 MB in the end (delta: 42.2 MB). Peak memory consumption was 74.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 5]: Procedure Contract for main Derived contract for procedure main: (((((((((unsignedtosigned <= 65535 && 4294967296 * (unsignedtounsigned / 4294967296) + 65534 < unsignedtounsigned) && allbits / 65536 + 1 <= 0) && unsignedtounsigned <= 4294967296 * (unsignedtounsigned / 4294967296) + 65535) && signedallbits + 1 == 0) && signedtosigned + 1 == 0) && signedtounsigned / 4294967296 + 1 <= 0) && unsignedtounsigned <= 65535) && 4294967296 * (signedtounsigned / 4294967296) + 4294967294 < signedtounsigned) && 0 <= allbits + 1) && 0 <= unsignedtosigned + 65536 * (allbits / 65536) + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 42 SDslu, 46 SDs, 0 SdLazy, 25 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 28 LocationsWithAnnotation, 28 PreInvPairs, 32 NumberOfFragments, 510 HoareAnnotationTreeSize, 28 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 28 FomulaSimplificationsInter, 300 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, 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 correct! Received shutdown request...