/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/just_assert.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:33:50,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:33:50,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:33:50,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:33:50,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:33:50,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:33:50,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:33:50,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:33:50,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:33:50,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:33:50,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:33:50,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:33:50,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:33:50,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:33:50,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:33:50,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:33:50,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:33:50,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:33:50,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:33:50,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:33:50,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:33:50,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:33:50,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:33:50,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:33:50,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:33:50,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:33:50,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:33:50,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:33:50,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:33:50,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:33:50,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:33:50,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:33:50,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:33:50,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:33:50,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:33:50,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:33:50,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:33:50,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:33:50,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:33:50,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:33:50,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:33:50,143 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:33:50,155 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:33:50,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:33:50,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:33:50,158 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:33:50,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:33:50,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:33:50,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:33:50,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:33:50,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:33:50,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:33:50,160 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:33:50,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:33:50,160 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:33:50,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:33:50,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:33:50,161 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:33:50,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:33:50,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:33:50,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:33:50,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:33:50,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:33:50,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:33:50,163 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:33:50,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:33:50,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:33:50,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:33:50,577 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:33:50,577 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:33:50,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/just_assert.i [2020-10-23 20:33:50,678 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd267f682/91368556205c4ce59e373b4123dcbaf5/FLAG0076a3552 [2020-10-23 20:33:51,315 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:33:51,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/just_assert.i [2020-10-23 20:33:51,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd267f682/91368556205c4ce59e373b4123dcbaf5/FLAG0076a3552 [2020-10-23 20:33:51,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd267f682/91368556205c4ce59e373b4123dcbaf5 [2020-10-23 20:33:51,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:33:51,698 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:33:51,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:33:51,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:33:51,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:33:51,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:33:51" (1/1) ... [2020-10-23 20:33:51,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4294f154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:51, skipping insertion in model container [2020-10-23 20:33:51,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:33:51" (1/1) ... [2020-10-23 20:33:51,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:33:51,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:33:51,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:33:51,894 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:33:51,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:33:51,925 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:33:51,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:51 WrapperNode [2020-10-23 20:33:51,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:33:51,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:33:51,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:33:51,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:33:51,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:51" (1/1) ... [2020-10-23 20:33:51,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:51" (1/1) ... [2020-10-23 20:33:51,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:51" (1/1) ... [2020-10-23 20:33:51,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:51" (1/1) ... [2020-10-23 20:33:51,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:51" (1/1) ... [2020-10-23 20:33:51,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:51" (1/1) ... [2020-10-23 20:33:51,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:51" (1/1) ... [2020-10-23 20:33:51,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:33:51,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:33:51,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:33:51,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:33:51,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:51" (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 [2020-10-23 20:33:52,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:33:52,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:33:52,049 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:33:52,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:33:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:33:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:33:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:33:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:33:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:33:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:33:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:33:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:33:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:33:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:33:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:33:52,459 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:33:52,460 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 20:33:52,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:33:52 BoogieIcfgContainer [2020-10-23 20:33:52,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:33:52,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:33:52,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:33:52,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:33:52,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:33:51" (1/3) ... [2020-10-23 20:33:52,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5017d7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:33:52, skipping insertion in model container [2020-10-23 20:33:52,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:51" (2/3) ... [2020-10-23 20:33:52,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5017d7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:33:52, skipping insertion in model container [2020-10-23 20:33:52,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:33:52" (3/3) ... [2020-10-23 20:33:52,474 INFO L111 eAbstractionObserver]: Analyzing ICFG just_assert.i [2020-10-23 20:33:52,487 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:33:52,491 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:33:52,502 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:33:52,523 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:33:52,523 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:33:52,523 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:33:52,523 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:33:52,523 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:33:52,523 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:33:52,524 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:33:52,524 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:33:52,547 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-23 20:33:52,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-23 20:33:52,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:52,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:33:52,556 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:52,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:52,564 INFO L82 PathProgramCache]: Analyzing trace with hash 565298756, now seen corresponding path program 1 times [2020-10-23 20:33:52,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:52,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864233407] [2020-10-23 20:33:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:52,657 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:52,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:33:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:52,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:33:52,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864233407] [2020-10-23 20:33:52,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:33:52,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 20:33:52,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867094600] [2020-10-23 20:33:53,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 20:33:53,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:33:53,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 20:33:53,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:33:53,032 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-10-23 20:33:53,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:33:53,121 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2020-10-23 20:33:53,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 20:33:53,125 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-23 20:33:53,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:33:53,135 INFO L225 Difference]: With dead ends: 29 [2020-10-23 20:33:53,135 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 20:33:53,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:33:53,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 20:33:53,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 20:33:53,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 20:33:53,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 20:33:53,191 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-23 20:33:53,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:33:53,191 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 20:33:53,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 20:33:53,192 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 20:33:53,192 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 20:33:53,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:33:53,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 20:33:53,402 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-23 20:33:53,403 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 20:33:53,403 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-23 20:33:53,403 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-23 20:33:53,403 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-23 20:33:53,404 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-23 20:33:53,404 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:33:53,404 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-23 20:33:53,404 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 20:33:53,404 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-10-23 20:33:53,405 INFO L270 CegarLoopResult]: 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|)) [2020-10-23 20:33:53,405 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-23 20:33:53,407 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-23 20:33:53,407 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 20:33:53,407 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-23 20:33:53,407 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:33:53,408 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 20:33:53,408 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-23 20:33:53,408 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 7 13) the Hoare annotation is: true [2020-10-23 20:33:53,408 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 7 13) the Hoare annotation is: true [2020-10-23 20:33:53,409 INFO L270 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: false [2020-10-23 20:33:53,409 INFO L270 CegarLoopResult]: At program point L10-1(line 10) the Hoare annotation is: false [2020-10-23 20:33:53,409 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 7 13) the Hoare annotation is: true [2020-10-23 20:33:53,409 INFO L277 CegarLoopResult]: At program point L9-1(lines 9 11) the Hoare annotation is: true [2020-10-23 20:33:53,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:33:53 BoogieIcfgContainer [2020-10-23 20:33:53,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:33:53,429 INFO L168 Benchmark]: Toolchain (without parser) took 1733.74 ms. Allocated memory is still 151.0 MB. Free memory was 128.2 MB in the beginning and 100.6 MB in the end (delta: 27.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:53,432 INFO L168 Benchmark]: CDTParser took 1.01 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 125.5 MB in the end (delta: 117.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:33:53,435 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.78 ms. Allocated memory is still 151.0 MB. Free memory was 127.6 MB in the beginning and 118.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:53,437 INFO L168 Benchmark]: Boogie Preprocessor took 32.66 ms. Allocated memory is still 151.0 MB. Free memory was 118.8 MB in the beginning and 117.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:53,438 INFO L168 Benchmark]: RCFGBuilder took 500.72 ms. Allocated memory is still 151.0 MB. Free memory was 117.4 MB in the beginning and 106.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:53,440 INFO L168 Benchmark]: TraceAbstraction took 961.53 ms. Allocated memory is still 151.0 MB. Free memory was 105.8 MB in the beginning and 100.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:53,450 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.01 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 125.5 MB in the end (delta: 117.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 224.78 ms. Allocated memory is still 151.0 MB. Free memory was 127.6 MB in the beginning and 118.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.66 ms. Allocated memory is still 151.0 MB. Free memory was 118.8 MB in the beginning and 117.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 500.72 ms. Allocated memory is still 151.0 MB. Free memory was 117.4 MB in the beginning and 106.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 961.53 ms. Allocated memory is still 151.0 MB. Free memory was 105.8 MB in the beginning and 100.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 7]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 3 SDslu, 4 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 24 LocationsWithAnnotation, 24 PreInvPairs, 29 NumberOfFragments, 54 HoareAnnotationTreeSize, 24 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 24 FomulaSimplificationsInter, 120 FormulaSimplificationTreeSizeReductionInter, 0.0s 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...