/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/loop-acceleration/simple_3-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 02:00:08,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:00:08,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:00:08,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 02:00:08,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 02:00:08,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 02:00:08,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 02:00:08,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 02:00:09,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 02:00:09,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 02:00:09,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 02:00:09,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 02:00:09,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 02:00:09,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 02:00:09,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 02:00:09,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 02:00:09,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 02:00:09,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 02:00:09,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 02:00:09,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 02:00:09,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 02:00:09,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 02:00:09,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 02:00:09,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 02:00:09,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 02:00:09,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 02:00:09,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 02:00:09,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 02:00:09,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 02:00:09,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 02:00:09,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 02:00:09,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 02:00:09,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 02:00:09,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 02:00:09,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 02:00:09,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 02:00:09,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 02:00:09,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 02:00:09,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:00:09,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:00:09,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:00:09,065 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 02:00:09,077 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:00:09,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:00:09,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:00:09,080 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 02:00:09,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:00:09,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 02:00:09,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:00:09,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:00:09,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:00:09,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:00:09,083 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 02:00:09,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:00:09,084 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:00:09,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:00:09,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:00:09,086 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:00:09,086 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:00:09,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:00:09,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:00:09,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:00:09,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:00:09,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:00:09,088 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:00:09,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:00:09,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:00:09,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:00:09,571 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:00:09,571 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:00:09,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_3-2.c [2020-11-07 02:00:09,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0810eeb3c/81f33cc79d6a409787725e18a204cfec/FLAG5f2cb2678 [2020-11-07 02:00:10,265 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:00:10,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_3-2.c [2020-11-07 02:00:10,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0810eeb3c/81f33cc79d6a409787725e18a204cfec/FLAG5f2cb2678 [2020-11-07 02:00:10,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0810eeb3c/81f33cc79d6a409787725e18a204cfec [2020-11-07 02:00:10,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:00:10,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:00:10,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:00:10,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:00:10,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:00:10,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:00:10" (1/1) ... [2020-11-07 02:00:10,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33589be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:10, skipping insertion in model container [2020-11-07 02:00:10,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:00:10" (1/1) ... [2020-11-07 02:00:10,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:00:10,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:00:10,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:00:10,868 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:00:10,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:00:10,900 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:00:10,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:10 WrapperNode [2020-11-07 02:00:10,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:00:10,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:00:10,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:00:10,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:00:10,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:10" (1/1) ... [2020-11-07 02:00:10,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:10" (1/1) ... [2020-11-07 02:00:10,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:10" (1/1) ... [2020-11-07 02:00:10,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:10" (1/1) ... [2020-11-07 02:00:10,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:10" (1/1) ... [2020-11-07 02:00:10,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:10" (1/1) ... [2020-11-07 02:00:10,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:10" (1/1) ... [2020-11-07 02:00:10,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:00:10,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:00:10,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:00:10,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:00:10,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:00:11,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:00:11,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:00:11,025 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:00:11,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 02:00:11,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:00:11,025 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:00:11,025 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:00:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:00:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:00:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2020-11-07 02:00:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 02:00:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:00:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:00:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:00:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:00:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:00:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:00:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:00:11,439 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:00:11,440 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 02:00:11,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:00:11 BoogieIcfgContainer [2020-11-07 02:00:11,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:00:11,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:00:11,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:00:11,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:00:11,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:00:10" (1/3) ... [2020-11-07 02:00:11,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521c477f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:00:11, skipping insertion in model container [2020-11-07 02:00:11,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:10" (2/3) ... [2020-11-07 02:00:11,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521c477f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:00:11, skipping insertion in model container [2020-11-07 02:00:11,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:00:11" (3/3) ... [2020-11-07 02:00:11,450 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_3-2.c [2020-11-07 02:00:11,466 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:00:11,469 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:00:11,481 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:00:11,537 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:00:11,538 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:00:11,538 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:00:11,542 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:00:11,543 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:00:11,543 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:00:11,543 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:00:11,543 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:00:11,564 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-11-07 02:00:11,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-07 02:00:11,578 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:00:11,579 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] [2020-11-07 02:00:11,579 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:00:11,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:00:11,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1197886019, now seen corresponding path program 1 times [2020-11-07 02:00:11,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:00:11,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829842049] [2020-11-07 02:00:11,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:00:11,701 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:00:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:00:11,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:00:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:00:12,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:00:12,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829842049] [2020-11-07 02:00:12,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:00:12,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 02:00:12,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053723253] [2020-11-07 02:00:12,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 02:00:12,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:00:12,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 02:00:12,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 02:00:12,059 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-11-07 02:00:12,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:00:12,161 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-11-07 02:00:12,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 02:00:12,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-07 02:00:12,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:00:12,171 INFO L225 Difference]: With dead ends: 44 [2020-11-07 02:00:12,171 INFO L226 Difference]: Without dead ends: 23 [2020-11-07 02:00:12,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 02:00:12,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-07 02:00:12,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-07 02:00:12,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-07 02:00:12,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-11-07 02:00:12,218 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2020-11-07 02:00:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:00:12,219 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-11-07 02:00:12,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 02:00:12,219 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-11-07 02:00:12,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-07 02:00:12,220 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:00:12,220 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] [2020-11-07 02:00:12,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:00:12,221 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:00:12,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:00:12,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1054740264, now seen corresponding path program 1 times [2020-11-07 02:00:12,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:00:12,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81898591] [2020-11-07 02:00:12,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:00:12,226 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:00:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:00:12,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:00:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:00:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:00:12,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81898591] [2020-11-07 02:00:12,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:00:12,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 02:00:12,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808951741] [2020-11-07 02:00:12,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 02:00:12,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:00:12,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 02:00:12,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 02:00:12,375 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 6 states. [2020-11-07 02:00:12,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:00:12,624 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-11-07 02:00:12,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 02:00:12,625 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-07 02:00:12,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:00:12,626 INFO L225 Difference]: With dead ends: 31 [2020-11-07 02:00:12,626 INFO L226 Difference]: Without dead ends: 25 [2020-11-07 02:00:12,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-07 02:00:12,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-07 02:00:12,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-11-07 02:00:12,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-07 02:00:12,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-11-07 02:00:12,637 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2020-11-07 02:00:12,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:00:12,637 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-11-07 02:00:12,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 02:00:12,638 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-11-07 02:00:12,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-07 02:00:12,639 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:00:12,639 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] [2020-11-07 02:00:12,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 02:00:12,639 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:00:12,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:00:12,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1378332055, now seen corresponding path program 1 times [2020-11-07 02:00:12,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:00:12,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895246000] [2020-11-07 02:00:12,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:00:13,288 WARN L194 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2020-11-07 02:00:13,312 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:00:13,316 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:00:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:00:13,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:00:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:00:13,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:00:13,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895246000] [2020-11-07 02:00:13,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:00:13,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 02:00:13,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661450831] [2020-11-07 02:00:13,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 02:00:13,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:00:13,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 02:00:13,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-07 02:00:13,461 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 7 states. [2020-11-07 02:00:13,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:00:13,673 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-11-07 02:00:13,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 02:00:13,673 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-07 02:00:13,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:00:13,674 INFO L225 Difference]: With dead ends: 25 [2020-11-07 02:00:13,674 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 02:00:13,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-07 02:00:13,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 02:00:13,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 02:00:13,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 02:00:13,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 02:00:13,676 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-11-07 02:00:13,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:00:13,677 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 02:00:13,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 02:00:13,677 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 02:00:13,677 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 02:00:13,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 02:00:13,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 02:00:14,115 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 02:00:14,115 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 02:00:14,115 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 02:00:14,116 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 02:00:14,116 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 02:00:14,116 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 02:00:14,116 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 02:00:14,116 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 02:00:14,116 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 02:00:14,116 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-11-07 02:00:14,117 INFO L262 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|)) [2020-11-07 02:00:14,117 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 02:00:14,117 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 02:00:14,117 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 02:00:14,117 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 02:00:14,117 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 02:00:14,117 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 02:00:14,117 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 02:00:14,118 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 13 22) the Hoare annotation is: true [2020-11-07 02:00:14,118 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 13 22) the Hoare annotation is: true [2020-11-07 02:00:14,118 INFO L262 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (or (let ((.cse0 (div main_~x~0 2))) (and (< 0 .cse0) (<= main_~x~0 (* 2 .cse0)))) (= main_~x~0 0)) [2020-11-07 02:00:14,118 INFO L262 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (= main_~x~0 0) [2020-11-07 02:00:14,118 INFO L262 CegarLoopResult]: At program point L17-2(lines 17 19) the Hoare annotation is: (or (let ((.cse0 (div main_~x~0 2))) (and (< 0 .cse0) (<= main_~x~0 (* 2 .cse0)))) (= main_~x~0 0)) [2020-11-07 02:00:14,118 INFO L262 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: (= main_~x~0 0) [2020-11-07 02:00:14,119 INFO L262 CegarLoopResult]: At program point L17-3(lines 17 19) the Hoare annotation is: (or (let ((.cse0 (div main_~x~0 2))) (and (< 0 .cse0) (<= main_~x~0 (* 2 .cse0)))) (= main_~x~0 0)) [2020-11-07 02:00:14,119 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 13 22) the Hoare annotation is: true [2020-11-07 02:00:14,119 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-11-07 02:00:14,119 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: true [2020-11-07 02:00:14,119 INFO L262 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 02:00:14,120 INFO L262 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 02:00:14,120 INFO L262 CegarLoopResult]: At program point L8-1(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 02:00:14,120 INFO L269 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2020-11-07 02:00:14,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:00:14 BoogieIcfgContainer [2020-11-07 02:00:14,138 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 02:00:14,140 INFO L168 Benchmark]: Toolchain (without parser) took 3466.89 ms. Allocated memory is still 160.4 MB. Free memory was 137.0 MB in the beginning and 127.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 83.8 MB. Max. memory is 8.0 GB. [2020-11-07 02:00:14,141 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory was 102.5 MB in the beginning and 102.5 MB in the end (delta: 69.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 02:00:14,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.20 ms. Allocated memory is still 160.4 MB. Free memory was 136.4 MB in the beginning and 127.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-11-07 02:00:14,143 INFO L168 Benchmark]: Boogie Preprocessor took 34.33 ms. Allocated memory is still 160.4 MB. Free memory was 127.3 MB in the beginning and 125.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 02:00:14,144 INFO L168 Benchmark]: RCFGBuilder took 504.40 ms. Allocated memory is still 160.4 MB. Free memory was 125.9 MB in the beginning and 113.2 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-07 02:00:14,145 INFO L168 Benchmark]: TraceAbstraction took 2694.56 ms. Allocated memory is still 160.4 MB. Free memory was 112.7 MB in the beginning and 127.4 MB in the end (delta: -14.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 8.0 GB. [2020-11-07 02:00:14,149 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory was 102.5 MB in the beginning and 102.5 MB in the end (delta: 69.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 219.20 ms. Allocated memory is still 160.4 MB. Free memory was 136.4 MB in the beginning and 127.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.33 ms. Allocated memory is still 160.4 MB. Free memory was 127.3 MB in the beginning and 125.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 504.40 ms. Allocated memory is still 160.4 MB. Free memory was 125.9 MB in the beginning and 113.2 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2694.56 ms. Allocated memory is still 160.4 MB. Free memory was 112.7 MB in the beginning and 127.4 MB in the end (delta: -14.7 MB). Peak memory consumption was 59.7 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 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (0 < x / 2 && x <= 2 * (x / 2)) || x == 0 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 35 SDslu, 102 SDs, 0 SdLazy, 84 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 32 LocationsWithAnnotation, 52 PreInvPairs, 64 NumberOfFragments, 125 HoareAnnotationTreeSize, 52 FomulaSimplifications, 132 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 32 FomulaSimplificationsInter, 476 FormulaSimplificationTreeSizeReductionInter, 0.3s 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...