/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:46:26,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:46:26,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:46:26,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:46:26,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:46:26,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:46:26,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:46:26,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:46:26,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:46:26,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:46:26,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:46:26,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:46:26,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:46:26,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:46:26,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:46:26,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:46:26,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:46:26,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:46:26,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:46:26,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:46:26,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:46:26,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:46:26,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:46:26,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:46:26,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 17:46:26,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 17:46:26,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 17:46:26,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 17:46:26,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 17:46:26,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 17:46:26,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 17:46:26,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 17:46:26,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 17:46:26,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 17:46:26,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 17:46:26,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 17:46:26,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 17:46:26,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 17:46:26,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:46:26,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:46:26,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:46:26,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 17:46:27,001 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:46:27,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:46:27,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:46:27,004 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:46:27,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:46:27,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:46:27,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:46:27,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:46:27,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:46:27,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:46:27,007 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:46:27,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:46:27,007 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:46:27,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:46:27,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:46:27,008 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:46:27,008 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:46:27,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:46:27,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:46:27,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:46:27,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:46:27,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:46:27,009 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:46:27,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:46:27,475 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:46:27,481 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:46:27,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:46:27,484 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:46:27,486 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_2-2.c [2020-09-04 17:46:27,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97c67bd7e/41181a089a004a45a989da9274007e85/FLAG39ebd04c9 [2020-09-04 17:46:28,129 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:46:28,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/simple_2-2.c [2020-09-04 17:46:28,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97c67bd7e/41181a089a004a45a989da9274007e85/FLAG39ebd04c9 [2020-09-04 17:46:28,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97c67bd7e/41181a089a004a45a989da9274007e85 [2020-09-04 17:46:28,480 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:46:28,482 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:46:28,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:46:28,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:46:28,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:46:28,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:46:28" (1/1) ... [2020-09-04 17:46:28,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c77fbdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:28, skipping insertion in model container [2020-09-04 17:46:28,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:46:28" (1/1) ... [2020-09-04 17:46:28,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:46:28,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:46:28,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:46:28,745 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:46:28,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:46:28,776 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:46:28,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:28 WrapperNode [2020-09-04 17:46:28,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:46:28,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:46:28,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:46:28,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:46:28,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:28" (1/1) ... [2020-09-04 17:46:28,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:28" (1/1) ... [2020-09-04 17:46:28,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:28" (1/1) ... [2020-09-04 17:46:28,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:28" (1/1) ... [2020-09-04 17:46:28,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:28" (1/1) ... [2020-09-04 17:46:28,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:28" (1/1) ... [2020-09-04 17:46:28,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:28" (1/1) ... [2020-09-04 17:46:28,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:46:28,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:46:28,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:46:28,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:46:28,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 17:46:28,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:46:28,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:46:28,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:46:28,973 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:46:28,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:46:28,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-04 17:46:28,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:46:28,974 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:46:28,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:46:28,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:46:29,163 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:46:29,163 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 17:46:29,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:46:29 BoogieIcfgContainer [2020-09-04 17:46:29,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:46:29,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:46:29,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:46:29,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:46:29,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:46:28" (1/3) ... [2020-09-04 17:46:29,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f07bba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:46:29, skipping insertion in model container [2020-09-04 17:46:29,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:28" (2/3) ... [2020-09-04 17:46:29,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f07bba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:46:29, skipping insertion in model container [2020-09-04 17:46:29,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:46:29" (3/3) ... [2020-09-04 17:46:29,178 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_2-2.c [2020-09-04 17:46:29,188 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:46:29,199 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:46:29,222 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:46:29,252 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:46:29,252 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:46:29,252 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:46:29,252 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:46:29,253 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:46:29,253 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:46:29,253 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:46:29,253 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:46:29,270 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-09-04 17:46:29,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-04 17:46:29,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:46:29,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:46:29,283 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:46:29,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:46:29,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1940560411, now seen corresponding path program 1 times [2020-09-04 17:46:29,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:46:29,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513527970] [2020-09-04 17:46:29,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:46:29,370 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:46:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:46:29,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:46:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:46:29,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:46:29,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513527970] [2020-09-04 17:46:29,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:46:29,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-04 17:46:29,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297065475] [2020-09-04 17:46:29,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-04 17:46:29,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:46:29,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-04 17:46:29,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 17:46:29,469 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-09-04 17:46:29,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:46:29,501 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-09-04 17:46:29,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-04 17:46:29,503 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-09-04 17:46:29,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:46:29,514 INFO L225 Difference]: With dead ends: 32 [2020-09-04 17:46:29,515 INFO L226 Difference]: Without dead ends: 15 [2020-09-04 17:46:29,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 17:46:29,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-09-04 17:46:29,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-09-04 17:46:29,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-09-04 17:46:29,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-09-04 17:46:29,569 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2020-09-04 17:46:29,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:46:29,570 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-09-04 17:46:29,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-04 17:46:29,570 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-09-04 17:46:29,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-04 17:46:29,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:46:29,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:46:29,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:46:29,572 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:46:29,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:46:29,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1947025058, now seen corresponding path program 1 times [2020-09-04 17:46:29,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:46:29,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982241918] [2020-09-04 17:46:29,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:46:29,575 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:46:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:46:29,605 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:46:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:46:29,616 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:46:29,634 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 17:46:29,634 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:46:29,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:46:29,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:46:29 BoogieIcfgContainer [2020-09-04 17:46:29,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:46:29,655 INFO L168 Benchmark]: Toolchain (without parser) took 1171.85 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 103.4 MB in the beginning and 149.2 MB in the end (delta: -45.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:46:29,657 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 146.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 17:46:29,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.07 ms. Allocated memory is still 146.8 MB. Free memory was 103.2 MB in the beginning and 93.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:46:29,659 INFO L168 Benchmark]: Boogie Preprocessor took 120.41 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 93.9 MB in the beginning and 184.0 MB in the end (delta: -90.1 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-09-04 17:46:29,660 INFO L168 Benchmark]: RCFGBuilder took 269.20 ms. Allocated memory is still 203.9 MB. Free memory was 184.0 MB in the beginning and 172.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-09-04 17:46:29,661 INFO L168 Benchmark]: TraceAbstraction took 483.17 ms. Allocated memory is still 203.9 MB. Free memory was 171.5 MB in the beginning and 149.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:46:29,665 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 146.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 293.07 ms. Allocated memory is still 146.8 MB. Free memory was 103.2 MB in the beginning and 93.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.41 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 93.9 MB in the beginning and 184.0 MB in the end (delta: -90.1 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 269.20 ms. Allocated memory is still 203.9 MB. Free memory was 184.0 MB in the beginning and 172.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 483.17 ms. Allocated memory is still 203.9 MB. Free memory was 171.5 MB in the beginning and 149.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] unsigned int x = __VERIFIER_nondet_uint(); [L14] COND FALSE !(x < 0x0fffffff) [L18] CALL __VERIFIER_assert(x > 0x0fffffff) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...