/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 11:36:19,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 11:36:19,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 11:36:19,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 11:36:19,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 11:36:19,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 11:36:19,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 11:36:19,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 11:36:19,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 11:36:19,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 11:36:19,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 11:36:19,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 11:36:19,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 11:36:19,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 11:36:19,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 11:36:19,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 11:36:19,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 11:36:19,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 11:36:19,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 11:36:19,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 11:36:19,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 11:36:19,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 11:36:19,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 11:36:19,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 11:36:19,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-06 11:36:19,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-06 11:36:19,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-06 11:36:19,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-06 11:36:19,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-06 11:36:19,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-06 11:36:19,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-06 11:36:19,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-06 11:36:19,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-06 11:36:19,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-06 11:36:19,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-06 11:36:19,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-06 11:36:19,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-06 11:36:19,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-06 11:36:19,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 11:36:19,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 11:36:19,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 11:36:19,085 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-06 11:36:19,100 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 11:36:19,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 11:36:19,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 11:36:19,104 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 11:36:19,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 11:36:19,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 11:36:19,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 11:36:19,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 11:36:19,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 11:36:19,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 11:36:19,105 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 11:36:19,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 11:36:19,105 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 11:36:19,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 11:36:19,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 11:36:19,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 11:36:19,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 11:36:19,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 11:36:19,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:36:19,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 11:36:19,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 11:36:19,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 11:36:19,107 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 11:36:19,107 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 11:36:19,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 11:36:19,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 11:36:19,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 11:36:19,442 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 11:36:19,443 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 11:36:19,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-05-06 11:36:19,518 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/653f7097d/7750addbdfe7454f9c4151aa2af5ce58/FLAGcac4d1a29 [2021-05-06 11:36:19,910 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 11:36:19,910 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-05-06 11:36:19,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/653f7097d/7750addbdfe7454f9c4151aa2af5ce58/FLAGcac4d1a29 [2021-05-06 11:36:20,325 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/653f7097d/7750addbdfe7454f9c4151aa2af5ce58 [2021-05-06 11:36:20,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 11:36:20,328 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 11:36:20,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 11:36:20,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 11:36:20,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 11:36:20,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:36:20" (1/1) ... [2021-05-06 11:36:20,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1937f9f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:20, skipping insertion in model container [2021-05-06 11:36:20,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:36:20" (1/1) ... [2021-05-06 11:36:20,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 11:36:20,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 11:36:20,449 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-05-06 11:36:20,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:36:20,457 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 11:36:20,484 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-05-06 11:36:20,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:36:20,503 INFO L208 MainTranslator]: Completed translation [2021-05-06 11:36:20,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:20 WrapperNode [2021-05-06 11:36:20,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 11:36:20,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 11:36:20,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 11:36:20,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 11:36:20,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:20" (1/1) ... [2021-05-06 11:36:20,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:20" (1/1) ... [2021-05-06 11:36:20,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:20" (1/1) ... [2021-05-06 11:36:20,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:20" (1/1) ... [2021-05-06 11:36:20,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:20" (1/1) ... [2021-05-06 11:36:20,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:20" (1/1) ... [2021-05-06 11:36:20,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:20" (1/1) ... [2021-05-06 11:36:20,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 11:36:20,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 11:36:20,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 11:36:20,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 11:36:20,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:36:20,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 11:36:20,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 11:36:20,628 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 11:36:20,628 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 11:36:20,628 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 11:36:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 11:36:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 11:36:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 11:36:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 11:36:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 11:36:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 11:36:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 11:36:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 11:36:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 11:36:20,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 11:36:20,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 11:36:20,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 11:36:20,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 11:36:20,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 11:36:20,868 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 11:36:20,869 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-06 11:36:20,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:36:20 BoogieIcfgContainer [2021-05-06 11:36:20,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 11:36:20,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 11:36:20,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 11:36:20,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 11:36:20,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 11:36:20" (1/3) ... [2021-05-06 11:36:20,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a4a08a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:36:20, skipping insertion in model container [2021-05-06 11:36:20,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:20" (2/3) ... [2021-05-06 11:36:20,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a4a08a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:36:20, skipping insertion in model container [2021-05-06 11:36:20,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:36:20" (3/3) ... [2021-05-06 11:36:20,875 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2021-05-06 11:36:20,882 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 11:36:20,884 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 11:36:20,895 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 11:36:20,908 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 11:36:20,908 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 11:36:20,908 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 11:36:20,908 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 11:36:20,908 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 11:36:20,908 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 11:36:20,908 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 11:36:20,908 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 11:36:20,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:36:20,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-06 11:36:20,923 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:20,924 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:20,924 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:20,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:20,927 INFO L82 PathProgramCache]: Analyzing trace with hash -782080232, now seen corresponding path program 1 times [2021-05-06 11:36:20,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:20,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848684598] [2021-05-06 11:36:20,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:20,970 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:21,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:21,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:21,144 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:21,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848684598] [2021-05-06 11:36:21,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1848684598] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:21,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:21,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 11:36:21,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009041435] [2021-05-06 11:36:21,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 11:36:21,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:21,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 11:36:21,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 11:36:21,157 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:36:21,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:21,340 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-05-06 11:36:21,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 11:36:21,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-06 11:36:21,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:21,349 INFO L225 Difference]: With dead ends: 33 [2021-05-06 11:36:21,349 INFO L226 Difference]: Without dead ends: 16 [2021-05-06 11:36:21,351 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 137.3ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-06 11:36:21,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-06 11:36:21,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-06 11:36:21,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:36:21,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-05-06 11:36:21,385 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2021-05-06 11:36:21,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:21,385 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-05-06 11:36:21,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:36:21,385 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-05-06 11:36:21,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-06 11:36:21,386 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:21,386 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:21,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 11:36:21,386 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:21,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:21,387 INFO L82 PathProgramCache]: Analyzing trace with hash 38085627, now seen corresponding path program 1 times [2021-05-06 11:36:21,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:21,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590882660] [2021-05-06 11:36:21,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:21,408 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: -1 HavocedVariables, -1 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:21,409 WARN L75 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-06 11:36:21,412 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:21,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:21,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:36:21,546 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:21,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590882660] [2021-05-06 11:36:21,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1590882660] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:21,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:21,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-06 11:36:21,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199753622] [2021-05-06 11:36:21,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 11:36:21,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:21,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 11:36:21,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-06 11:36:21,548 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:36:21,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:21,667 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-05-06 11:36:21,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 11:36:21,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-06 11:36:21,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:21,669 INFO L225 Difference]: With dead ends: 21 [2021-05-06 11:36:21,670 INFO L226 Difference]: Without dead ends: 18 [2021-05-06 11:36:21,671 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 92.0ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-05-06 11:36:21,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-06 11:36:21,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-06 11:36:21,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:36:21,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-06 11:36:21,679 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2021-05-06 11:36:21,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:21,679 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-06 11:36:21,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:36:21,680 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-06 11:36:21,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 11:36:21,681 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:21,681 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:21,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 11:36:21,681 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:21,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:21,682 INFO L82 PathProgramCache]: Analyzing trace with hash -2056506338, now seen corresponding path program 2 times [2021-05-06 11:36:21,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:21,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467468280] [2021-05-06 11:36:21,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:21,745 WARN L240 tifierPushTermWalker]: treesize reduction 5, result has 97.9 percent of original size [2021-05-06 11:36:21,753 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:36:21,763 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:36:21,900 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-05-06 11:36:22,017 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-05-06 11:36:22,125 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-05-06 11:36:22,127 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-06 11:36:22,130 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:36:22,377 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 1 [2021-05-06 11:36:22,381 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-06 11:36:22,382 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-05-06 11:36:22,384 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:36:22,386 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:36:23,174 WARN L205 SmtUtils]: Spent 787.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-05-06 11:36:23,320 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-05-06 11:36:23,365 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-06 11:36:23,366 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-06 11:36:23,371 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:36:24,108 WARN L205 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-05-06 11:36:24,366 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-05-06 11:36:24,676 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-05-06 11:36:24,683 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-06 11:36:25,080 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2021-05-06 11:36:25,205 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:36:25,210 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:36:25,229 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-06 11:36:25,230 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:36:25,240 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-06 11:36:25,240 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-06 11:36:25,242 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:36:25,244 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:36:25,257 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-06 11:36:25,258 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-06 11:36:25,270 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:36:25,289 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-06 11:36:25,354 WARN L245 tifierPushTermWalker]: treesize reduction 5, result has 97.9 percent of original size 233 [2021-05-06 11:36:25,521 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-05-06 11:36:25,522 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 5 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1, 2=1}, 1={3=1}}, 0 SequentialAcceleration, 1 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:36:25,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:36:25,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:36:25,796 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 332 [2021-05-06 11:36:25,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:36:25,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:36:25,982 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 335 [2021-05-06 11:36:25,984 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-06 11:36:25,997 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-06 11:36:25,997 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-06 11:36:26,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 11:36:26,011 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-06 11:36:26,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 11:36:26 BoogieIcfgContainer [2021-05-06 11:36:26,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 11:36:26,013 INFO L168 Benchmark]: Toolchain (without parser) took 5684.76 ms. Allocated memory was 179.3 MB in the beginning and 218.1 MB in the end (delta: 38.8 MB). Free memory was 144.5 MB in the beginning and 193.1 MB in the end (delta: -48.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 11:36:26,017 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 179.3 MB. Free memory was 161.2 MB in the beginning and 161.1 MB in the end (delta: 105.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 11:36:26,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.30 ms. Allocated memory is still 179.3 MB. Free memory was 144.3 MB in the beginning and 162.5 MB in the end (delta: -18.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-05-06 11:36:26,017 INFO L168 Benchmark]: Boogie Preprocessor took 52.84 ms. Allocated memory is still 179.3 MB. Free memory was 162.5 MB in the beginning and 161.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 11:36:26,017 INFO L168 Benchmark]: RCFGBuilder took 309.38 ms. Allocated memory is still 179.3 MB. Free memory was 161.0 MB in the beginning and 146.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 11:36:26,018 INFO L168 Benchmark]: TraceAbstraction took 5141.52 ms. Allocated memory was 179.3 MB in the beginning and 218.1 MB in the end (delta: 38.8 MB). Free memory was 145.8 MB in the beginning and 193.1 MB in the end (delta: -47.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 11:36:26,019 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 179.3 MB. Free memory was 161.2 MB in the beginning and 161.1 MB in the end (delta: 105.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 174.30 ms. Allocated memory is still 179.3 MB. Free memory was 144.3 MB in the beginning and 162.5 MB in the end (delta: -18.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.84 ms. Allocated memory is still 179.3 MB. Free memory was 162.5 MB in the beginning and 161.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 309.38 ms. Allocated memory is still 179.3 MB. Free memory was 161.0 MB in the beginning and 146.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5141.52 ms. Allocated memory was 179.3 MB in the beginning and 218.1 MB in the end (delta: 38.8 MB). Free memory was 145.8 MB in the beginning and 193.1 MB in the end (delta: -47.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 57]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1] int __return_main; [L12] int __tmp_55_0; [L13] int __return_65; [L16] int main__x; [L17] int main__y; [L18] main__x = -50 [L19] main__y = __VERIFIER_nondet_int() [L20] COND FALSE !(!(-1000 < main__y)) [L26] COND FALSE !(!(main__y < 1000000)) [L32] COND TRUE main__x < 0 [L34] main__x = main__x + main__y [L35] int main____CPAchecker_TMP_0 = main__y; [L36] main__y = main__y + 1 [L37] __tmp_55_0 = main____CPAchecker_TMP_0 [L39] main____CPAchecker_TMP_0 = __tmp_55_0 [L40] COND TRUE main__x < 0 [L42] main__x = main__x + main__y [L43] int main____CPAchecker_TMP_0 = main__y; [L44] main__y = main__y + 1 [L45] __tmp_55_0 = main____CPAchecker_TMP_0 [L39] main____CPAchecker_TMP_0 = __tmp_55_0 [L40] COND TRUE main__x < 0 [L42] main__x = main__x + main__y [L43] int main____CPAchecker_TMP_0 = main__y; [L44] main__y = main__y + 1 [L45] __tmp_55_0 = main____CPAchecker_TMP_0 [L39] main____CPAchecker_TMP_0 = __tmp_55_0 [L40] COND FALSE !(main__x < 0) [L51] int __tmp_1; [L52] __tmp_1 = main__y > 0 [L53] int __VERIFIER_assert__cond; [L54] __VERIFIER_assert__cond = __tmp_1 [L55] COND TRUE __VERIFIER_assert__cond == 0 [L57] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 5094.1ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 9.4ms, AutomataDifference: 325.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 SDtfs, 20 SDslu, 70 SDs, 0 SdLazy, 85 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 105.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 229.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 30.4ms AutomataMinimizationTime, 2 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...