/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/sqrt1-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 08:10:13,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 08:10:13,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 08:10:13,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 08:10:13,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 08:10:13,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 08:10:13,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 08:10:13,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 08:10:13,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 08:10:13,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 08:10:13,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 08:10:13,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 08:10:13,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 08:10:13,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 08:10:13,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 08:10:13,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 08:10:13,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 08:10:13,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 08:10:13,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 08:10:13,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 08:10:13,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 08:10:13,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 08:10:13,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 08:10:13,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 08:10:13,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-04-16 08:10:13,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-04-16 08:10:13,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-04-16 08:10:13,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-04-16 08:10:13,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-04-16 08:10:13,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-04-16 08:10:13,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-16 08:10:13,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-16 08:10:13,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-16 08:10:13,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-16 08:10:13,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-16 08:10:13,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-16 08:10:13,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-16 08:10:13,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-16 08:10:13,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 08:10:13,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 08:10:13,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 08:10:13,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-04-16 08:10:13,886 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 08:10:13,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 08:10:13,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 08:10:13,890 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 08:10:13,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 08:10:13,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 08:10:13,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 08:10:13,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 08:10:13,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 08:10:13,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 08:10:13,891 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 08:10:13,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 08:10:13,892 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 08:10:13,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 08:10:13,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 08:10:13,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 08:10:13,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 08:10:13,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 08:10:13,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 08:10:13,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 08:10:13,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 08:10:13,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 08:10:13,894 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 08:10:13,894 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 08:10:14,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 08:10:14,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 08:10:14,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 08:10:14,295 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 08:10:14,296 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 08:10:14,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/sqrt1-ll_valuebound10.c [2021-04-16 08:10:14,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc2435823/020d29219aab4a4ba05220ac2ac9928e/FLAGabf0dc275 [2021-04-16 08:10:14,824 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 08:10:14,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/sqrt1-ll_valuebound10.c [2021-04-16 08:10:14,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc2435823/020d29219aab4a4ba05220ac2ac9928e/FLAGabf0dc275 [2021-04-16 08:10:15,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc2435823/020d29219aab4a4ba05220ac2ac9928e [2021-04-16 08:10:15,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 08:10:15,247 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 08:10:15,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 08:10:15,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 08:10:15,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 08:10:15,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 08:10:15" (1/1) ... [2021-04-16 08:10:15,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a91eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:15, skipping insertion in model container [2021-04-16 08:10:15,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 08:10:15" (1/1) ... [2021-04-16 08:10:15,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 08:10:15,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 08:10:15,385 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/sqrt1-ll_valuebound10.c[520,533] [2021-04-16 08:10:15,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 08:10:15,407 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 08:10:15,424 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/sqrt1-ll_valuebound10.c[520,533] [2021-04-16 08:10:15,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 08:10:15,449 INFO L208 MainTranslator]: Completed translation [2021-04-16 08:10:15,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:15 WrapperNode [2021-04-16 08:10:15,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 08:10:15,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 08:10:15,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 08:10:15,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 08:10:15,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:15" (1/1) ... [2021-04-16 08:10:15,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:15" (1/1) ... [2021-04-16 08:10:15,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:15" (1/1) ... [2021-04-16 08:10:15,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:15" (1/1) ... [2021-04-16 08:10:15,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:15" (1/1) ... [2021-04-16 08:10:15,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:15" (1/1) ... [2021-04-16 08:10:15,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:15" (1/1) ... [2021-04-16 08:10:15,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 08:10:15,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 08:10:15,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 08:10:15,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 08:10:15,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:15" (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 [2021-04-16 08:10:15,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 08:10:15,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 08:10:15,614 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 08:10:15,614 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-04-16 08:10:15,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 08:10:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 08:10:15,615 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 08:10:15,615 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 08:10:15,615 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 08:10:15,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 08:10:15,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-16 08:10:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-04-16 08:10:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 08:10:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 08:10:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 08:10:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 08:10:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 08:10:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 08:10:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 08:10:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 08:10:15,925 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 08:10:15,925 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 08:10:15,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 08:10:15 BoogieIcfgContainer [2021-04-16 08:10:15,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 08:10:15,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 08:10:15,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 08:10:15,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 08:10:15,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 08:10:15" (1/3) ... [2021-04-16 08:10:15,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86e2590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 08:10:15, skipping insertion in model container [2021-04-16 08:10:15,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:10:15" (2/3) ... [2021-04-16 08:10:15,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86e2590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 08:10:15, skipping insertion in model container [2021-04-16 08:10:15,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 08:10:15" (3/3) ... [2021-04-16 08:10:15,947 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound10.c [2021-04-16 08:10:15,952 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 08:10:15,957 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 08:10:15,970 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 08:10:15,987 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 08:10:15,988 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 08:10:15,988 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 08:10:15,988 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 08:10:15,988 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 08:10:15,988 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 08:10:15,988 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 08:10:15,988 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 08:10:16,002 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-04-16 08:10:16,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-04-16 08:10:16,008 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 08:10:16,009 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 08:10:16,009 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 08:10:16,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 08:10:16,015 INFO L82 PathProgramCache]: Analyzing trace with hash 326851384, now seen corresponding path program 1 times [2021-04-16 08:10:16,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 08:10:16,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943971386] [2021-04-16 08:10:16,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 08:10:16,094 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 08:10:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:10:16,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:16,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:16,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:16,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:16,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 08:10:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:10:16,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:16,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:16,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-04-16 08:10:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:10:16,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:16,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:16,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:16,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:16,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 08:10:16,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943971386] [2021-04-16 08:10:16,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 08:10:16,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-16 08:10:16,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934728197] [2021-04-16 08:10:16,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-16 08:10:16,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 08:10:16,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-16 08:10:16,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 08:10:16,319 INFO L87 Difference]: Start difference. First operand has 31 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-04-16 08:10:16,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 08:10:16,471 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2021-04-16 08:10:16,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-16 08:10:16,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-04-16 08:10:16,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 08:10:16,491 INFO L225 Difference]: With dead ends: 53 [2021-04-16 08:10:16,491 INFO L226 Difference]: Without dead ends: 26 [2021-04-16 08:10:16,495 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 08:10:16,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-04-16 08:10:16,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-04-16 08:10:16,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-04-16 08:10:16,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2021-04-16 08:10:16,558 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 17 [2021-04-16 08:10:16,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 08:10:16,559 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-04-16 08:10:16,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-04-16 08:10:16,559 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2021-04-16 08:10:16,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-04-16 08:10:16,562 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 08:10:16,562 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 08:10:16,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 08:10:16,562 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 08:10:16,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 08:10:16,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1008578050, now seen corresponding path program 1 times [2021-04-16 08:10:16,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 08:10:16,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199137857] [2021-04-16 08:10:16,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 08:10:16,571 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 08:10:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:10:16,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:16,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:16,662 INFO L142 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-04-16 08:10:16,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 08:10:16,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:16,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 08:10:16,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:16,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 08:10:16,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:16,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:16,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 08:10:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:10:16,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:16,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:16,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-04-16 08:10:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 08:10:16,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 08:10:16,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 08:10:16,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 08:10:16,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199137857] [2021-04-16 08:10:16,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 08:10:16,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-16 08:10:16,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516926994] [2021-04-16 08:10:16,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-16 08:10:16,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 08:10:16,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-16 08:10:16,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-16 08:10:16,798 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-04-16 08:10:17,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 08:10:17,199 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2021-04-16 08:10:17,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-16 08:10:17,199 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-04-16 08:10:17,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 08:10:17,201 INFO L225 Difference]: With dead ends: 40 [2021-04-16 08:10:17,201 INFO L226 Difference]: Without dead ends: 38 [2021-04-16 08:10:17,202 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 224.8ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-04-16 08:10:17,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-04-16 08:10:17,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-04-16 08:10:17,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2021-04-16 08:10:17,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2021-04-16 08:10:17,218 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 17 [2021-04-16 08:10:17,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 08:10:17,219 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2021-04-16 08:10:17,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-04-16 08:10:17,219 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2021-04-16 08:10:17,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-04-16 08:10:17,219 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 08:10:17,220 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 08:10:17,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 08:10:17,220 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 08:10:17,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 08:10:17,220 INFO L82 PathProgramCache]: Analyzing trace with hash -789682422, now seen corresponding path program 1 times [2021-04-16 08:10:17,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 08:10:17,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321818281] [2021-04-16 08:10:17,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 08:10:17,227 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 08:10:17,266 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-04-16 08:10:17,267 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-04-16 08:10:17,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-16 08:10:17,282 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-04-16 08:10:17,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 08:10:17 BoogieIcfgContainer [2021-04-16 08:10:17,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 08:10:17,283 INFO L168 Benchmark]: Toolchain (without parser) took 2036.12 ms. Allocated memory was 170.9 MB in the beginning and 205.5 MB in the end (delta: 34.6 MB). Free memory was 136.3 MB in the beginning and 185.7 MB in the end (delta: -49.4 MB). Peak memory consumption was 50.8 MB. Max. memory is 8.0 GB. [2021-04-16 08:10:17,283 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 170.9 MB. Free memory was 152.7 MB in the beginning and 152.6 MB in the end (delta: 88.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 08:10:17,284 INFO L168 Benchmark]: CACSL2BoogieTranslator took 198.19 ms. Allocated memory is still 170.9 MB. Free memory was 136.1 MB in the beginning and 126.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-04-16 08:10:17,284 INFO L168 Benchmark]: Boogie Preprocessor took 82.65 ms. Allocated memory is still 170.9 MB. Free memory was 126.4 MB in the beginning and 153.8 MB in the end (delta: -27.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-04-16 08:10:17,285 INFO L168 Benchmark]: RCFGBuilder took 391.32 ms. Allocated memory is still 170.9 MB. Free memory was 153.8 MB in the beginning and 139.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-04-16 08:10:17,285 INFO L168 Benchmark]: TraceAbstraction took 1354.17 ms. Allocated memory was 170.9 MB in the beginning and 205.5 MB in the end (delta: 34.6 MB). Free memory was 139.1 MB in the beginning and 185.7 MB in the end (delta: -46.6 MB). Peak memory consumption was 55.0 MB. Max. memory is 8.0 GB. [2021-04-16 08:10:17,287 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 170.9 MB. Free memory was 152.7 MB in the beginning and 152.6 MB in the end (delta: 88.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 198.19 ms. Allocated memory is still 170.9 MB. Free memory was 136.1 MB in the beginning and 126.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 82.65 ms. Allocated memory is still 170.9 MB. Free memory was 126.4 MB in the beginning and 153.8 MB in the end (delta: -27.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 391.32 ms. Allocated memory is still 170.9 MB. Free memory was 153.8 MB in the beginning and 139.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1354.17 ms. Allocated memory was 170.9 MB in the beginning and 205.5 MB in the end (delta: 34.6 MB). Free memory was 139.1 MB in the beginning and 185.7 MB in the end (delta: -46.6 MB). Peak memory consumption was 55.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: 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: [L21] int n; [L22] long long a, s, t; [L23] n = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(n>=0 && n<=10) [L9] COND FALSE !(!cond) [L24] RET assume_abort_if_not(n>=0 && n<=10) [L26] a = 0 [L27] s = 1 [L28] t = 1 [L30] COND TRUE 1 [L31] CALL __VERIFIER_assert(t == 2*a + 1) [L12] COND FALSE !(!(cond)) [L31] RET __VERIFIER_assert(t == 2*a + 1) [L32] CALL __VERIFIER_assert(s == (a + 1) * (a + 1)) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1286.0ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 13.4ms, AutomataDifference: 591.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 49 SDtfs, 40 SDslu, 32 SDs, 0 SdLazy, 99 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 300.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 270.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=2, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 61.5ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 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...