/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/nla-digbench/cohencu.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:38:04,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:38:04,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:38:04,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:38:04,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:38:04,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:38:04,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:38:04,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:38:04,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:38:04,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:38:04,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:38:04,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:38:04,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:38:04,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:38:04,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:38:04,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:38:04,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:38:04,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:38:04,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:38:04,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:38:04,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:38:04,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:38:04,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:38:04,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:38:04,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:38:04,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:38:04,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:38:04,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:38:04,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:38:04,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:38:04,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:38:04,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:38:04,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:38:04,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:38:04,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:38:04,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:38:04,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:38:04,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:38:04,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:38:04,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:38:04,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:38:04,241 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 20:38:04,296 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:38:04,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:38:04,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:38:04,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:38:04,303 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:38:04,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:38:04,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:38:04,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:38:04,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:38:04,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:38:04,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:38:04,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:38:04,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:38:04,307 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:38:04,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:38:04,308 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:38:04,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:38:04,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:38:04,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:38:04,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:38:04,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:38:04,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:38:04,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:38:04,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:38:04,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:38:04,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:38:04,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:38:04,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:38:04,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:38:04,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:38:04,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:38:04,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:38:04,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:38:04,837 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:38:04,840 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:38:04,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/cohencu.c [2020-10-27 20:38:04,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1889345fa/dd741c5f442b4f55ab0f1e3bd9f0306a/FLAG128e2b886 [2020-10-27 20:38:05,672 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:38:05,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/nla-digbench/cohencu.c [2020-10-27 20:38:05,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1889345fa/dd741c5f442b4f55ab0f1e3bd9f0306a/FLAG128e2b886 [2020-10-27 20:38:06,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1889345fa/dd741c5f442b4f55ab0f1e3bd9f0306a [2020-10-27 20:38:06,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:38:06,046 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:38:06,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:38:06,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:38:06,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:38:06,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:38:06" (1/1) ... [2020-10-27 20:38:06,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@600932f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:06, skipping insertion in model container [2020-10-27 20:38:06,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:38:06" (1/1) ... [2020-10-27 20:38:06,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:38:06,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:38:06,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:38:06,294 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:38:06,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:38:06,341 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:38:06,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:06 WrapperNode [2020-10-27 20:38:06,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:38:06,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:38:06,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:38:06,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:38:06,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:06" (1/1) ... [2020-10-27 20:38:06,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:06" (1/1) ... [2020-10-27 20:38:06,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:06" (1/1) ... [2020-10-27 20:38:06,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:06" (1/1) ... [2020-10-27 20:38:06,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:06" (1/1) ... [2020-10-27 20:38:06,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:06" (1/1) ... [2020-10-27 20:38:06,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:06" (1/1) ... [2020-10-27 20:38:06,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:38:06,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:38:06,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:38:06,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:38:06,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:06" (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 [2020-10-27 20:38:06,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:38:06,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:38:06,547 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:38:06,547 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 20:38:06,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 20:38:06,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:38:06,549 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:38:06,550 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:38:06,551 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:38:06,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:38:06,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 20:38:06,553 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 20:38:06,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 20:38:06,553 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:38:06,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:38:06,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:38:06,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:38:06,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:38:06,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:38:06,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:38:07,032 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:38:07,032 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 20:38:07,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:38:07 BoogieIcfgContainer [2020-10-27 20:38:07,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:38:07,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:38:07,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:38:07,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:38:07,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:38:06" (1/3) ... [2020-10-27 20:38:07,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc441e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:38:07, skipping insertion in model container [2020-10-27 20:38:07,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:06" (2/3) ... [2020-10-27 20:38:07,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc441e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:38:07, skipping insertion in model container [2020-10-27 20:38:07,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:38:07" (3/3) ... [2020-10-27 20:38:07,044 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu.c [2020-10-27 20:38:07,058 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:38:07,063 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:38:07,086 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:38:07,142 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:38:07,142 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:38:07,142 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:38:07,143 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:38:07,143 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:38:07,143 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:38:07,143 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:38:07,143 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:38:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-27 20:38:07,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 20:38:07,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:07,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:38:07,186 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:07,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:07,199 INFO L82 PathProgramCache]: Analyzing trace with hash 2014850862, now seen corresponding path program 1 times [2020-10-27 20:38:07,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:07,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944901761] [2020-10-27 20:38:07,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:07,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:07,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:07,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:07,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 20:38:07,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:38:07,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-27 20:38:07,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:38:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:07,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 20:38:07,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:07,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:07,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:07,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:07,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:07,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:38:07,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:07,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:07,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:07,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:07,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:07,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:38:07,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944901761] [2020-10-27 20:38:07,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:38:07,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 20:38:07,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199534898] [2020-10-27 20:38:07,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 20:38:07,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:08,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 20:38:08,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:38:08,008 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-10-27 20:38:08,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:08,265 INFO L93 Difference]: Finished difference Result 58 states and 96 transitions. [2020-10-27 20:38:08,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 20:38:08,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-27 20:38:08,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:08,279 INFO L225 Difference]: With dead ends: 58 [2020-10-27 20:38:08,280 INFO L226 Difference]: Without dead ends: 26 [2020-10-27 20:38:08,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:38:08,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-27 20:38:08,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-27 20:38:08,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 20:38:08,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2020-10-27 20:38:08,348 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 12 [2020-10-27 20:38:08,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:08,349 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2020-10-27 20:38:08,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 20:38:08,349 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2020-10-27 20:38:08,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 20:38:08,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:08,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:38:08,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:38:08,351 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:08,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:08,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1662065840, now seen corresponding path program 1 times [2020-10-27 20:38:08,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:08,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629162191] [2020-10-27 20:38:08,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:08,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:08,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:08,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 20:38:08,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:08,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-27 20:38:08,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:08,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:38:08,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:38:08,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:38:08,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:08,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:38:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:38:08,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:38:08,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:38:08,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:38:08,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:38:08,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:38:08,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:38:08,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:38:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:38:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:38:08,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:38:08,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:38:08,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629162191] [2020-10-27 20:38:08,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:38:08,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:38:08,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018430287] [2020-10-27 20:38:08,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:38:08,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:38:08,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:38:08,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:38:08,648 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 6 states. [2020-10-27 20:38:09,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:38:09,178 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2020-10-27 20:38:09,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:38:09,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-27 20:38:09,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:38:09,182 INFO L225 Difference]: With dead ends: 33 [2020-10-27 20:38:09,182 INFO L226 Difference]: Without dead ends: 30 [2020-10-27 20:38:09,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:38:09,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-27 20:38:09,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-27 20:38:09,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 20:38:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2020-10-27 20:38:09,219 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 12 [2020-10-27 20:38:09,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:38:09,220 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2020-10-27 20:38:09,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:38:09,220 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2020-10-27 20:38:09,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 20:38:09,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:38:09,221 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:38:09,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:38:09,222 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:38:09,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:38:09,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1159751394, now seen corresponding path program 1 times [2020-10-27 20:38:09,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:38:09,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348416946] [2020-10-27 20:38:09,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:38:09,249 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-27 20:38:09,249 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-27 20:38:09,249 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 20:38:09,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:38:09,273 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-27 20:38:09,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:38:09 BoogieIcfgContainer [2020-10-27 20:38:09,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:38:09,280 INFO L168 Benchmark]: Toolchain (without parser) took 3235.54 ms. Allocated memory is still 157.3 MB. Free memory was 132.9 MB in the beginning and 104.3 MB in the end (delta: 28.6 MB). Peak memory consumption was 29.2 MB. Max. memory is 8.0 GB. [2020-10-27 20:38:09,281 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 157.3 MB. Free memory was 129.5 MB in the beginning and 129.4 MB in the end (delta: 137.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:38:09,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.28 ms. Allocated memory is still 157.3 MB. Free memory was 132.2 MB in the beginning and 122.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 20:38:09,284 INFO L168 Benchmark]: Boogie Preprocessor took 86.21 ms. Allocated memory is still 157.3 MB. Free memory was 122.1 MB in the beginning and 120.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 20:38:09,285 INFO L168 Benchmark]: RCFGBuilder took 604.20 ms. Allocated memory is still 157.3 MB. Free memory was 120.7 MB in the beginning and 139.6 MB in the end (delta: -18.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. [2020-10-27 20:38:09,286 INFO L168 Benchmark]: TraceAbstraction took 2238.49 ms. Allocated memory is still 157.3 MB. Free memory was 139.1 MB in the beginning and 104.3 MB in the end (delta: 34.8 MB). Peak memory consumption was 34.8 MB. Max. memory is 8.0 GB. [2020-10-27 20:38:09,296 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 157.3 MB. Free memory was 129.5 MB in the beginning and 129.4 MB in the end (delta: 137.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 294.28 ms. Allocated memory is still 157.3 MB. Free memory was 132.2 MB in the beginning and 122.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.21 ms. Allocated memory is still 157.3 MB. Free memory was 122.1 MB in the beginning and 120.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 604.20 ms. Allocated memory is still 157.3 MB. Free memory was 120.7 MB in the beginning and 139.6 MB in the end (delta: -18.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2238.49 ms. Allocated memory is still 157.3 MB. Free memory was 139.1 MB in the beginning and 104.3 MB in the end (delta: 34.8 MB). Peak memory consumption was 34.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L23] int a, n, x, y, z; [L24] a = __VERIFIER_nondet_int() [L25] n = 0 [L26] x = 0 [L27] y = 1 [L28] z = 6 [L30] COND TRUE 1 [L31] CALL __VERIFIER_assert(z == 6 * n + 6) [L15] COND FALSE !(!(cond)) [L31] RET __VERIFIER_assert(z == 6 * n + 6) [L32] CALL __VERIFIER_assert(y == 3 * n * n + 3 * n + 1) [L15] COND TRUE !(cond) [L17] CALL reach_error() [L8] __assert_fail("0", "cohencu.c", 8, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 50 SDtfs, 28 SDslu, 42 SDs, 0 SdLazy, 85 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1254 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...