/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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 -i ../../../trunk/examples/svcomp/bitvector/gcd_3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:11:47,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:11:47,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:11:47,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:11:47,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:11:47,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:11:47,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:11:47,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:11:47,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:11:47,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:11:47,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:11:47,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:11:47,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:11:47,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:11:47,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:11:47,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:11:47,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:11:47,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:11:47,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:11:47,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:11:47,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:11:47,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:11:47,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:11:47,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:11:47,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:11:47,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:11:47,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:11:47,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:11:47,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:11:47,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:11:47,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:11:47,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:11:47,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:11:47,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:11:47,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:11:47,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:11:47,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:11:47,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:11:47,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:11:47,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:11:48,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:11:48,000 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 [2020-10-14 00:11:48,023 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:11:48,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:11:48,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:11:48,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:11:48,027 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:11:48,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:11:48,027 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:11:48,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:11:48,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:11:48,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:11:48,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:11:48,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:11:48,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:11:48,028 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:11:48,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:11:48,029 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:11:48,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:11:48,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:11:48,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:11:48,030 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:11:48,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:11:48,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:11:48,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:11:48,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:11:48,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:11:48,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:11:48,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:11:48,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:11:48,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:11:48,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:11:48,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:11:48,361 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:11:48,365 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:11:48,366 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:11:48,367 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:11:48,368 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/gcd_3.c [2020-10-14 00:11:48,428 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0448f1230/68dfbd9c8e8a4ed689a5497d328329e9/FLAG5dfa88abc [2020-10-14 00:11:48,857 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:11:48,858 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/gcd_3.c [2020-10-14 00:11:48,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0448f1230/68dfbd9c8e8a4ed689a5497d328329e9/FLAG5dfa88abc [2020-10-14 00:11:49,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0448f1230/68dfbd9c8e8a4ed689a5497d328329e9 [2020-10-14 00:11:49,261 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:11:49,263 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:11:49,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:11:49,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:11:49,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:11:49,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:11:49" (1/1) ... [2020-10-14 00:11:49,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457b3941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:11:49, skipping insertion in model container [2020-10-14 00:11:49,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:11:49" (1/1) ... [2020-10-14 00:11:49,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:11:49,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:11:49,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:11:49,559 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:11:49,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:11:49,588 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:11:49,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:11:49 WrapperNode [2020-10-14 00:11:49,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:11:49,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:11:49,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:11:49,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:11:49,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:11:49" (1/1) ... [2020-10-14 00:11:49,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:11:49" (1/1) ... [2020-10-14 00:11:49,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:11:49" (1/1) ... [2020-10-14 00:11:49,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:11:49" (1/1) ... [2020-10-14 00:11:49,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:11:49" (1/1) ... [2020-10-14 00:11:49,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:11:49" (1/1) ... [2020-10-14 00:11:49,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:11:49" (1/1) ... [2020-10-14 00:11:49,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:11:49,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:11:49,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:11:49,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:11:49,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:11:49" (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 [2020-10-14 00:11:49,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:11:49,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:11:49,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 00:11:49,798 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd_test [2020-10-14 00:11:49,798 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:11:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:11:49,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 00:11:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 00:11:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure gcd_test [2020-10-14 00:11:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:11:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:11:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:11:50,118 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:11:50,118 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:11:50,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:11:50 BoogieIcfgContainer [2020-10-14 00:11:50,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:11:50,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:11:50,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:11:50,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:11:50,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:11:49" (1/3) ... [2020-10-14 00:11:50,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ec8005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:11:50, skipping insertion in model container [2020-10-14 00:11:50,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:11:49" (2/3) ... [2020-10-14 00:11:50,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ec8005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:11:50, skipping insertion in model container [2020-10-14 00:11:50,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:11:50" (3/3) ... [2020-10-14 00:11:50,139 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd_3.c [2020-10-14 00:11:50,151 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:11:50,163 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:11:50,179 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:11:50,216 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:11:50,216 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:11:50,216 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:11:50,216 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:11:50,217 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:11:50,217 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:11:50,217 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:11:50,217 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:11:50,243 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-14 00:11:50,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 00:11:50,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:50,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:50,255 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:50,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:50,263 INFO L82 PathProgramCache]: Analyzing trace with hash 578872383, now seen corresponding path program 1 times [2020-10-14 00:11:50,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:50,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495433447] [2020-10-14 00:11:50,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:50,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:50,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:50,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:50,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 00:11:50,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:11:50,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-14 00:11:50,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:50,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 00:11:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:50,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 00:11:50,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:11:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:50,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:50,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:50,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:11:50,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:50,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:11:50,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:50,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:50,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:50,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:50,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:50,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:11:50,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:11:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:50,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:51,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:51,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:11:51,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:51,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 00:11:51,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:51,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:51,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:51,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:11:51,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:51,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:11:51,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495433447] [2020-10-14 00:11:51,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:11:51,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-14 00:11:51,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678313075] [2020-10-14 00:11:51,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-14 00:11:51,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:11:51,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-14 00:11:51,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-14 00:11:51,067 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-10-14 00:11:51,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:11:51,088 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2020-10-14 00:11:51,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-14 00:11:51,090 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-10-14 00:11:51,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:11:51,099 INFO L225 Difference]: With dead ends: 44 [2020-10-14 00:11:51,099 INFO L226 Difference]: Without dead ends: 20 [2020-10-14 00:11:51,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-14 00:11:51,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-14 00:11:51,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-14 00:11:51,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-14 00:11:51,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-10-14 00:11:51,143 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 19 [2020-10-14 00:11:51,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:11:51,143 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-10-14 00:11:51,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-14 00:11:51,144 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-10-14 00:11:51,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 00:11:51,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:51,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:51,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:11:51,146 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:51,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:51,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1364926403, now seen corresponding path program 1 times [2020-10-14 00:11:51,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:51,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719867090] [2020-10-14 00:11:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:51,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:51,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:51,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:51,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 00:11:51,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:11:51,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-14 00:11:51,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:51,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:51,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:11:51,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 00:11:51,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 00:11:51,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:51,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:11:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:51,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:51,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:51,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:11:51,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:51,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:51,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:51,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:51,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:51,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:51,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:51,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:51,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:11:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:51,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:51,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:51,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:11:51,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:51,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 00:11:51,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:51,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:51,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:11:51,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:11:51,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 00:11:51,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:11:51,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719867090] [2020-10-14 00:11:51,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:11:51,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:11:51,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493351097] [2020-10-14 00:11:51,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:11:51,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:11:51,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:11:51,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:11:51,726 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2020-10-14 00:11:51,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:11:51,806 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-10-14 00:11:51,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:11:51,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-14 00:11:51,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:11:51,810 INFO L225 Difference]: With dead ends: 35 [2020-10-14 00:11:51,811 INFO L226 Difference]: Without dead ends: 25 [2020-10-14 00:11:51,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:11:51,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-14 00:11:51,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2020-10-14 00:11:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 00:11:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-14 00:11:51,818 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 19 [2020-10-14 00:11:51,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:11:51,819 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-14 00:11:51,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:11:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-14 00:11:51,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 00:11:51,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:51,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:51,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:11:51,820 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:51,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:51,821 INFO L82 PathProgramCache]: Analyzing trace with hash 2065990981, now seen corresponding path program 1 times [2020-10-14 00:11:51,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:51,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058524351] [2020-10-14 00:11:51,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:51,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:51,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:51,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 00:11:51,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:51,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 00:11:51,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:51,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:51,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:11:51,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:11:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:11:51,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:51,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:11:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:51,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:51,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:51,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:11:51,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:51,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:51,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:51,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:51,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:51,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:51,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:51,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:51,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:11:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:51,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:51,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:51,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:11:51,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:51,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:11:51,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:51,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:51,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:11:51,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:51,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 00:11:51,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:51,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:11:51,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058524351] [2020-10-14 00:11:51,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:11:51,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 00:11:51,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142717562] [2020-10-14 00:11:51,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:11:51,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:11:51,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:11:51,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:11:51,976 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 8 states. [2020-10-14 00:11:52,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:11:52,087 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2020-10-14 00:11:52,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 00:11:52,087 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-14 00:11:52,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:11:52,089 INFO L225 Difference]: With dead ends: 34 [2020-10-14 00:11:52,090 INFO L226 Difference]: Without dead ends: 24 [2020-10-14 00:11:52,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:11:52,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-14 00:11:52,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-10-14 00:11:52,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-14 00:11:52,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-14 00:11:52,096 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 19 [2020-10-14 00:11:52,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:11:52,097 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-14 00:11:52,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:11:52,097 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-14 00:11:52,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 00:11:52,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:52,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:52,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:11:52,098 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:52,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:52,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1807825543, now seen corresponding path program 1 times [2020-10-14 00:11:52,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:52,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038625722] [2020-10-14 00:11:52,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:52,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:52,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:52,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 00:11:52,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:52,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 00:11:52,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:52,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:52,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:11:52,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:11:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:11:52,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:52,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:11:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:52,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:52,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:52,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:11:52,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:52,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:11:52,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:52,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:52,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:11:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:11:52,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:11:52,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 00:11:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:11:52,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:11:52,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:11:52,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:11:52,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:11:52,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 00:11:52,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:11:52,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:11:52,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:11:52,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:11:52,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 00:11:52,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:11:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:11:52,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038625722] [2020-10-14 00:11:52,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:11:52,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 00:11:52,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471817295] [2020-10-14 00:11:52,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:11:52,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:11:52,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:11:52,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:11:52,216 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2020-10-14 00:11:52,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:11:52,261 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2020-10-14 00:11:52,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:11:52,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-14 00:11:52,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:11:52,263 INFO L225 Difference]: With dead ends: 34 [2020-10-14 00:11:52,263 INFO L226 Difference]: Without dead ends: 21 [2020-10-14 00:11:52,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:11:52,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-14 00:11:52,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-14 00:11:52,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 00:11:52,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-14 00:11:52,269 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2020-10-14 00:11:52,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:11:52,269 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-14 00:11:52,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:11:52,269 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-14 00:11:52,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 00:11:52,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:11:52,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:11:52,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:11:52,271 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:11:52,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:11:52,271 INFO L82 PathProgramCache]: Analyzing trace with hash -41516072, now seen corresponding path program 1 times [2020-10-14 00:11:52,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:11:52,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265348538] [2020-10-14 00:11:52,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:11:52,279 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-14 00:11:52,279 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-14 00:11:52,280 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 00:11:52,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:11:52,302 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-14 00:11:52,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 12:11:52 BoogieIcfgContainer [2020-10-14 00:11:52,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 00:11:52,306 INFO L168 Benchmark]: Toolchain (without parser) took 3042.62 ms. Allocated memory was 148.9 MB in the beginning and 232.3 MB in the end (delta: 83.4 MB). Free memory was 105.1 MB in the beginning and 117.0 MB in the end (delta: -11.8 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. [2020-10-14 00:11:52,307 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 00:11:52,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.17 ms. Allocated memory is still 148.9 MB. Free memory was 104.9 MB in the beginning and 94.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-10-14 00:11:52,309 INFO L168 Benchmark]: Boogie Preprocessor took 130.86 ms. Allocated memory was 148.9 MB in the beginning and 204.5 MB in the end (delta: 55.6 MB). Free memory was 94.9 MB in the beginning and 182.5 MB in the end (delta: -87.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-10-14 00:11:52,310 INFO L168 Benchmark]: RCFGBuilder took 403.64 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 169.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-10-14 00:11:52,311 INFO L168 Benchmark]: TraceAbstraction took 2176.39 ms. Allocated memory was 204.5 MB in the beginning and 232.3 MB in the end (delta: 27.8 MB). Free memory was 169.0 MB in the beginning and 117.0 MB in the end (delta: 52.0 MB). Peak memory consumption was 79.8 MB. Max. memory is 7.1 GB. [2020-10-14 00:11:52,315 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 325.17 ms. Allocated memory is still 148.9 MB. Free memory was 104.9 MB in the beginning and 94.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.86 ms. Allocated memory was 148.9 MB in the beginning and 204.5 MB in the end (delta: 55.6 MB). Free memory was 94.9 MB in the beginning and 182.5 MB in the end (delta: -87.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 403.64 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 169.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2176.39 ms. Allocated memory was 204.5 MB in the beginning and 232.3 MB in the end (delta: 27.8 MB). Free memory was 169.0 MB in the beginning and 117.0 MB in the end (delta: 52.0 MB). Peak memory consumption was 79.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: 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: [L28] signed char x = __VERIFIER_nondet_char(); [L29] signed char y = __VERIFIER_nondet_char(); [L30] signed char g; [L32] CALL, EXPR gcd_test(x, y) [L12] signed char t; [L14] COND FALSE !(a < (signed char)0) [L15] COND TRUE b < (signed char)0 [L15] b = -b [L17] COND TRUE b != (signed char)0 [L18] t = b [L19] b = a % b [L20] a = t [L17] COND FALSE !(b != (signed char)0) [L22] return a; [L32] RET, EXPR gcd_test(x, y) [L32] g = gcd_test(x, y) [L34] COND TRUE x > (signed char)0 [L35] CALL __VERIFIER_assert(x >= g) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 2.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 84 SDtfs, 19 SDslu, 172 SDs, 0 SdLazy, 108 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 3258 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...