/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 SingleStatement --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:17:18,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:17:18,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:17:18,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:17:18,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:17:18,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:17:18,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:17:18,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:17:18,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:17:18,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:17:18,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:17:18,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:17:18,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:17:18,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:17:18,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:17:18,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:17:18,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:17:18,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:17:18,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:17:18,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:17:18,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:17:18,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:17:18,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:17:18,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:17:18,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:17:18,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:17:18,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:17:18,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:17:18,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:17:18,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:17:18,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:17:18,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:17:18,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:17:18,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:17:18,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:17:18,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:17:18,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:17:18,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:17:18,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:17:18,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:17:18,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:17:18,998 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 [2020-09-24 19:17:19,054 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:17:19,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:17:19,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:17:19,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:17:19,056 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:17:19,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:17:19,057 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:17:19,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:17:19,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:17:19,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:17:19,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:17:19,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:17:19,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:17:19,059 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:17:19,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:17:19,060 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:17:19,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:17:19,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:17:19,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:17:19,061 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:17:19,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:17:19,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:17:19,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:17:19,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:17:19,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:17:19,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:17:19,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:17:19,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:17:19,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:17:19,063 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 -> SingleStatement 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:17:19,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:17:19,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:17:19,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:17:19,598 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:17:19,599 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:17:19,600 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2020-09-24 19:17:19,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6a4dc56c/8368cc30adca40f3b1f703607fbbb615/FLAG6f982fbe1 [2020-09-24 19:17:20,261 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:17:20,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1231b.c [2020-09-24 19:17:20,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6a4dc56c/8368cc30adca40f3b1f703607fbbb615/FLAG6f982fbe1 [2020-09-24 19:17:20,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6a4dc56c/8368cc30adca40f3b1f703607fbbb615 [2020-09-24 19:17:20,612 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:17:20,619 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:17:20,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:17:20,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:17:20,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:17:20,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:20" (1/1) ... [2020-09-24 19:17:20,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693e2903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:20, skipping insertion in model container [2020-09-24 19:17:20,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:20" (1/1) ... [2020-09-24 19:17:20,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:17:20,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:17:20,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:17:20,924 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:17:20,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:17:21,061 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:17:21,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:21 WrapperNode [2020-09-24 19:17:21,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:17:21,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:17:21,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:17:21,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:17:21,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:21" (1/1) ... [2020-09-24 19:17:21,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:21" (1/1) ... [2020-09-24 19:17:21,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:21" (1/1) ... [2020-09-24 19:17:21,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:21" (1/1) ... [2020-09-24 19:17:21,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:21" (1/1) ... [2020-09-24 19:17:21,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:21" (1/1) ... [2020-09-24 19:17:21,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:21" (1/1) ... [2020-09-24 19:17:21,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:17:21,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:17:21,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:17:21,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:17:21,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:17:21,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:17:21,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:17:21,188 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-24 19:17:21,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-24 19:17:21,188 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2020-09-24 19:17:21,188 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:17:21,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:17:21,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 19:17:21,189 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-24 19:17:21,189 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-24 19:17:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:17:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 19:17:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:17:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:17:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2020-09-24 19:17:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:17:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:17:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:17:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 19:17:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:17:21,585 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:17:21,585 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 19:17:21,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:21 BoogieIcfgContainer [2020-09-24 19:17:21,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:17:21,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:17:21,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:17:21,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:17:21,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:17:20" (1/3) ... [2020-09-24 19:17:21,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434f531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:21, skipping insertion in model container [2020-09-24 19:17:21,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:21" (2/3) ... [2020-09-24 19:17:21,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434f531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:21, skipping insertion in model container [2020-09-24 19:17:21,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:21" (3/3) ... [2020-09-24 19:17:21,601 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2020-09-24 19:17:21,613 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:17:21,623 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:17:21,646 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:17:21,674 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:17:21,674 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:17:21,675 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:17:21,675 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:17:21,675 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:17:21,675 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:17:21,675 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:17:21,675 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:17:21,697 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2020-09-24 19:17:21,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 19:17:21,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:21,707 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:21,707 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:21,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:21,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1497092675, now seen corresponding path program 1 times [2020-09-24 19:17:21,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:21,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998539426] [2020-09-24 19:17:21,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:21,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:21,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:22,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:22,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 19:17:22,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:17:22,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-09-24 19:17:22,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:22,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:22,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 19:17:22,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:22,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 19:17:22,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:22,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:22,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:22,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:22,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:22,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:17:22,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:22,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:22,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:22,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 19:17:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:22,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:22,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:22,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:17:22,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:22,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:17:22,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:22,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:22,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:22,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 19:17:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:22,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:22,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:22,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:22,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:17:22,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:17:22,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:17:22,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:22,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:22,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 19:17:22,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:22,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:22,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:22,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:22,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:22,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 19:17:22,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:22,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:17:22,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:22,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:22,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 19:17:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:22,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:17:22,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998539426] [2020-09-24 19:17:22,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:22,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:17:22,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032664991] [2020-09-24 19:17:22,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:17:22,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:22,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:17:22,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:17:22,604 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 4 states. [2020-09-24 19:17:22,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:22,860 INFO L93 Difference]: Finished difference Result 141 states and 163 transitions. [2020-09-24 19:17:22,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:17:22,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-09-24 19:17:22,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:22,877 INFO L225 Difference]: With dead ends: 141 [2020-09-24 19:17:22,878 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 19:17:22,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:17:22,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 19:17:22,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-24 19:17:22,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 19:17:22,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2020-09-24 19:17:22,969 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 40 [2020-09-24 19:17:22,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:22,970 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2020-09-24 19:17:22,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:17:22,970 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2020-09-24 19:17:22,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 19:17:22,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:22,974 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:22,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:17:22,974 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:22,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:22,975 INFO L82 PathProgramCache]: Analyzing trace with hash 2105627481, now seen corresponding path program 1 times [2020-09-24 19:17:22,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:22,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16891675] [2020-09-24 19:17:22,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:23,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:23,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:23,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 19:17:23,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:23,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-24 19:17:23,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:23,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:23,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 19:17:23,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:23,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:23,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:23,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:23,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:23,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:23,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:23,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:17:23,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:23,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:23,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:23,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:23,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:23,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 19:17:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:23,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:23,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:23,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:17:23,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:23,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:17:23,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:23,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:23,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:23,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:23,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:23,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 19:17:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:23,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:23,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:23,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:17:23,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:23,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 19:17:23,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:23,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 19:17:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:23,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:23,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:23,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:23,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:23,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 19:17:23,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:23,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 19:17:23,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:23,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:23,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:23,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:17:23,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:17:23,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16891675] [2020-09-24 19:17:23,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:23,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:17:23,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778156921] [2020-09-24 19:17:23,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:17:23,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:23,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:17:23,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:23,503 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 6 states. [2020-09-24 19:17:23,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:23,736 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-09-24 19:17:23,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:17:23,737 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-09-24 19:17:23,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:23,742 INFO L225 Difference]: With dead ends: 88 [2020-09-24 19:17:23,742 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 19:17:23,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:17:23,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 19:17:23,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-09-24 19:17:23,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 19:17:23,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-09-24 19:17:23,759 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 54 [2020-09-24 19:17:23,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:23,760 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-09-24 19:17:23,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:17:23,760 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-09-24 19:17:23,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 19:17:23,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:23,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:23,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:17:23,763 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:23,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:23,764 INFO L82 PathProgramCache]: Analyzing trace with hash -14326599, now seen corresponding path program 1 times [2020-09-24 19:17:23,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:23,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650013063] [2020-09-24 19:17:23,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:23,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:23,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:23,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 19:17:23,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:23,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-24 19:17:23,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:23,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-24 19:17:23,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:23,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:23,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:23,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:23,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:23,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:23,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:23,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:17:23,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:23,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:23,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 19:17:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:23,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:23,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:23,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:17:23,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:23,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:17:23,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:23,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:23,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:23,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:23,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:23,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 19:17:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:24,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:24,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:24,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 19:17:24,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:24,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 19:17:24,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:24,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:24,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 19:17:24,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:24,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:24,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:24,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:24,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:24,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:17:24,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:24,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 19:17:24,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:24,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:17:24,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:17:24,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650013063] [2020-09-24 19:17:24,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:24,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:17:24,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45489559] [2020-09-24 19:17:24,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:17:24,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:24,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:17:24,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:24,236 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 6 states. [2020-09-24 19:17:24,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:24,473 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-09-24 19:17:24,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:17:24,474 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-09-24 19:17:24,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:24,476 INFO L225 Difference]: With dead ends: 92 [2020-09-24 19:17:24,476 INFO L226 Difference]: Without dead ends: 83 [2020-09-24 19:17:24,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:17:24,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-24 19:17:24,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2020-09-24 19:17:24,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 19:17:24,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-09-24 19:17:24,488 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 55 [2020-09-24 19:17:24,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:24,488 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-09-24 19:17:24,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:17:24,489 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-09-24 19:17:24,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 19:17:24,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:24,491 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:24,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:17:24,491 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:24,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:24,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1519558622, now seen corresponding path program 1 times [2020-09-24 19:17:24,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:24,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250908794] [2020-09-24 19:17:24,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:24,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:24,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:24,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 19:17:24,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:24,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-24 19:17:24,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-24 19:17:24,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:24,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:24,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:24,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:24,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:24,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:24,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:24,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:17:24,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:24,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:24,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:24,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:24,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:24,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 19:17:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:24,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:24,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:24,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:17:24,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:24,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:17:24,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:24,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:24,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:24,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:24,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:24,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 19:17:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:24,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:24,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:24,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 19:17:24,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:24,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-24 19:17:24,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:24,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:24,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 19:17:24,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:24,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:24,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:24,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:24,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:24,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 19:17:24,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:24,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 19:17:24,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:24,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:24,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:24,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 19:17:24,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:17:24,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250908794] [2020-09-24 19:17:24,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:24,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:17:24,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552478548] [2020-09-24 19:17:24,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:17:24,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:24,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:17:24,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:24,982 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 6 states. [2020-09-24 19:17:25,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:25,198 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-09-24 19:17:25,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:17:25,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-09-24 19:17:25,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:25,200 INFO L225 Difference]: With dead ends: 92 [2020-09-24 19:17:25,200 INFO L226 Difference]: Without dead ends: 83 [2020-09-24 19:17:25,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:17:25,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-24 19:17:25,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2020-09-24 19:17:25,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 19:17:25,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-09-24 19:17:25,210 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 56 [2020-09-24 19:17:25,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:25,211 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-09-24 19:17:25,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:17:25,211 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-09-24 19:17:25,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 19:17:25,213 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:25,213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:25,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:17:25,213 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:25,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:25,214 INFO L82 PathProgramCache]: Analyzing trace with hash 358345182, now seen corresponding path program 1 times [2020-09-24 19:17:25,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:25,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449062994] [2020-09-24 19:17:25,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:25,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:25,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:25,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 19:17:25,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:25,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-24 19:17:25,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:25,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:25,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 19:17:25,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:25,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:25,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:25,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:25,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:25,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:17:25,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:25,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:17:25,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:25,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:25,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:25,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:25,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:25,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 19:17:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:25,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:25,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:25,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:17:25,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:25,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 19:17:25,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:25,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:25,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:25,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:25,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:25,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 19:17:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:25,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:25,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:25,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 19:17:25,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:25,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 19:17:25,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 19:17:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:17:25,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:25,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 19:17:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:25,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:25,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:25,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 19:17:25,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:25,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 19:17:25,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:25,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:17:25,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:25,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:17:25,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:25,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:17:25,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449062994] [2020-09-24 19:17:25,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:25,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:17:25,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031381808] [2020-09-24 19:17:25,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:17:25,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:25,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:17:25,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:25,671 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 6 states. [2020-09-24 19:17:25,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:25,885 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-09-24 19:17:25,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:17:25,886 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-09-24 19:17:25,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:25,888 INFO L225 Difference]: With dead ends: 92 [2020-09-24 19:17:25,888 INFO L226 Difference]: Without dead ends: 83 [2020-09-24 19:17:25,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:17:25,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-24 19:17:25,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2020-09-24 19:17:25,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 19:17:25,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-09-24 19:17:25,897 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 57 [2020-09-24 19:17:25,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:25,898 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-09-24 19:17:25,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:17:25,898 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-09-24 19:17:25,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 19:17:25,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:25,899 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:25,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:17:25,900 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:25,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:25,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1239578082, now seen corresponding path program 1 times [2020-09-24 19:17:25,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:25,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414193746] [2020-09-24 19:17:25,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 19:17:25,924 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 19:17:25,924 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 19:17:25,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:17:25,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:17:25 BoogieIcfgContainer [2020-09-24 19:17:25,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:17:25,961 INFO L168 Benchmark]: Toolchain (without parser) took 5345.83 ms. Allocated memory was 137.9 MB in the beginning and 250.6 MB in the end (delta: 112.7 MB). Free memory was 100.5 MB in the beginning and 134.1 MB in the end (delta: -33.6 MB). Peak memory consumption was 79.2 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:25,962 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 19:17:25,963 INFO L168 Benchmark]: CACSL2BoogieTranslator took 442.35 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 99.8 MB in the beginning and 179.1 MB in the end (delta: -79.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:25,964 INFO L168 Benchmark]: Boogie Preprocessor took 50.85 ms. Allocated memory is still 200.3 MB. Free memory was 179.1 MB in the beginning and 176.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:25,965 INFO L168 Benchmark]: RCFGBuilder took 477.62 ms. Allocated memory is still 200.3 MB. Free memory was 176.6 MB in the beginning and 154.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:25,966 INFO L168 Benchmark]: TraceAbstraction took 4364.92 ms. Allocated memory was 200.3 MB in the beginning and 250.6 MB in the end (delta: 50.3 MB). Free memory was 154.1 MB in the beginning and 134.1 MB in the end (delta: 20.0 MB). Peak memory consumption was 70.3 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:25,970 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 442.35 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 99.8 MB in the beginning and 179.1 MB in the end (delta: -79.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.85 ms. Allocated memory is still 200.3 MB. Free memory was 179.1 MB in the beginning and 176.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 477.62 ms. Allocated memory is still 200.3 MB. Free memory was 176.6 MB in the beginning and 154.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4364.92 ms. Allocated memory was 200.3 MB in the beginning and 250.6 MB in the end (delta: 50.3 MB). Free memory was 154.1 MB in the beginning and 134.1 MB in the end (delta: 20.0 MB). Peak memory consumption was 70.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 68]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 67, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L60] double x = __VERIFIER_nondet_double(); [L61] double y = 0.0 / 0.0; [L62] CALL, EXPR isnan_double(x) [L16] return x != x; [L62] RET, EXPR isnan_double(x) [L62] COND TRUE !isnan_double(x) [L64] CALL, EXPR fmin_double(x, y) [L45] CALL, EXPR __fpclassify_double(x) [L18] __uint32_t msw, lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] return 0; [L45] RET, EXPR __fpclassify_double(x) [L45] COND TRUE __fpclassify_double(x) == 0 [L46] return y; [L64] RET, EXPR fmin_double(x, y) [L64] double res = fmin_double(x, y); [L67] COND TRUE res != x [L68] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 401 SDtfs, 157 SDslu, 734 SDs, 0 SdLazy, 575 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred 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, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 257 ConstructedInterpolants, 0 QuantifiedInterpolants, 24072 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...