/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --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/float_req_bl_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:44:40,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:44:40,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:44:40,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:44:40,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:44:40,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:44:40,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:44:40,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:44:40,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:44:40,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:44:40,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:44:40,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:44:40,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:44:40,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:44:40,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:44:40,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:44:40,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:44:40,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:44:40,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:44:40,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:44:40,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:44:40,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:44:40,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:44:40,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:44:41,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:44:41,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:44:41,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:44:41,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:44:41,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:44:41,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:44:41,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:44:41,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:44:41,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:44:41,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:44:41,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:44:41,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:44:41,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:44:41,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:44:41,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:44:41,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:44:41,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:44:41,027 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 23:44:41,072 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:44:41,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:44:41,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:44:41,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:44:41,075 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:44:41,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:44:41,076 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:44:41,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:44:41,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:44:41,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:44:41,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:44:41,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:44:41,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:44:41,079 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:44:41,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:44:41,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:44:41,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:44:41,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:44:41,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:44:41,082 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:44:41,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:44:41,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:44:41,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:44:41,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:44:41,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:44:41,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:44:41,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:44:41,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:44:41,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:44:41,085 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=5000;interpolation-heuristic=SHALLOWEST;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=5000;interpolation-heuristic=SHALLOWEST;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=5000;interpolation-heuristic=SHALLOWEST;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=5000;interpolation-heuristic=SHALLOWEST;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=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:44:41,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:44:41,594 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:44:41,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:44:41,603 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:44:41,603 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:44:41,605 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c [2020-09-24 23:44:41,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/595c09713/817890767dad450b802d4dc8a5ccbfd1/FLAG7ac27f0ca [2020-09-24 23:44:42,198 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:44:42,199 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c [2020-09-24 23:44:42,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/595c09713/817890767dad450b802d4dc8a5ccbfd1/FLAG7ac27f0ca [2020-09-24 23:44:42,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/595c09713/817890767dad450b802d4dc8a5ccbfd1 [2020-09-24 23:44:42,553 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:44:42,560 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:44:42,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:44:42,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:44:42,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:44:42,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:44:42" (1/1) ... [2020-09-24 23:44:42,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2acd657e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:42, skipping insertion in model container [2020-09-24 23:44:42,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:44:42" (1/1) ... [2020-09-24 23:44:42,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:44:42,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:44:42,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:44:42,865 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:44:42,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:44:43,015 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:44:43,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:43 WrapperNode [2020-09-24 23:44:43,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:44:43,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:44:43,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:44:43,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:44:43,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:43" (1/1) ... [2020-09-24 23:44:43,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:43" (1/1) ... [2020-09-24 23:44:43,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:43" (1/1) ... [2020-09-24 23:44:43,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:43" (1/1) ... [2020-09-24 23:44:43,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:43" (1/1) ... [2020-09-24 23:44:43,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:43" (1/1) ... [2020-09-24 23:44:43,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:43" (1/1) ... [2020-09-24 23:44:43,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:44:43,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:44:43,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:44:43,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:44:43,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:43" (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 23:44:43,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:44:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:44:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-09-24 23:44:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-09-24 23:44:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-24 23:44:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:44:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:44:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-09-24 23:44:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:44:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 23:44:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:44:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:44:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-09-24 23:44:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-24 23:44:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:44:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:44:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:44:43,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 23:44:43,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:44:43,514 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:44:43,515 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 23:44:43,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:44:43 BoogieIcfgContainer [2020-09-24 23:44:43,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:44:43,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:44:43,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:44:43,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:44:43,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:44:42" (1/3) ... [2020-09-24 23:44:43,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9abf9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:44:43, skipping insertion in model container [2020-09-24 23:44:43,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:43" (2/3) ... [2020-09-24 23:44:43,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9abf9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:44:43, skipping insertion in model container [2020-09-24 23:44:43,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:44:43" (3/3) ... [2020-09-24 23:44:43,529 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2020-09-24 23:44:43,539 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:44:43,548 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:44:43,568 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:44:43,595 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:44:43,595 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:44:43,595 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:44:43,595 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:44:43,595 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:44:43,596 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:44:43,596 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:44:43,596 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:44:43,618 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-09-24 23:44:43,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 23:44:43,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:43,628 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] [2020-09-24 23:44:43,628 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:43,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:43,636 INFO L82 PathProgramCache]: Analyzing trace with hash 2131665852, now seen corresponding path program 1 times [2020-09-24 23:44:43,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:43,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720304262] [2020-09-24 23:44:43,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:43,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:43,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:44,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:44,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 23:44:44,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:44:44,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-09-24 23:44:44,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:44,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:44,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 23:44:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:44,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 23:44:44,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:44:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:44,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:44,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:44,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:44:44,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:44,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:44:44,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:44,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:44,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:44,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:44,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 23:44:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:44,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:44,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:44,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:44,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 23:44:44,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:44:44,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 23:44:44,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:44,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:44,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 23:44:44,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:44,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:44,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:44:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:44,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:44,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:44,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:44:44,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:44,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:44:44,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:44,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:44,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 23:44:44,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:44,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:44,404 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 23:44:44,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720304262] [2020-09-24 23:44:44,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:44:44,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 23:44:44,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646663222] [2020-09-24 23:44:44,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 23:44:44,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:44:44,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 23:44:44,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 23:44:44,432 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-09-24 23:44:44,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:44:44,719 INFO L93 Difference]: Finished difference Result 164 states and 192 transitions. [2020-09-24 23:44:44,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 23:44:44,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-09-24 23:44:44,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:44:44,735 INFO L225 Difference]: With dead ends: 164 [2020-09-24 23:44:44,735 INFO L226 Difference]: Without dead ends: 81 [2020-09-24 23:44:44,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 23:44:44,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-24 23:44:44,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-24 23:44:44,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-24 23:44:44,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2020-09-24 23:44:44,806 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 34 [2020-09-24 23:44:44,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:44:44,807 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2020-09-24 23:44:44,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 23:44:44,807 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2020-09-24 23:44:44,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 23:44:44,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:44,810 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] [2020-09-24 23:44:44,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:44:44,811 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:44,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:44,812 INFO L82 PathProgramCache]: Analyzing trace with hash -630897281, now seen corresponding path program 1 times [2020-09-24 23:44:44,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:44,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597920304] [2020-09-24 23:44:44,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:44,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:45,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:45,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 23:44:45,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:45,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-24 23:44:45,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:45,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:45,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 23:44:45,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:44:45,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:45,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:44:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:45,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:45,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:45,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:44:45,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:45,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:44:45,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:45,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:45,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:45,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:45,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:45,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 23:44:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:45,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:45,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:45,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:44:45,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:45,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-24 23:44:45,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:45,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:45,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 23:44:45,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:44:45,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:45,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:44:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:45,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:45,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:45,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:44:45,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:45,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 23:44:45,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:45,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:45,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:45,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 23:44:45,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:45,376 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 23:44:45,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597920304] [2020-09-24 23:44:45,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:44:45,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:44:45,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115463226] [2020-09-24 23:44:45,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:44:45,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:44:45,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:44:45,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:44:45,384 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand 6 states. [2020-09-24 23:44:45,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:44:45,652 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-09-24 23:44:45,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 23:44:45,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-09-24 23:44:45,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:44:45,660 INFO L225 Difference]: With dead ends: 117 [2020-09-24 23:44:45,660 INFO L226 Difference]: Without dead ends: 86 [2020-09-24 23:44:45,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 23:44:45,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-24 23:44:45,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-09-24 23:44:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 23:44:45,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-09-24 23:44:45,698 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 43 [2020-09-24 23:44:45,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:44:45,699 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-09-24 23:44:45,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:44:45,699 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-09-24 23:44:45,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 23:44:45,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:45,702 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] [2020-09-24 23:44:45,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:44:45,703 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:45,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:45,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1020330010, now seen corresponding path program 1 times [2020-09-24 23:44:45,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:45,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717028207] [2020-09-24 23:44:45,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:45,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:45,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:45,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:44:45,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:45,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-24 23:44:45,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:45,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:45,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 23:44:45,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:44:45,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:45,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:44:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:45,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:45,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:45,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:44:45,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:45,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:44:45,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:45,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:45,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:45,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:45,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 23:44:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:45,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:46,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:46,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:44:46,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:46,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 23:44:46,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:46,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:46,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 23:44:46,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:44:46,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:44:46,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:44:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:46,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:46,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:46,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:44:46,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:46,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 23:44:46,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:46,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:46,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:46,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 23:44:46,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:46,225 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 23:44:46,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717028207] [2020-09-24 23:44:46,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:44:46,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:44:46,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412570228] [2020-09-24 23:44:46,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:44:46,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:44:46,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:44:46,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:44:46,228 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states. [2020-09-24 23:44:46,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:44:46,454 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2020-09-24 23:44:46,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 23:44:46,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-09-24 23:44:46,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:44:46,456 INFO L225 Difference]: With dead ends: 121 [2020-09-24 23:44:46,456 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 23:44:46,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 23:44:46,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 23:44:46,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2020-09-24 23:44:46,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 23:44:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-09-24 23:44:46,468 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 44 [2020-09-24 23:44:46,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:44:46,469 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-09-24 23:44:46,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:44:46,469 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-09-24 23:44:46,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 23:44:46,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:46,471 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] [2020-09-24 23:44:46,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:44:46,471 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:46,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:46,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1154617628, now seen corresponding path program 1 times [2020-09-24 23:44:46,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:46,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312756002] [2020-09-24 23:44:46,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:46,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:46,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:46,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 23:44:46,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:46,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 23:44:46,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:46,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:46,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 23:44:46,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:44:46,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:46,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:44:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:46,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:46,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:46,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:44:46,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:46,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:44:46,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:46,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:46,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:46,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:46,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:46,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 23:44:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:46,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:46,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:46,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 23:44:46,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:46,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 23:44:46,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:46,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:46,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 23:44:46,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:44:46,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:46,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:44:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:46,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:46,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:46,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 23:44:46,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:46,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 23:44:46,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 23:44:46,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:46,836 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 23:44:46,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312756002] [2020-09-24 23:44:46,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:44:46,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:44:46,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478299354] [2020-09-24 23:44:46,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:44:46,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:44:46,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:44:46,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:44:46,839 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states. [2020-09-24 23:44:47,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:44:47,018 INFO L93 Difference]: Finished difference Result 125 states and 137 transitions. [2020-09-24 23:44:47,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 23:44:47,019 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-09-24 23:44:47,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:44:47,021 INFO L225 Difference]: With dead ends: 125 [2020-09-24 23:44:47,021 INFO L226 Difference]: Without dead ends: 94 [2020-09-24 23:44:47,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 23:44:47,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-24 23:44:47,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2020-09-24 23:44:47,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 23:44:47,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-09-24 23:44:47,031 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 45 [2020-09-24 23:44:47,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:44:47,032 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-09-24 23:44:47,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:44:47,032 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-09-24 23:44:47,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 23:44:47,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:47,034 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] [2020-09-24 23:44:47,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:44:47,034 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:47,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:47,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1681903777, now seen corresponding path program 1 times [2020-09-24 23:44:47,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:47,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113414722] [2020-09-24 23:44:47,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:47,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:47,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:47,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 23:44:47,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:47,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-24 23:44:47,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:47,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:47,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 23:44:47,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:44:47,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:44:47,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:44:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:47,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:47,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:47,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:44:47,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:47,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:44:47,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:47,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:47,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:47,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:47,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:47,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 23:44:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:47,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:47,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:47,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 23:44:47,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:47,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 23:44:47,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:47,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:47,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 23:44:47,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:44:47,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:47,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:44:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:47,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:47,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:47,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:44:47,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:47,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 23:44:47,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:47,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:44:47,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:47,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:44:47,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:44:47,403 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 23:44:47,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113414722] [2020-09-24 23:44:47,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:44:47,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:44:47,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830289634] [2020-09-24 23:44:47,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:44:47,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:44:47,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:44:47,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:44:47,406 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states. [2020-09-24 23:44:47,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:44:47,569 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2020-09-24 23:44:47,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 23:44:47,570 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-09-24 23:44:47,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:44:47,571 INFO L225 Difference]: With dead ends: 121 [2020-09-24 23:44:47,571 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 23:44:47,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 23:44:47,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 23:44:47,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2020-09-24 23:44:47,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 23:44:47,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-09-24 23:44:47,585 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 46 [2020-09-24 23:44:47,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:44:47,585 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-09-24 23:44:47,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:44:47,585 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-09-24 23:44:47,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 23:44:47,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:47,587 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] [2020-09-24 23:44:47,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 23:44:47,587 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:47,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:47,587 INFO L82 PathProgramCache]: Analyzing trace with hash -969429089, now seen corresponding path program 1 times [2020-09-24 23:44:47,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:47,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228833649] [2020-09-24 23:44:47,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 23:44:47,604 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 23:44:47,605 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 23:44:47,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 23:44:47,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:44:47 BoogieIcfgContainer [2020-09-24 23:44:47,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:44:47,635 INFO L168 Benchmark]: Toolchain (without parser) took 5079.31 ms. Allocated memory was 148.9 MB in the beginning and 244.8 MB in the end (delta: 95.9 MB). Free memory was 105.0 MB in the beginning and 143.2 MB in the end (delta: -38.2 MB). Peak memory consumption was 57.7 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:47,636 INFO L168 Benchmark]: CDTParser took 0.28 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. [2020-09-24 23:44:47,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 455.52 ms. Allocated memory was 148.9 MB in the beginning and 205.5 MB in the end (delta: 56.6 MB). Free memory was 104.3 MB in the beginning and 184.4 MB in the end (delta: -80.1 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:47,638 INFO L168 Benchmark]: Boogie Preprocessor took 47.12 ms. Allocated memory is still 205.5 MB. Free memory was 184.4 MB in the beginning and 182.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:47,639 INFO L168 Benchmark]: RCFGBuilder took 457.03 ms. Allocated memory is still 205.5 MB. Free memory was 182.1 MB in the beginning and 159.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:47,640 INFO L168 Benchmark]: TraceAbstraction took 4109.92 ms. Allocated memory was 205.5 MB in the beginning and 244.8 MB in the end (delta: 39.3 MB). Free memory was 158.4 MB in the beginning and 143.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:47,644 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 455.52 ms. Allocated memory was 148.9 MB in the beginning and 205.5 MB in the end (delta: 56.6 MB). Free memory was 104.3 MB in the beginning and 184.4 MB in the end (delta: -80.1 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.12 ms. Allocated memory is still 205.5 MB. Free memory was 184.4 MB in the beginning and 182.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 457.03 ms. Allocated memory is still 205.5 MB. Free memory was 182.1 MB in the beginning and 159.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4109.92 ms. Allocated memory was 205.5 MB in the beginning and 244.8 MB in the end (delta: 39.3 MB). Free memory was 158.4 MB in the beginning and 143.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 72. Possible FailurePath: [L72] float x = -0.0f; [L73] float y = 0.0f; [L75] CALL, EXPR fmax_float(x, y) [L43] CALL, EXPR __fpclassify_float(x) [L20] __uint32_t w; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; [L43] RET, EXPR __fpclassify_float(x) [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; [L75] RET, EXPR fmax_float(x, y) [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 441 SDtfs, 89 SDslu, 915 SDs, 0 SdLazy, 611 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 258 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 207 ConstructedInterpolants, 0 QuantifiedInterpolants, 17222 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...