/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/float_req_bl_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:17:40,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:17:40,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:17:40,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:17:40,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:17:40,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:17:40,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:17:40,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:17:40,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:17:40,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:17:40,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:17:40,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:17:40,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:17:40,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:17:40,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:17:40,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:17:40,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:17:40,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:17:40,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:17:40,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:17:40,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:17:40,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:17:40,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:17:40,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:17:40,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:17:40,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:17:40,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:17:40,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:17:40,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:17:40,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:17:40,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:17:40,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:17:40,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:17:40,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:17:40,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:17:40,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:17:40,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:17:40,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:17:40,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:17:40,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:17:40,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:17:40,125 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 19:17:40,172 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:17:40,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:17:40,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:17:40,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:17:40,175 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:17:40,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:17:40,176 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:17:40,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:17:40,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:17:40,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:17:40,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:17:40,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:17:40,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:17:40,179 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:17:40,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:17:40,179 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:17:40,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:17:40,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:17:40,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:17:40,180 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:17:40,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:17:40,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:17:40,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:17:40,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:17:40,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:17:40,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:17:40,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:17:40,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:17:40,182 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:17:40,182 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 19:17:40,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:17:40,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:17:40,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:17:40,726 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:17:40,726 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:17:40,727 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2020-09-24 19:17:40,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7be9ca8a/0a86d6c66d8b483a95279c44bd74702d/FLAGc94b7e158 [2020-09-24 19:17:41,352 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:17:41,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2020-09-24 19:17:41,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7be9ca8a/0a86d6c66d8b483a95279c44bd74702d/FLAGc94b7e158 [2020-09-24 19:17:41,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7be9ca8a/0a86d6c66d8b483a95279c44bd74702d [2020-09-24 19:17:41,688 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:17:41,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:17:41,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:17:41,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:17:41,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:17:41,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:41" (1/1) ... [2020-09-24 19:17:41,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@224796be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:41, skipping insertion in model container [2020-09-24 19:17:41,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:41" (1/1) ... [2020-09-24 19:17:41,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:17:41,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:17:42,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:17:42,084 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:17:42,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:17:42,255 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:17:42,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:42 WrapperNode [2020-09-24 19:17:42,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:17:42,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:17:42,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:17:42,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:17:42,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:42" (1/1) ... [2020-09-24 19:17:42,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:42" (1/1) ... [2020-09-24 19:17:42,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:42" (1/1) ... [2020-09-24 19:17:42,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:42" (1/1) ... [2020-09-24 19:17:42,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:42" (1/1) ... [2020-09-24 19:17:42,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:42" (1/1) ... [2020-09-24 19:17:42,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:42" (1/1) ... [2020-09-24 19:17:42,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:17:42,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:17:42,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:17:42,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:17:42,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:42" (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 19:17:42,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:17:42,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:17:42,408 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2020-09-24 19:17:42,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-09-24 19:17:42,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:17:42,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:17:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2020-09-24 19:17:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:17:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 19:17:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:17:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:17:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:17:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 19:17:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-09-24 19:17:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:17:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:17:42,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:17:42,952 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:17:42,953 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-24 19:17:42,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:42 BoogieIcfgContainer [2020-09-24 19:17:42,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:17:42,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:17:42,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:17:42,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:17:42,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:17:41" (1/3) ... [2020-09-24 19:17:42,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153894b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:42, skipping insertion in model container [2020-09-24 19:17:42,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:42" (2/3) ... [2020-09-24 19:17:42,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153894b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:42, skipping insertion in model container [2020-09-24 19:17:42,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:42" (3/3) ... [2020-09-24 19:17:42,972 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-09-24 19:17:42,983 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:17:42,994 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:17:43,017 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:17:43,048 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:17:43,048 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:17:43,048 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:17:43,048 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:17:43,048 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:17:43,048 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:17:43,049 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:17:43,049 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:17:43,074 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states. [2020-09-24 19:17:43,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 19:17:43,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:43,086 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] [2020-09-24 19:17:43,087 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:43,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:43,094 INFO L82 PathProgramCache]: Analyzing trace with hash -3412261, now seen corresponding path program 1 times [2020-09-24 19:17:43,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:43,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885593143] [2020-09-24 19:17:43,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:43,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:43,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:43,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:43,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:43,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 19:17:43,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:17:43,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-09-24 19:17:43,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:43,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:43,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 19:17:43,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:43,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 19:17:43,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:43,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:43,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:43,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:17:43,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:43,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:17:43,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:43,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:43,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 19:17:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:43,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:43,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:43,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:43,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 19:17:43,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:17:43,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 19:17:43,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:43,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:43,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 19:17:43,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:43,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:43,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 19:17:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:43,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:43,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:43,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:17:43,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:43,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:17:43,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:43,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:43,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 19:17:43,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:43,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:43,842 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 19:17:43,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885593143] [2020-09-24 19:17:43,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:43,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:17:43,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463063496] [2020-09-24 19:17:43,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:17:43,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:43,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:17:43,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:17:43,878 INFO L87 Difference]: Start difference. First operand 134 states. Second operand 4 states. [2020-09-24 19:17:44,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:44,338 INFO L93 Difference]: Finished difference Result 249 states and 287 transitions. [2020-09-24 19:17:44,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:17:44,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-09-24 19:17:44,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:44,355 INFO L225 Difference]: With dead ends: 249 [2020-09-24 19:17:44,356 INFO L226 Difference]: Without dead ends: 120 [2020-09-24 19:17:44,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 19:17:44,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-24 19:17:44,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-09-24 19:17:44,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-24 19:17:44,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2020-09-24 19:17:44,436 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 41 [2020-09-24 19:17:44,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:44,436 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2020-09-24 19:17:44,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:17:44,437 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2020-09-24 19:17:44,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 19:17:44,444 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:44,445 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 19:17:44,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:17:44,445 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:44,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:44,446 INFO L82 PathProgramCache]: Analyzing trace with hash 911495883, now seen corresponding path program 1 times [2020-09-24 19:17:44,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:44,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982170038] [2020-09-24 19:17:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:44,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:44,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:44,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 19:17:44,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:44,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-24 19:17:44,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:44,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:17:44,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-24 19:17:44,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 19:17:44,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:44,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:44,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:44,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:44,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:17:44,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:44,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:17:44,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:44,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:44,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:44,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 19:17:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:44,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:44,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:44,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 19:17:44,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:44,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 19:17:44,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:44,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:44,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:44,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:44,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:44,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 19:17:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:44,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:44,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:44,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 19:17:44,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:44,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 19:17:44,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:44,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:44,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:44,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:44,780 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 19:17:44,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982170038] [2020-09-24 19:17:44,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:44,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:17:44,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101073112] [2020-09-24 19:17:44,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:17:44,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:44,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:17:44,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:17:44,784 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand 5 states. [2020-09-24 19:17:45,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:45,048 INFO L93 Difference]: Finished difference Result 127 states and 130 transitions. [2020-09-24 19:17:45,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:17:45,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-09-24 19:17:45,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:45,052 INFO L225 Difference]: With dead ends: 127 [2020-09-24 19:17:45,052 INFO L226 Difference]: Without dead ends: 120 [2020-09-24 19:17:45,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:17:45,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-24 19:17:45,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-09-24 19:17:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-24 19:17:45,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 123 transitions. [2020-09-24 19:17:45,067 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 123 transitions. Word has length 57 [2020-09-24 19:17:45,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:45,070 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 123 transitions. [2020-09-24 19:17:45,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:17:45,070 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 123 transitions. [2020-09-24 19:17:45,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 19:17:45,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:45,073 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:17:45,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:17:45,074 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:45,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:45,074 INFO L82 PathProgramCache]: Analyzing trace with hash 376809565, now seen corresponding path program 1 times [2020-09-24 19:17:45,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:45,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192760253] [2020-09-24 19:17:45,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 19:17:45,110 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 19:17:45,110 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 19:17:45,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:17:45,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:17:45 BoogieIcfgContainer [2020-09-24 19:17:45,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:17:45,143 INFO L168 Benchmark]: Toolchain (without parser) took 3451.22 ms. Allocated memory was 138.9 MB in the beginning and 232.8 MB in the end (delta: 93.8 MB). Free memory was 102.1 MB in the beginning and 98.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:45,144 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 19:17:45,145 INFO L168 Benchmark]: CACSL2BoogieTranslator took 561.19 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 101.4 MB in the beginning and 178.6 MB in the end (delta: -77.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:45,146 INFO L168 Benchmark]: Boogie Preprocessor took 65.27 ms. Allocated memory is still 200.8 MB. Free memory was 178.6 MB in the beginning and 176.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:45,147 INFO L168 Benchmark]: RCFGBuilder took 639.50 ms. Allocated memory is still 200.8 MB. Free memory was 176.5 MB in the beginning and 144.6 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:45,148 INFO L168 Benchmark]: TraceAbstraction took 2175.22 ms. Allocated memory was 200.8 MB in the beginning and 232.8 MB in the end (delta: 32.0 MB). Free memory was 143.9 MB in the beginning and 98.1 MB in the end (delta: 45.8 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:45,152 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 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 561.19 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 101.4 MB in the beginning and 178.6 MB in the end (delta: -77.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.27 ms. Allocated memory is still 200.8 MB. Free memory was 178.6 MB in the beginning and 176.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 639.50 ms. Allocated memory is still 200.8 MB. Free memory was 176.5 MB in the beginning and 144.6 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2175.22 ms. Allocated memory was 200.8 MB in the beginning and 232.8 MB in the end (delta: 32.0 MB). Free memory was 143.9 MB in the beginning and 98.1 MB in the end (delta: 45.8 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 86]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 73, overapproximation of someBinaryArithmeticFLOAToperation at line 80, overapproximation of bitwiseAnd at line 26. Possible FailurePath: [L11] static const float one_modf = 1.0; [L80] float x = 0.0f / 0.0f; [L81] float iptr; [L82] CALL, EXPR modf_float(x, &iptr) [L14] __int32_t i0, j0; [L15] __uint32_t i; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] j0 = ((i0 >> 23) & 0xff) - 0x7f [L22] COND TRUE j0 < 23 [L23] COND TRUE j0 < 0 [L25] ieee_float_shape_type sf_u; [L26] sf_u.word = (i0 & 0x80000000) [L27] EXPR sf_u.value [L27] (*iptr) = sf_u.value [L29] return x; [L82] RET, EXPR modf_float(x, &iptr) [L82] float res = modf_float(x, &iptr); [L85] EXPR \read(iptr) [L85] CALL, EXPR isnan_float(iptr) [L73] return x != x; [L85] RET, EXPR isnan_float(iptr) [L85] isnan_float(iptr) && !isnan_float(res) [L85] CALL, EXPR isnan_float(res) [L73] return x != x; [L85] RET, EXPR isnan_float(res) [L85] isnan_float(iptr) && !isnan_float(res) [L85] COND TRUE isnan_float(iptr) && !isnan_float(res) [L86] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 134 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 253 SDtfs, 38 SDslu, 251 SDs, 0 SdLazy, 338 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 162 NumberOfCodeBlocks, 162 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 7096 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...