/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:16:52,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:16:52,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:16:52,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:16:52,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:16:52,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:16:52,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:16:52,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:16:52,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:16:52,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:16:52,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:16:52,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:16:52,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:16:52,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:16:52,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:16:52,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:16:52,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:16:52,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:16:52,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:16:52,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:16:52,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:16:52,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:16:52,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:16:52,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:16:52,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:16:52,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:16:52,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:16:52,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:16:52,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:16:52,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:16:52,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:16:52,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:16:52,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:16:52,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:16:52,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:16:52,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:16:52,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:16:52,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:16:52,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:16:52,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:16:52,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:16:52,440 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 [2020-09-25 04:16:52,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:16:52,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:16:52,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:16:52,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:16:52,488 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:16:52,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:16:52,489 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:16:52,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:16:52,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:16:52,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:16:52,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:16:52,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:16:52,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:16:52,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:16:52,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:16:52,491 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:16:52,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:16:52,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:16:52,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:16:52,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:16:52,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:16:52,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:16:52,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:16:52,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:16:52,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:16:52,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:16:52,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:16:52,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:16:52,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:16:52,493 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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:16:52,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:16:53,006 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:16:53,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:16:53,014 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:16:53,014 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:16:53,016 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-09-25 04:16:53,108 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67f41bf17/ca951e738678477598bd0317f5c9d33a/FLAG9a1003e79 [2020-09-25 04:16:53,683 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:16:53,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-09-25 04:16:53,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67f41bf17/ca951e738678477598bd0317f5c9d33a/FLAG9a1003e79 [2020-09-25 04:16:54,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67f41bf17/ca951e738678477598bd0317f5c9d33a [2020-09-25 04:16:54,022 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:16:54,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:16:54,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:16:54,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:16:54,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:16:54,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:16:54" (1/1) ... [2020-09-25 04:16:54,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2403f591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:54, skipping insertion in model container [2020-09-25 04:16:54,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:16:54" (1/1) ... [2020-09-25 04:16:54,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:16:54,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:16:54,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:16:54,365 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:16:54,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:16:54,512 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:16:54,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:54 WrapperNode [2020-09-25 04:16:54,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:16:54,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:16:54,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:16:54,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:16:54,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:54" (1/1) ... [2020-09-25 04:16:54,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:54" (1/1) ... [2020-09-25 04:16:54,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:54" (1/1) ... [2020-09-25 04:16:54,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:54" (1/1) ... [2020-09-25 04:16:54,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:54" (1/1) ... [2020-09-25 04:16:54,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:54" (1/1) ... [2020-09-25 04:16:54,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:54" (1/1) ... [2020-09-25 04:16:54,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:16:54,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:16:54,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:16:54,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:16:54,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:54" (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 [2020-09-25 04:16:54,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:16:54,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:16:54,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 04:16:54,647 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-09-25 04:16:54,648 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-09-25 04:16:54,648 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-09-25 04:16:54,648 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:16:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:16:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 04:16:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 04:16:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 04:16:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-09-25 04:16:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-09-25 04:16:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-09-25 04:16:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:16:54,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:16:54,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:16:55,219 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:16:55,220 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 04:16:55,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:16:55 BoogieIcfgContainer [2020-09-25 04:16:55,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:16:55,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:16:55,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:16:55,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:16:55,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:16:54" (1/3) ... [2020-09-25 04:16:55,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377a5bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:16:55, skipping insertion in model container [2020-09-25 04:16:55,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:16:54" (2/3) ... [2020-09-25 04:16:55,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377a5bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:16:55, skipping insertion in model container [2020-09-25 04:16:55,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:16:55" (3/3) ... [2020-09-25 04:16:55,236 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-09-25 04:16:55,247 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:16:55,257 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:16:55,280 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:16:55,308 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:16:55,308 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:16:55,309 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:16:55,309 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:16:55,309 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:16:55,309 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:16:55,309 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:16:55,309 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:16:55,333 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-09-25 04:16:55,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 04:16:55,345 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:16:55,346 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:16:55,346 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:16:55,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:16:55,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1377121462, now seen corresponding path program 1 times [2020-09-25 04:16:55,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:16:55,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136616640] [2020-09-25 04:16:55,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:16:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:55,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:55,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:58,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:58,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:58,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 04:16:58,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:16:58,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2927 [2020-09-25 04:16:58,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:58,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:58,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:16:58,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 04:16:58,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 04:16:58,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:16:58,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:16:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:58,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:58,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:58,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:16:58,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:58,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:16:58,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:58,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:58,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:16:58,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:16:58,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:16:58,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:58,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 04:16:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:58,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:58,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:58,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:16:58,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:58,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:16:58,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:58,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:58,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:16:58,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:16:58,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:16:58,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:58,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 04:16:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:58,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:58,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:58,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:16:58,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:58,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:16:58,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:58,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:58,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:16:58,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:16:58,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:16:58,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:58,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:16:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:58,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:58,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:16:58,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:16:58,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:16:58,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:16:58,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:16:58,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:16:58,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:16:58,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:16:58,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 04:16:58,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:16:58,856 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 04:16:58,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136616640] [2020-09-25 04:16:58,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:16:58,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:16:58,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518550112] [2020-09-25 04:16:58,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:16:58,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:16:58,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:16:58,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:16:58,891 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 9 states. [2020-09-25 04:16:59,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:16:59,191 INFO L93 Difference]: Finished difference Result 298 states and 378 transitions. [2020-09-25 04:16:59,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:16:59,193 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 81 [2020-09-25 04:16:59,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:16:59,229 INFO L225 Difference]: With dead ends: 298 [2020-09-25 04:16:59,229 INFO L226 Difference]: Without dead ends: 189 [2020-09-25 04:16:59,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-25 04:16:59,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-25 04:16:59,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 167. [2020-09-25 04:16:59,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-25 04:16:59,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 197 transitions. [2020-09-25 04:16:59,372 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 197 transitions. Word has length 81 [2020-09-25 04:16:59,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:16:59,374 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 197 transitions. [2020-09-25 04:16:59,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:16:59,380 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 197 transitions. [2020-09-25 04:16:59,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 04:16:59,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:16:59,392 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:16:59,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:16:59,393 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:16:59,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:16:59,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1623188401, now seen corresponding path program 1 times [2020-09-25 04:16:59,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:16:59,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071795973] [2020-09-25 04:16:59,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:16:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:16:59,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:16:59,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:01,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:01,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:01,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 04:17:01,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:17:01,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2427 [2020-09-25 04:17:01,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:01,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:01,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:01,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 04:17:01,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:17:01,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:01,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:01,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:01,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:01,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:01,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:01,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:01,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:01,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:01,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:01,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:17:01,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 04:17:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:01,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:01,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:01,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:17:01,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:01,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:17:01,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:01,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:01,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:01,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:01,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:01,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:17:01,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 04:17:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:01,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:02,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:02,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:17:02,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:02,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:17:02,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:02,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:02,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:02,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:02,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:02,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:02,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:17:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:02,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:02,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:02,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:17:02,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:02,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:17:02,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:02,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:17:02,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:02,074 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 04:17:02,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071795973] [2020-09-25 04:17:02,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:17:02,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:17:02,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129090751] [2020-09-25 04:17:02,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:17:02,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:02,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:17:02,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:17:02,079 INFO L87 Difference]: Start difference. First operand 167 states and 197 transitions. Second operand 8 states. [2020-09-25 04:17:02,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:02,238 INFO L93 Difference]: Finished difference Result 306 states and 359 transitions. [2020-09-25 04:17:02,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:17:02,240 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-09-25 04:17:02,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:02,244 INFO L225 Difference]: With dead ends: 306 [2020-09-25 04:17:02,244 INFO L226 Difference]: Without dead ends: 217 [2020-09-25 04:17:02,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:17:02,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-09-25 04:17:02,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 186. [2020-09-25 04:17:02,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-09-25 04:17:02,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 216 transitions. [2020-09-25 04:17:02,267 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 216 transitions. Word has length 84 [2020-09-25 04:17:02,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:02,268 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 216 transitions. [2020-09-25 04:17:02,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:17:02,268 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 216 transitions. [2020-09-25 04:17:02,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 04:17:02,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:02,272 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:02,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:17:02,272 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:02,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:02,273 INFO L82 PathProgramCache]: Analyzing trace with hash 808883757, now seen corresponding path program 1 times [2020-09-25 04:17:02,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:02,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911620183] [2020-09-25 04:17:02,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:02,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:02,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:03,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:03,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 04:17:03,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:17:03,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1256 [2020-09-25 04:17:03,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:03,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:03,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:17:03,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 04:17:03,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:17:03,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:03,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:03,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:03,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:03,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:03,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:03,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:03,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:03,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:03,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:03,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 04:17:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:03,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:03,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:03,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:17:03,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:03,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:03,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:03,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:03,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:03,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:03,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:03,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:03,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 04:17:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:03,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:03,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:03,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:17:03,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:03,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:17:03,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:03,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:03,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:03,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:17:03,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:03,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:17:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:03,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:03,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:03,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:17:03,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:03,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 04:17:03,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:03,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:17:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:17:03,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 04:17:03,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911620183] [2020-09-25 04:17:03,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:03,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 04:17:03,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613512504] [2020-09-25 04:17:03,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 04:17:03,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:03,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 04:17:03,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:17:03,716 INFO L87 Difference]: Start difference. First operand 186 states and 216 transitions. Second operand 10 states. [2020-09-25 04:17:03,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:03,919 INFO L93 Difference]: Finished difference Result 283 states and 325 transitions. [2020-09-25 04:17:03,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:17:03,920 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-09-25 04:17:03,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:03,922 INFO L225 Difference]: With dead ends: 283 [2020-09-25 04:17:03,923 INFO L226 Difference]: Without dead ends: 199 [2020-09-25 04:17:03,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:17:03,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-25 04:17:03,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 163. [2020-09-25 04:17:03,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-09-25 04:17:03,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 186 transitions. [2020-09-25 04:17:03,938 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 186 transitions. Word has length 88 [2020-09-25 04:17:03,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:03,939 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 186 transitions. [2020-09-25 04:17:03,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 04:17:03,939 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 186 transitions. [2020-09-25 04:17:03,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 04:17:03,941 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:03,942 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1] [2020-09-25 04:17:03,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:17:03,942 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:03,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:03,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1795206334, now seen corresponding path program 1 times [2020-09-25 04:17:03,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:03,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924022073] [2020-09-25 04:17:03,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:03,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:04,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:04,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 04:17:04,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:04,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-09-25 04:17:04,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:04,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 04:17:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 04:17:04,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 04:17:04,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:05,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:05,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:05,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:05,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:05,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:05,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:17:05,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:05,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:05,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:05,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:05,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:05,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:05,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 04:17:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:05,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:05,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:05,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:17:05,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:05,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:05,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:05,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:05,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:05,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:05,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:05,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:05,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 04:17:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:05,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:05,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:05,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:17:05,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:05,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 04:17:05,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:05,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:05,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:05,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:05,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:17:05,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:05,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 04:17:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:05,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:05,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:05,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:17:05,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:05,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 04:17:05,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:05,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:05,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:17:05,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:05,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:17:05,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:05,260 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 04:17:05,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924022073] [2020-09-25 04:17:05,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:17:05,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-25 04:17:05,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236396492] [2020-09-25 04:17:05,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 04:17:05,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:05,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 04:17:05,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:17:05,263 INFO L87 Difference]: Start difference. First operand 163 states and 186 transitions. Second operand 15 states. [2020-09-25 04:17:05,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:05,838 INFO L93 Difference]: Finished difference Result 302 states and 358 transitions. [2020-09-25 04:17:05,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 04:17:05,838 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-09-25 04:17:05,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:05,841 INFO L225 Difference]: With dead ends: 302 [2020-09-25 04:17:05,841 INFO L226 Difference]: Without dead ends: 243 [2020-09-25 04:17:05,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2020-09-25 04:17:05,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-09-25 04:17:05,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 216. [2020-09-25 04:17:05,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-25 04:17:05,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 251 transitions. [2020-09-25 04:17:05,859 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 251 transitions. Word has length 89 [2020-09-25 04:17:05,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:05,860 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 251 transitions. [2020-09-25 04:17:05,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 04:17:05,860 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 251 transitions. [2020-09-25 04:17:05,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 04:17:05,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:05,863 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:05,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:17:05,863 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:05,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:05,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1839352304, now seen corresponding path program 1 times [2020-09-25 04:17:05,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:05,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858675839] [2020-09-25 04:17:05,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 04:17:05,889 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 04:17:05,890 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 04:17:05,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:17:05,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:17:05 BoogieIcfgContainer [2020-09-25 04:17:05,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:17:05,928 INFO L168 Benchmark]: Toolchain (without parser) took 11902.48 ms. Allocated memory was 138.9 MB in the beginning and 307.8 MB in the end (delta: 168.8 MB). Free memory was 102.0 MB in the beginning and 118.7 MB in the end (delta: -16.7 MB). Peak memory consumption was 152.1 MB. Max. memory is 7.1 GB. [2020-09-25 04:17:05,929 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 04:17:05,930 INFO L168 Benchmark]: CACSL2BoogieTranslator took 483.30 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 180.6 MB in the end (delta: -79.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-09-25 04:17:05,931 INFO L168 Benchmark]: Boogie Preprocessor took 52.18 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 178.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-25 04:17:05,931 INFO L168 Benchmark]: RCFGBuilder took 659.40 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 146.5 MB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2020-09-25 04:17:05,932 INFO L168 Benchmark]: TraceAbstraction took 10696.13 ms. Allocated memory was 201.9 MB in the beginning and 307.8 MB in the end (delta: 105.9 MB). Free memory was 145.8 MB in the beginning and 118.7 MB in the end (delta: 27.1 MB). Peak memory consumption was 133.0 MB. Max. memory is 7.1 GB. [2020-09-25 04:17:05,936 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 483.30 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 180.6 MB in the end (delta: -79.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.18 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 178.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 659.40 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 146.5 MB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10696.13 ms. Allocated memory was 201.9 MB in the beginning and 307.8 MB in the end (delta: 105.9 MB). Free memory was 145.8 MB in the beginning and 118.7 MB in the end (delta: 27.1 MB). Peak memory consumption was 133.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 103, overapproximation of bitwiseAnd at line 101. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L231] CALL, EXPR base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] RET, EXPR base2flt(0, 0) [L231] zero = base2flt(0, 0) [L232] CALL, EXPR base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND TRUE m >= 1U << 25U [L54] COND TRUE e >= 127 [L55] __retres4 = 4294967295U [L70] return (__retres4); [L232] RET, EXPR base2flt(ma, ea) [L232] a = base2flt(ma, ea) [L233] CALL, EXPR base2flt(mb, eb) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] RET, EXPR base2flt(mb, eb) [L233] b = base2flt(mb, eb) [L234] CALL addflt(a, b) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND FALSE !(a < b) [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L104] CALL __VERIFIER_assert(ea >= eb) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 169 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.5s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 608 SDtfs, 331 SDslu, 5156 SDs, 0 SdLazy, 539 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=4, 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, 4 MinimizatonAttempts, 116 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 432 NumberOfCodeBlocks, 432 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 338 ConstructedInterpolants, 0 QuantifiedInterpolants, 75204 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 102/108 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...