/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=0.6 --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_1230.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:33:51,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:33:51,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:33:51,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:33:51,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:33:51,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:33:51,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:33:51,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:33:51,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:33:51,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:33:51,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:33:51,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:33:51,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:33:51,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:33:51,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:33:51,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:33:51,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:33:51,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:33:51,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:33:51,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:33:51,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:33:51,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:33:51,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:33:51,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:33:51,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:33:51,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:33:51,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:33:51,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:33:51,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:33:51,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:33:51,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:33:51,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:33:51,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:33:51,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:33:51,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:33:51,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:33:51,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:33:51,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:33:51,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:33:51,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:33:51,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:33:51,643 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 06:33:51,707 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:33:51,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:33:51,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:33:51,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:33:51,712 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:33:51,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:33:51,715 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:33:51,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:33:51,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:33:51,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:33:51,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:33:51,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:33:51,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:33:51,716 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:33:51,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:33:51,716 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:33:51,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:33:51,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:33:51,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:33:51,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:33:51,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:33:51,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:33:51,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:33:51,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:33:51,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:33:51,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:33:51,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:33:51,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:33:51,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:33:51,721 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:33:52,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:33:52,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:33:52,241 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:33:52,243 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:33:52,243 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:33:52,245 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2020-09-25 06:33:52,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d85e08a53/0f86e4fa2b784b8bbf528996806c819e/FLAGe2df5cbe6 [2020-09-25 06:33:52,879 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:33:52,880 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1230.c [2020-09-25 06:33:52,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d85e08a53/0f86e4fa2b784b8bbf528996806c819e/FLAGe2df5cbe6 [2020-09-25 06:33:53,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d85e08a53/0f86e4fa2b784b8bbf528996806c819e [2020-09-25 06:33:53,239 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:33:53,245 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:33:53,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:33:53,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:33:53,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:33:53,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:33:53" (1/1) ... [2020-09-25 06:33:53,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693e2903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:53, skipping insertion in model container [2020-09-25 06:33:53,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:33:53" (1/1) ... [2020-09-25 06:33:53,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:33:53,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:33:53,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:33:53,544 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:33:53,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:33:53,601 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:33:53,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:53 WrapperNode [2020-09-25 06:33:53,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:33:53,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:33:53,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:33:53,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:33:53,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:53" (1/1) ... [2020-09-25 06:33:53,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:53" (1/1) ... [2020-09-25 06:33:53,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:53" (1/1) ... [2020-09-25 06:33:53,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:53" (1/1) ... [2020-09-25 06:33:53,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:53" (1/1) ... [2020-09-25 06:33:53,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:53" (1/1) ... [2020-09-25 06:33:53,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:53" (1/1) ... [2020-09-25 06:33:53,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:33:53,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:33:53,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:33:53,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:33:53,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:53" (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 06:33:53,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:33:53,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:33:53,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-09-25 06:33:53,840 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-09-25 06:33:53,840 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-09-25 06:33:53,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:33:53,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:33:53,841 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-09-25 06:33:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 06:33:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 06:33:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 06:33:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 06:33:53,842 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-09-25 06:33:53,843 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-09-25 06:33:53,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:33:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:33:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:33:53,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 06:33:53,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 06:33:54,240 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:33:54,240 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 06:33:54,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:33:54 BoogieIcfgContainer [2020-09-25 06:33:54,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:33:54,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:33:54,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:33:54,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:33:54,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:33:53" (1/3) ... [2020-09-25 06:33:54,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4490266c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:33:54, skipping insertion in model container [2020-09-25 06:33:54,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:33:53" (2/3) ... [2020-09-25 06:33:54,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4490266c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:33:54, skipping insertion in model container [2020-09-25 06:33:54,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:33:54" (3/3) ... [2020-09-25 06:33:54,256 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2020-09-25 06:33:54,266 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:33:54,276 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:33:54,298 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:33:54,327 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:33:54,327 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:33:54,327 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:33:54,328 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:33:54,328 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:33:54,328 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:33:54,328 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:33:54,328 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:33:54,351 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-09-25 06:33:54,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 06:33:54,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:33:54,362 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] [2020-09-25 06:33:54,362 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:33:54,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:33:54,370 INFO L82 PathProgramCache]: Analyzing trace with hash 337584138, now seen corresponding path program 1 times [2020-09-25 06:33:54,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:33:54,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46443399] [2020-09-25 06:33:54,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:33:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:54,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:54,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:54,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:54,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 06:33:54,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:33:54,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-09-25 06:33:54,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:54,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:54,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:54,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 06:33:54,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:54,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 06:33:54,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:33:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:54,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:54,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:54,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:33:54,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:54,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:33:54,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:54,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:33:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:54,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:55,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 06:33:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:55,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:55,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:55,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:55,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:33:55,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:33:55,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 06:33:55,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:55,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 06:33:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:55,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:55,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:33:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:55,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:55,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:55,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:33:55,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:55,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:33:55,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:55,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:55,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 06:33:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:55,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:55,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:33:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:55,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:55,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:55,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:33:55,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:55,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:33:55,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:55,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:55,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:55,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:33:55,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:55,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:33:55,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46443399] [2020-09-25 06:33:55,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:33:55,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:33:55,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709606638] [2020-09-25 06:33:55,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:33:55,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:33:55,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:33:55,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:33:55,138 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-09-25 06:33:55,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:33:55,459 INFO L93 Difference]: Finished difference Result 132 states and 153 transitions. [2020-09-25 06:33:55,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 06:33:55,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-09-25 06:33:55,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:33:55,480 INFO L225 Difference]: With dead ends: 132 [2020-09-25 06:33:55,480 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 06:33:55,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:33:55,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 06:33:55,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-25 06:33:55,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 06:33:55,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-09-25 06:33:55,593 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 37 [2020-09-25 06:33:55,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:33:55,597 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-09-25 06:33:55,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:33:55,597 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-09-25 06:33:55,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 06:33:55,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:33:55,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:33:55,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:33:55,605 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:33:55,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:33:55,619 INFO L82 PathProgramCache]: Analyzing trace with hash -356550436, now seen corresponding path program 1 times [2020-09-25 06:33:55,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:33:55,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264255127] [2020-09-25 06:33:55,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:33:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:55,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:55,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:55,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 06:33:55,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:55,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-25 06:33:55,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:55,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:55,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:55,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 06:33:55,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:33:55,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:55,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:33:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:55,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:55,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:55,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:33:55,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:55,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:33:55,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:55,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:55,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:55,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:33:55,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:55,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:55,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 06:33:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:55,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:56,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:56,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:33:56,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:56,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 06:33:56,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:56,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:56,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:56,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 06:33:56,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:33:56,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:56,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:33:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:56,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:56,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:56,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 06:33:56,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:56,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 06:33:56,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:56,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:56,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:56,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:33:56,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:33:56,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:56,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 06:33:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:56,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:56,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:56,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:33:56,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:56,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:33:56,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:56,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:56,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:56,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:33:56,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:56,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:56,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:33:56,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264255127] [2020-09-25 06:33:56,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:33:56,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:33:56,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139987702] [2020-09-25 06:33:56,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:33:56,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:33:56,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:33:56,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:33:56,209 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 6 states. [2020-09-25 06:33:56,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:33:56,406 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-09-25 06:33:56,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:33:56,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-09-25 06:33:56,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:33:56,411 INFO L225 Difference]: With dead ends: 87 [2020-09-25 06:33:56,411 INFO L226 Difference]: Without dead ends: 71 [2020-09-25 06:33:56,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:33:56,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-25 06:33:56,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-09-25 06:33:56,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 06:33:56,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-25 06:33:56,428 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 46 [2020-09-25 06:33:56,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:33:56,429 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-25 06:33:56,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:33:56,429 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-25 06:33:56,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 06:33:56,431 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:33:56,431 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] [2020-09-25 06:33:56,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:33:56,432 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:33:56,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:33:56,432 INFO L82 PathProgramCache]: Analyzing trace with hash 9988108, now seen corresponding path program 1 times [2020-09-25 06:33:56,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:33:56,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302030977] [2020-09-25 06:33:56,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:33:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:56,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:56,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:56,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 06:33:56,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:56,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 06:33:56,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:56,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:56,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:56,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 06:33:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:33:56,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:56,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:33:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:56,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:56,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:56,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:33:56,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:56,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:33:56,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:56,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:33:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:56,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:56,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 06:33:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:56,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:56,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:56,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:33:56,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:56,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 06:33:56,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:56,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 06:33:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:33:56,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:56,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:33:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:56,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:56,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:56,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 06:33:56,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:56,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 06:33:56,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:56,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:56,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:56,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:33:56,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 06:33:56,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:56,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 06:33:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:56,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:56,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:56,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:33:56,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:56,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:33:56,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:56,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:33:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:56,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:56,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:33:56,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302030977] [2020-09-25 06:33:56,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:33:56,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:33:56,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492074653] [2020-09-25 06:33:56,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:33:56,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:33:56,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:33:56,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:33:56,824 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-09-25 06:33:57,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:33:57,035 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-09-25 06:33:57,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:33:57,035 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-09-25 06:33:57,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:33:57,037 INFO L225 Difference]: With dead ends: 91 [2020-09-25 06:33:57,037 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 06:33:57,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:33:57,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 06:33:57,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2020-09-25 06:33:57,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 06:33:57,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-25 06:33:57,048 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 47 [2020-09-25 06:33:57,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:33:57,049 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-25 06:33:57,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:33:57,049 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-25 06:33:57,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 06:33:57,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:33:57,051 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] [2020-09-25 06:33:57,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:33:57,051 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:33:57,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:33:57,052 INFO L82 PathProgramCache]: Analyzing trace with hash 738627255, now seen corresponding path program 1 times [2020-09-25 06:33:57,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:33:57,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399159827] [2020-09-25 06:33:57,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:33:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:57,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:57,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:57,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 06:33:57,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:57,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 06:33:57,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:57,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:57,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:33:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:33:57,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:57,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:33:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:57,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:57,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:57,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:33:57,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:57,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:33:57,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:57,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:57,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:57,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:33:57,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:57,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:57,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 06:33:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:57,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:57,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:57,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 06:33:57,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:57,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 06:33:57,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:57,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:57,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:57,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:33:57,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:33:57,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:33:57,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:33:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:57,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:57,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:57,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:33:57,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:57,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 06:33:57,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:57,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:57,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:57,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:33:57,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:33:57,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:57,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 06:33:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:57,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:57,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:57,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:33:57,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:57,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:33:57,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:57,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:57,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:33:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:57,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:57,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:33:57,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399159827] [2020-09-25 06:33:57,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:33:57,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:33:57,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519307510] [2020-09-25 06:33:57,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:33:57,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:33:57,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:33:57,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:33:57,508 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-09-25 06:33:57,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:33:57,741 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-09-25 06:33:57,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:33:57,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-09-25 06:33:57,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:33:57,745 INFO L225 Difference]: With dead ends: 95 [2020-09-25 06:33:57,745 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 06:33:57,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:33:57,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 06:33:57,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2020-09-25 06:33:57,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 06:33:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-25 06:33:57,767 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 48 [2020-09-25 06:33:57,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:33:57,768 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-25 06:33:57,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:33:57,768 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-25 06:33:57,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 06:33:57,769 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:33:57,770 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] [2020-09-25 06:33:57,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:33:57,773 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:33:57,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:33:57,773 INFO L82 PathProgramCache]: Analyzing trace with hash -192516793, now seen corresponding path program 1 times [2020-09-25 06:33:57,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:33:57,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480652415] [2020-09-25 06:33:57,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:33:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:57,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:57,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:57,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 06:33:57,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:57,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 06:33:57,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:57,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:57,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:57,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:33:57,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:33:57,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:57,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:33:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:57,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:57,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:57,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:33:57,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:57,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:33:57,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:57,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:57,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:57,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:33:57,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:57,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:57,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 06:33:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:57,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:58,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:58,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:33:58,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:58,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 06:33:58,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:58,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:58,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:58,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 06:33:58,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:33:58,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:58,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:33:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:58,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:58,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:58,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:33:58,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:58,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 06:33:58,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:58,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:58,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:33:58,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:33:58,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:33:58,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:58,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 06:33:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:33:58,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:33:58,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:33:58,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:33:58,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:33:58,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:33:58,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:33:58,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:33:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:33:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:33:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:33:58,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:33:58,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:33:58,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480652415] [2020-09-25 06:33:58,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:33:58,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:33:58,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662404947] [2020-09-25 06:33:58,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:33:58,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:33:58,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:33:58,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:33:58,192 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 6 states. [2020-09-25 06:33:58,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:33:58,388 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-09-25 06:33:58,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:33:58,389 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-25 06:33:58,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:33:58,390 INFO L225 Difference]: With dead ends: 91 [2020-09-25 06:33:58,390 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 06:33:58,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:33:58,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 06:33:58,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2020-09-25 06:33:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 06:33:58,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-25 06:33:58,399 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 49 [2020-09-25 06:33:58,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:33:58,400 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-25 06:33:58,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:33:58,400 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-25 06:33:58,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 06:33:58,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:33:58,401 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] [2020-09-25 06:33:58,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:33:58,402 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:33:58,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:33:58,402 INFO L82 PathProgramCache]: Analyzing trace with hash -587463417, now seen corresponding path program 1 times [2020-09-25 06:33:58,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:33:58,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641640581] [2020-09-25 06:33:58,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:33:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 06:33:58,420 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 06:33:58,420 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 06:33:58,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:33:58,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:33:58 BoogieIcfgContainer [2020-09-25 06:33:58,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 06:33:58,451 INFO L168 Benchmark]: Toolchain (without parser) took 5208.83 ms. Allocated memory was 146.3 MB in the beginning and 246.9 MB in the end (delta: 100.7 MB). Free memory was 102.5 MB in the beginning and 172.0 MB in the end (delta: -69.5 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. [2020-09-25 06:33:58,452 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 06:33:58,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.05 ms. Allocated memory is still 146.3 MB. Free memory was 101.9 MB in the beginning and 91.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-25 06:33:58,454 INFO L168 Benchmark]: Boogie Preprocessor took 156.35 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 91.3 MB in the beginning and 179.7 MB in the end (delta: -88.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-25 06:33:58,455 INFO L168 Benchmark]: RCFGBuilder took 487.39 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 158.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-09-25 06:33:58,456 INFO L168 Benchmark]: TraceAbstraction took 4199.80 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 158.0 MB in the beginning and 172.0 MB in the end (delta: -14.0 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. [2020-09-25 06:33:58,460 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 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 353.05 ms. Allocated memory is still 146.3 MB. Free memory was 101.9 MB in the beginning and 91.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.35 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 91.3 MB in the beginning and 179.7 MB in the end (delta: -88.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 487.39 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 158.7 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4199.80 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 158.0 MB in the beginning and 172.0 MB in the end (delta: -14.0 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 55. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] float y = 0.0f / 0.0f; [L56] CALL, EXPR fmin_float(x, y) [L35] CALL, EXPR __fpclassify_float(x) [L12] __uint32_t w; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L20] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L22-L23] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L25-L26] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L28] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L31] return 0; [L35] RET, EXPR __fpclassify_float(x) [L35] COND TRUE __fpclassify_float(x) == 0 [L36] return y; [L56] RET, EXPR fmin_float(x, y) [L56] float res = fmin_float(x, y); [L58] CALL, EXPR isnan_float(res) [L44] return x != x; [L58] RET, EXPR isnan_float(res) [L58] COND TRUE !isnan_float(res) [L59] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 371 SDtfs, 99 SDslu, 729 SDs, 0 SdLazy, 515 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 276 NumberOfCodeBlocks, 276 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 19508 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...