/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:28:08,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:28:08,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:28:08,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:28:08,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:28:08,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:28:08,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:28:08,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:28:08,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:28:08,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:28:08,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:28:08,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:28:08,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:28:08,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:28:08,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:28:08,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:28:08,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:28:08,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:28:08,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:28:08,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:28:08,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:28:08,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:28:08,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:28:08,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:28:08,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:28:08,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:28:08,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:28:08,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:28:08,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:28:08,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:28:08,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:28:08,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:28:08,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:28:08,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:28:08,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:28:08,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:28:08,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:28:08,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:28:08,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:28:08,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:28:08,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:28:08,512 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 14:28:08,560 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:28:08,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:28:08,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:28:08,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:28:08,563 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:28:08,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:28:08,564 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:28:08,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:28:08,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:28:08,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:28:08,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:28:08,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:28:08,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:28:08,567 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:28:08,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:28:08,567 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:28:08,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:28:08,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:28:08,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:28:08,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:28:08,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:28:08,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:28:08,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:28:08,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:28:08,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:28:08,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:28:08,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:28:08,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:28:08,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:28:08,570 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:28:09,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:28:09,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:28:09,098 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:28:09,100 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:28:09,101 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:28:09,102 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c [2020-09-25 14:28:09,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/471f81db2/289c9d42132c49db8cb838d9091f2be4/FLAGa82aae345 [2020-09-25 14:28:09,766 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:28:09,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1232b.c [2020-09-25 14:28:09,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/471f81db2/289c9d42132c49db8cb838d9091f2be4/FLAGa82aae345 [2020-09-25 14:28:10,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/471f81db2/289c9d42132c49db8cb838d9091f2be4 [2020-09-25 14:28:10,088 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:28:10,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:28:10,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:28:10,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:28:10,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:28:10,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:28:10" (1/1) ... [2020-09-25 14:28:10,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510a549d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10, skipping insertion in model container [2020-09-25 14:28:10,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:28:10" (1/1) ... [2020-09-25 14:28:10,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:28:10,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:28:10,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:28:10,384 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:28:10,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:28:10,442 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:28:10,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10 WrapperNode [2020-09-25 14:28:10,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:28:10,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:28:10,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:28:10,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:28:10,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10" (1/1) ... [2020-09-25 14:28:10,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10" (1/1) ... [2020-09-25 14:28:10,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10" (1/1) ... [2020-09-25 14:28:10,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10" (1/1) ... [2020-09-25 14:28:10,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10" (1/1) ... [2020-09-25 14:28:10,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10" (1/1) ... [2020-09-25 14:28:10,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10" (1/1) ... [2020-09-25 14:28:10,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:28:10,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:28:10,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:28:10,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:28:10,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10" (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 14:28:10,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:28:10,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:28:10,671 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 14:28:10,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-25 14:28:10,672 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2020-09-25 14:28:10,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-25 14:28:10,672 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:28:10,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:28:10,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-25 14:28:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 14:28:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-25 14:28:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 14:28:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 14:28:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:28:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:28:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2020-09-25 14:28:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-25 14:28:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:28:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:28:10,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:28:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:28:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 14:28:11,174 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:28:11,174 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 14:28:11,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:28:11 BoogieIcfgContainer [2020-09-25 14:28:11,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:28:11,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:28:11,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:28:11,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:28:11,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:28:10" (1/3) ... [2020-09-25 14:28:11,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b5906f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:28:11, skipping insertion in model container [2020-09-25 14:28:11,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10" (2/3) ... [2020-09-25 14:28:11,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b5906f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:28:11, skipping insertion in model container [2020-09-25 14:28:11,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:28:11" (3/3) ... [2020-09-25 14:28:11,200 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2020-09-25 14:28:11,212 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:28:11,222 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:28:11,243 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:28:11,274 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:28:11,274 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:28:11,274 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:28:11,274 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:28:11,274 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:28:11,274 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:28:11,275 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:28:11,275 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:28:11,298 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2020-09-25 14:28:11,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 14:28:11,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:11,309 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] [2020-09-25 14:28:11,309 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:11,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:11,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1987914920, now seen corresponding path program 1 times [2020-09-25 14:28:11,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:11,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055578907] [2020-09-25 14:28:11,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:11,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:11,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:11,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:11,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 14:28:11,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:11,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-09-25 14:28:11,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:11,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:11,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:28:11,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 14:28:11,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 14:28:11,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:28:12,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:12,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:12,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:12,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:28:12,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:12,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:28:12,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:12,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:12,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:12,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:12,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 14:28:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:12,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:12,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:12,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:12,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:28:12,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:12,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 14:28:12,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:12,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:28:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:28:12,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 14:28:12,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:12,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:28:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:12,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:12,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:12,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:12,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:28:12,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:28:12,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:28:12,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:12,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:28:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:28:12,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:12,213 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 14:28:12,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055578907] [2020-09-25 14:28:12,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:28:12,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:28:12,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931094906] [2020-09-25 14:28:12,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:28:12,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:12,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:28:12,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:28:12,247 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 6 states. [2020-09-25 14:28:12,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:12,679 INFO L93 Difference]: Finished difference Result 181 states and 211 transitions. [2020-09-25 14:28:12,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:28:12,681 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-25 14:28:12,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:12,697 INFO L225 Difference]: With dead ends: 181 [2020-09-25 14:28:12,697 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 14:28:12,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:28:12,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 14:28:12,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-09-25 14:28:12,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 14:28:12,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-25 14:28:12,767 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 35 [2020-09-25 14:28:12,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:12,768 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-25 14:28:12,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:28:12,768 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-25 14:28:12,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 14:28:12,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:12,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:12,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:28:12,773 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:12,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:12,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1091693362, now seen corresponding path program 1 times [2020-09-25 14:28:12,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:12,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798713747] [2020-09-25 14:28:12,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:12,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:13,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:13,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 14:28:13,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:13,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 14:28:13,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:13,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:28:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:28:13,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 14:28:13,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:13,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:28:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:13,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:13,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:13,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:28:13,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:13,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:28:13,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:13,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:28:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:28:13,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:13,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 14:28:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:13,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:13,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:13,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 14:28:13,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:13,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 14:28:13,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:13,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:13,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:28:13,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 14:28:13,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 14:28:13,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:13,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:28:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:13,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:13,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:13,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:28:13,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:13,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 14:28:13,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:13,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:13,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:28:13,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:28:13,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:28:13,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:28:13,431 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 14:28:13,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798713747] [2020-09-25 14:28:13,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:28:13,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:28:13,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388488539] [2020-09-25 14:28:13,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:28:13,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:28:13,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:28:13,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:28:13,438 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-09-25 14:28:13,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:28:13,780 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2020-09-25 14:28:13,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:28:13,783 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-25 14:28:13,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:28:13,785 INFO L225 Difference]: With dead ends: 127 [2020-09-25 14:28:13,786 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 14:28:13,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:28:13,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 14:28:13,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-09-25 14:28:13,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 14:28:13,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-25 14:28:13,803 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 52 [2020-09-25 14:28:13,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:28:13,804 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-25 14:28:13,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:28:13,804 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-25 14:28:13,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 14:28:13,806 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:13,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:13,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:28:13,807 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:13,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:13,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1804168050, now seen corresponding path program 1 times [2020-09-25 14:28:13,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:13,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316218829] [2020-09-25 14:28:13,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 14:28:13,833 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 14:28:13,833 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 14:28:13,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:28:13,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:28:13 BoogieIcfgContainer [2020-09-25 14:28:13,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:28:13,867 INFO L168 Benchmark]: Toolchain (without parser) took 3775.70 ms. Allocated memory was 141.0 MB in the beginning and 233.8 MB in the end (delta: 92.8 MB). Free memory was 102.8 MB in the beginning and 92.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 103.4 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:13,868 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 14:28:13,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.14 ms. Allocated memory is still 141.0 MB. Free memory was 102.2 MB in the beginning and 91.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:13,870 INFO L168 Benchmark]: Boogie Preprocessor took 140.92 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 91.1 MB in the beginning and 182.1 MB in the end (delta: -91.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:13,871 INFO L168 Benchmark]: RCFGBuilder took 601.88 ms. Allocated memory is still 204.5 MB. Free memory was 182.1 MB in the beginning and 156.4 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:13,873 INFO L168 Benchmark]: TraceAbstraction took 2674.70 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 156.4 MB in the beginning and 92.2 MB in the end (delta: 64.2 MB). Peak memory consumption was 93.6 MB. Max. memory is 7.1 GB. [2020-09-25 14:28:13,877 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 348.14 ms. Allocated memory is still 141.0 MB. Free memory was 102.2 MB in the beginning and 91.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 140.92 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 91.1 MB in the beginning and 182.1 MB in the end (delta: -91.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 601.88 ms. Allocated memory is still 204.5 MB. Free memory was 182.1 MB in the beginning and 156.4 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2674.70 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 156.4 MB in the beginning and 92.2 MB in the end (delta: 64.2 MB). Peak memory consumption was 93.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 74. Possible FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; [L76] CALL, EXPR fmin_double(x, y) [L46] CALL, EXPR __fpclassify_double(x) [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; [L46] RET, EXPR __fpclassify_double(x) [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; [L76] RET, EXPR fmin_double(x, y) [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 193 SDtfs, 40 SDslu, 470 SDs, 0 SdLazy, 282 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 7242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...