/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:20:38,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:20:38,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:20:38,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:20:38,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:20:38,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:20:38,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:20:38,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:20:38,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:20:38,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:20:38,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:20:38,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:20:38,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:20:38,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:20:38,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:20:38,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:20:38,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:20:38,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:20:38,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:20:38,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:20:38,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:20:38,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:20:38,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:20:38,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:20:38,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:20:38,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:20:38,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:20:38,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:20:38,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:20:38,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:20:38,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:20:38,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:20:38,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:20:38,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:20:38,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:20:38,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:20:38,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:20:38,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:20:38,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:20:38,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:20:38,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:20:38,520 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 [2020-09-21 12:20:38,566 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:20:38,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:20:38,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:20:38,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:20:38,569 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:20:38,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:20:38,570 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:20:38,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:20:38,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:20:38,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:20:38,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:20:38,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:20:38,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:20:38,572 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:20:38,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:20:38,573 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:20:38,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:20:38,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:20:38,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:20:38,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:20:38,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:20:38,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:20:38,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:20:38,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:20:38,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:20:38,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:20:38,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:20:38,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:20:38,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:20:38,576 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:20:39,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:20:39,082 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:20:39,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:20:39,087 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:20:39,088 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:20:39,089 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-09-21 12:20:39,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6790c163/6de74f7cbb5345358fe805ed072f4432/FLAG85e0e5bb5 [2020-09-21 12:20:39,730 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:20:39,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-09-21 12:20:39,739 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6790c163/6de74f7cbb5345358fe805ed072f4432/FLAG85e0e5bb5 [2020-09-21 12:20:40,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6790c163/6de74f7cbb5345358fe805ed072f4432 [2020-09-21 12:20:40,086 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:20:40,092 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:20:40,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:40,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:20:40,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:20:40,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:40" (1/1) ... [2020-09-21 12:20:40,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651f0a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:40, skipping insertion in model container [2020-09-21 12:20:40,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:20:40" (1/1) ... [2020-09-21 12:20:40,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:20:40,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:20:40,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:40,419 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:20:40,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:20:40,580 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:20:40,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:40 WrapperNode [2020-09-21 12:20:40,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:20:40,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:20:40,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:20:40,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:20:40,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:40" (1/1) ... [2020-09-21 12:20:40,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:40" (1/1) ... [2020-09-21 12:20:40,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:40" (1/1) ... [2020-09-21 12:20:40,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:40" (1/1) ... [2020-09-21 12:20:40,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:40" (1/1) ... [2020-09-21 12:20:40,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:40" (1/1) ... [2020-09-21 12:20:40,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:40" (1/1) ... [2020-09-21 12:20:40,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:20:40,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:20:40,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:20:40,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:20:40,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:40" (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 [2020-09-21 12:20:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:20:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:20:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-21 12:20:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_double [2020-09-21 12:20:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:20:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:20:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-21 12:20:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure modf_double [2020-09-21 12:20:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:20:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 12:20:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:20:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:20:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:20:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 12:20:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:20:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:20:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:20:41,287 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:20:41,288 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-09-21 12:20:41,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:20:41 BoogieIcfgContainer [2020-09-21 12:20:41,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:20:41,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:20:41,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:20:41,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:20:41,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:20:40" (1/3) ... [2020-09-21 12:20:41,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c223c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:20:41, skipping insertion in model container [2020-09-21 12:20:41,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:20:40" (2/3) ... [2020-09-21 12:20:41,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c223c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:20:41, skipping insertion in model container [2020-09-21 12:20:41,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:20:41" (3/3) ... [2020-09-21 12:20:41,309 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-09-21 12:20:41,319 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:20:41,331 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:20:41,352 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:20:41,381 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:20:41,381 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:20:41,381 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:20:41,382 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:20:41,382 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:20:41,382 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:20:41,382 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:20:41,382 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:20:41,407 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-09-21 12:20:41,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 12:20:41,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:41,418 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] [2020-09-21 12:20:41,419 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:41,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:41,426 INFO L82 PathProgramCache]: Analyzing trace with hash 204549601, now seen corresponding path program 1 times [2020-09-21 12:20:41,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:41,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917715002] [2020-09-21 12:20:41,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:41,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:41,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:41,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:41,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:41,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 12:20:41,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:20:41,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-09-21 12:20:41,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:41,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:41,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:20:41,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:41,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:20:41,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:20:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:41,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:41,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:41,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:20:41,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:41,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:20:41,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:41,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:41,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:41,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:41,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:42,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:20:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:42,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:42,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:42,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:42,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:20:42,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:20:42,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 12:20:42,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:42,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:42,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:20:42,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:42,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:20:42,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-21 12:20:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:42,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:42,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:42,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:20:42,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:42,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:20:42,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:42,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:42,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:20:42,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:42,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:42,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:20:42,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917715002] [2020-09-21 12:20:42,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:20:42,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:20:42,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798942730] [2020-09-21 12:20:42,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:20:42,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:20:42,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:20:42,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:20:42,103 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-09-21 12:20:42,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:20:42,444 INFO L93 Difference]: Finished difference Result 108 states and 162 transitions. [2020-09-21 12:20:42,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:20:42,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-21 12:20:42,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:20:42,461 INFO L225 Difference]: With dead ends: 108 [2020-09-21 12:20:42,461 INFO L226 Difference]: Without dead ends: 54 [2020-09-21 12:20:42,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:20:42,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-21 12:20:42,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-21 12:20:42,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-21 12:20:42,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-09-21 12:20:42,557 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 25 [2020-09-21 12:20:42,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:20:42,557 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-09-21 12:20:42,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:20:42,558 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-09-21 12:20:42,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 12:20:42,561 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:42,561 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] [2020-09-21 12:20:42,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:20:42,562 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:42,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:42,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1987482264, now seen corresponding path program 1 times [2020-09-21 12:20:42,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:42,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036106139] [2020-09-21 12:20:42,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:42,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:42,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:42,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 12:20:42,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:42,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-21 12:20:42,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:42,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:20:42,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-21 12:20:42,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:20:42,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:42,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:20:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:42,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:42,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:42,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:20:42,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:42,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:20:42,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:42,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:42,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:42,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:42,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:20:42,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:20:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:42,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:43,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:43,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:20:43,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:43,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:20:43,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:43,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:43,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:43,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:43,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:20:43,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:20:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:20:43,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:20:43,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:20:43,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:20:43,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:20:43,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:20:43,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:20:43,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:20:43,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:20:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:20:43,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:20:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:20:43,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036106139] [2020-09-21 12:20:43,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:20:43,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:20:43,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313706423] [2020-09-21 12:20:43,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:20:43,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:20:43,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:20:43,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:20:43,047 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 5 states. [2020-09-21 12:20:43,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:20:43,277 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-09-21 12:20:43,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:20:43,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-21 12:20:43,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:20:43,280 INFO L225 Difference]: With dead ends: 57 [2020-09-21 12:20:43,280 INFO L226 Difference]: Without dead ends: 54 [2020-09-21 12:20:43,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:20:43,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-21 12:20:43,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-21 12:20:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-21 12:20:43,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-09-21 12:20:43,291 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 27 [2020-09-21 12:20:43,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:20:43,294 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-09-21 12:20:43,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:20:43,294 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-09-21 12:20:43,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-21 12:20:43,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:20:43,296 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:20:43,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:20:43,296 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:20:43,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:20:43,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1590755806, now seen corresponding path program 1 times [2020-09-21 12:20:43,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:20:43,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569417793] [2020-09-21 12:20:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:20:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:20:43,339 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:20:43,339 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:20:43,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:20:43,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:20:43 BoogieIcfgContainer [2020-09-21 12:20:43,373 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:20:43,378 INFO L168 Benchmark]: Toolchain (without parser) took 3287.72 ms. Allocated memory was 137.4 MB in the beginning and 229.6 MB in the end (delta: 92.3 MB). Free memory was 100.0 MB in the beginning and 130.6 MB in the end (delta: -30.6 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:43,379 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:20:43,380 INFO L168 Benchmark]: CACSL2BoogieTranslator took 488.42 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 99.3 MB in the beginning and 178.4 MB in the end (delta: -79.1 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:43,380 INFO L168 Benchmark]: Boogie Preprocessor took 67.79 ms. Allocated memory is still 200.8 MB. Free memory was 178.4 MB in the beginning and 175.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:43,381 INFO L168 Benchmark]: RCFGBuilder took 644.85 ms. Allocated memory is still 200.8 MB. Free memory was 175.6 MB in the beginning and 143.5 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:43,386 INFO L168 Benchmark]: TraceAbstraction took 2076.83 ms. Allocated memory was 200.8 MB in the beginning and 229.6 MB in the end (delta: 28.8 MB). Free memory was 142.8 MB in the beginning and 132.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 39.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:20:43,393 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 488.42 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 99.3 MB in the beginning and 178.4 MB in the end (delta: -79.1 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.79 ms. Allocated memory is still 200.8 MB. Free memory was 178.4 MB in the beginning and 175.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 644.85 ms. Allocated memory is still 200.8 MB. Free memory was 175.6 MB in the beginning and 143.5 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2076.83 ms. Allocated memory was 200.8 MB in the beginning and 229.6 MB in the end (delta: 28.8 MB). Free memory was 142.8 MB in the beginning and 132.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 39.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 122]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 116, overapproximation of bitwiseAnd at line 33. Possible FailurePath: [L17] static const double one_modf = 1.0; [L116] double x = 0.0 / 0.0; [L117] double iptr; [L118] CALL, EXPR modf_double(x, &iptr) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND TRUE j0 < 0 [L32] ieee_double_shape_type iw_u; [L33] iw_u.parts.msw = (i0 & 0x80000000) [L34] iw_u.parts.lsw = (0) [L35] EXPR iw_u.value [L35] (*iptr) = iw_u.value [L37] return x; [L118] RET, EXPR modf_double(x, &iptr) [L118] double res = modf_double(x, &iptr); [L121] EXPR \read(iptr) [L121] CALL, EXPR isnan_double(iptr) [L15] return x != x; [L121] RET, EXPR isnan_double(iptr) [L121] isnan_double(iptr) && !isnan_double(res) [L121] CALL, EXPR isnan_double(res) [L15] return x != x; [L121] RET, EXPR isnan_double(res) [L121] isnan_double(iptr) && !isnan_double(res) [L121] COND TRUE isnan_double(iptr) && !isnan_double(res) [L122] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 68 SDslu, 35 SDs, 0 SdLazy, 188 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 2478 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...