/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:05:12,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:05:12,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:05:12,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:05:12,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:05:12,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:05:12,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:05:12,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:05:12,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:05:12,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:05:12,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:05:12,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:05:12,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:05:12,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:05:12,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:05:12,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:05:12,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:05:12,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:05:12,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:05:12,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:05:12,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:05:12,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:05:12,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:05:12,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:05:12,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:05:12,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:05:12,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:05:12,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:05:12,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:05:12,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:05:12,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:05:12,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:05:12,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:05:12,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:05:12,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:05:12,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:05:12,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:05:12,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:05:12,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:05:12,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:05:12,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:05:12,578 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 11:05:12,625 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:05:12,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:05:12,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:05:12,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:05:12,629 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:05:12,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:05:12,629 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:05:12,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:05:12,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:05:12,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:05:12,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:05:12,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:05:12,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:05:12,632 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:05:12,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:05:12,632 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:05:12,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:05:12,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:05:12,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:05:12,633 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:05:12,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:05:12,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:05:12,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:05:12,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:05:12,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:05:12,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:05:12,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:05:12,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:05:12,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:05:12,635 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=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:05:13,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:05:13,161 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:05:13,167 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:05:13,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:05:13,170 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:05:13,171 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2020-09-25 11:05:13,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d690dc6fe/e3bd61b6a0df4c49a2ca9c60ea660cf8/FLAG8593f0d1e [2020-09-25 11:05:13,828 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:05:13,829 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2020-09-25 11:05:13,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d690dc6fe/e3bd61b6a0df4c49a2ca9c60ea660cf8/FLAG8593f0d1e [2020-09-25 11:05:14,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d690dc6fe/e3bd61b6a0df4c49a2ca9c60ea660cf8 [2020-09-25 11:05:14,144 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:05:14,151 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:05:14,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:05:14,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:05:14,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:05:14,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:05:14" (1/1) ... [2020-09-25 11:05:14,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693e2903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:14, skipping insertion in model container [2020-09-25 11:05:14,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:05:14" (1/1) ... [2020-09-25 11:05:14,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:05:14,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:05:14,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:05:14,463 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:05:14,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:05:14,520 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:05:14,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:14 WrapperNode [2020-09-25 11:05:14,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:05:14,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:05:14,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:05:14,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:05:14,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:14" (1/1) ... [2020-09-25 11:05:14,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:14" (1/1) ... [2020-09-25 11:05:14,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:14" (1/1) ... [2020-09-25 11:05:14,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:14" (1/1) ... [2020-09-25 11:05:14,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:14" (1/1) ... [2020-09-25 11:05:14,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:14" (1/1) ... [2020-09-25 11:05:14,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:14" (1/1) ... [2020-09-25 11:05:14,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:05:14,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:05:14,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:05:14,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:05:14,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:14" (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 11:05:14,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:05:14,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:05:14,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 11:05:14,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-09-25 11:05:14,737 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2020-09-25 11:05:14,737 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:05:14,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:05:14,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-25 11:05:14,738 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 11:05:14,738 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-09-25 11:05:14,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 11:05:14,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 11:05:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 11:05:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 11:05:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2020-09-25 11:05:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:05:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:05:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:05:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 11:05:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 11:05:15,111 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:05:15,111 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 11:05:15,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:05:15 BoogieIcfgContainer [2020-09-25 11:05:15,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:05:15,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:05:15,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:05:15,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:05:15,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:05:14" (1/3) ... [2020-09-25 11:05:15,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395da6fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:05:15, skipping insertion in model container [2020-09-25 11:05:15,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:14" (2/3) ... [2020-09-25 11:05:15,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395da6fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:05:15, skipping insertion in model container [2020-09-25 11:05:15,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:05:15" (3/3) ... [2020-09-25 11:05:15,127 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2020-09-25 11:05:15,137 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:05:15,146 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:05:15,166 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:05:15,194 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:05:15,194 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:05:15,194 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:05:15,194 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:05:15,194 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:05:15,194 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:05:15,194 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:05:15,194 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:05:15,219 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-09-25 11:05:15,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 11:05:15,228 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:05:15,229 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] [2020-09-25 11:05:15,230 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:05:15,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:05:15,237 INFO L82 PathProgramCache]: Analyzing trace with hash 6613302, now seen corresponding path program 1 times [2020-09-25 11:05:15,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:05:15,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803087506] [2020-09-25 11:05:15,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:05:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:15,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:15,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:15,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:15,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 11:05:15,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:05:15,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-09-25 11:05:15,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:15,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:05:15,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 11:05:15,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 11:05:15,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:05:15,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:05:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:15,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:15,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:15,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:05:15,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:15,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:05:15,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:15,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:15,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:15,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:15,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:15,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:15,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 11:05:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:15,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:15,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:15,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:15,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:05:15,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:05:15,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 11:05:15,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:15,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:15,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:05:15,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:05:15,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 11:05:15,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:15,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:05:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:15,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:15,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:15,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:15,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:05:15,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:05:15,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:05:15,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:15,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:15,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:05:15,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:15,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:05:15,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:16,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 11:05:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:16,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:16,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:16,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:05:16,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:16,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:05:16,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:16,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:16,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:16,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:05:16,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:16,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:16,023 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 11:05:16,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803087506] [2020-09-25 11:05:16,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:05:16,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 11:05:16,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66382922] [2020-09-25 11:05:16,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:05:16,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:05:16,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:05:16,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:05:16,057 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 6 states. [2020-09-25 11:05:16,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:05:16,409 INFO L93 Difference]: Finished difference Result 149 states and 172 transitions. [2020-09-25 11:05:16,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:05:16,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 11:05:16,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:05:16,426 INFO L225 Difference]: With dead ends: 149 [2020-09-25 11:05:16,427 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 11:05:16,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 11:05:16,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 11:05:16,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-09-25 11:05:16,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 11:05:16,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-09-25 11:05:16,497 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 38 [2020-09-25 11:05:16,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:05:16,498 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-09-25 11:05:16,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:05:16,499 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-09-25 11:05:16,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 11:05:16,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:05:16,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:05:16,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:05:16,503 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:05:16,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:05:16,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1915658490, now seen corresponding path program 1 times [2020-09-25 11:05:16,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:05:16,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436279477] [2020-09-25 11:05:16,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:05:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:16,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:16,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:16,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 11:05:16,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:16,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-25 11:05:16,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:16,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:05:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 11:05:16,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 11:05:16,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:16,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:05:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:16,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:16,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:16,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:05:16,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:16,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:05:16,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:16,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:16,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:16,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:16,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:16,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:16,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 11:05:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:16,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:16,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:16,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 11:05:16,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:16,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 11:05:16,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:16,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:16,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:05:16,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 11:05:16,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 11:05:16,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:17,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 11:05:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:17,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:17,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:17,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:05:17,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:17,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 11:05:17,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:17,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:05:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:05:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:05:17,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:05:17,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 11:05:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:05:17,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:05:17,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:05:17,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 11:05:17,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:05:17,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:05:17,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:05:17,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:05:17,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:05:17,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:05:17,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:05:17,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:05:17,167 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 11:05:17,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436279477] [2020-09-25 11:05:17,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:05:17,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 11:05:17,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297624455] [2020-09-25 11:05:17,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:05:17,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:05:17,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:05:17,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:05:17,176 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 6 states. [2020-09-25 11:05:17,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:05:17,447 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2020-09-25 11:05:17,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:05:17,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-09-25 11:05:17,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:05:17,451 INFO L225 Difference]: With dead ends: 97 [2020-09-25 11:05:17,451 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 11:05:17,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:05:17,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 11:05:17,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2020-09-25 11:05:17,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 11:05:17,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-09-25 11:05:17,467 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 55 [2020-09-25 11:05:17,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:05:17,467 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-09-25 11:05:17,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:05:17,468 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-09-25 11:05:17,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 11:05:17,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:05:17,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:05:17,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:05:17,471 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:05:17,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:05:17,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1520711866, now seen corresponding path program 1 times [2020-09-25 11:05:17,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:05:17,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146567228] [2020-09-25 11:05:17,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:05:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 11:05:17,499 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 11:05:17,499 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 11:05:17,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:05:17,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:05:17 BoogieIcfgContainer [2020-09-25 11:05:17,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:05:17,535 INFO L168 Benchmark]: Toolchain (without parser) took 3385.45 ms. Allocated memory was 141.0 MB in the beginning and 234.9 MB in the end (delta: 93.8 MB). Free memory was 104.5 MB in the beginning and 96.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 101.8 MB. Max. memory is 7.1 GB. [2020-09-25 11:05:17,537 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 11:05:17,540 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.32 ms. Allocated memory is still 141.0 MB. Free memory was 103.8 MB in the beginning and 93.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-25 11:05:17,541 INFO L168 Benchmark]: Boogie Preprocessor took 139.91 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.0 MB in the beginning and 181.3 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-25 11:05:17,542 INFO L168 Benchmark]: RCFGBuilder took 455.35 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 159.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-25 11:05:17,543 INFO L168 Benchmark]: TraceAbstraction took 2410.75 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 158.4 MB in the beginning and 96.5 MB in the end (delta: 61.8 MB). Peak memory consumption was 92.7 MB. Max. memory is 7.1 GB. [2020-09-25 11:05:17,547 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 366.32 ms. Allocated memory is still 141.0 MB. Free memory was 103.8 MB in the beginning and 93.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.91 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.0 MB in the beginning and 181.3 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 455.35 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 159.0 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2410.75 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 158.4 MB in the beginning and 96.5 MB in the end (delta: 61.8 MB). Peak memory consumption was 92.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 66]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 62. Possible FailurePath: [L61] double x = 0.0 / 0.0; [L62] double y = 0.0 / 0.0; [L63] CALL, EXPR fmin_double(x, y) [L45] CALL, EXPR __fpclassify_double(x) [L18] __uint32_t msw, lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] return 0; [L45] RET, EXPR __fpclassify_double(x) [L45] COND TRUE __fpclassify_double(x) == 0 [L46] return y; [L63] RET, EXPR fmin_double(x, y) [L63] double res = fmin_double(x, y); [L65] CALL, EXPR isnan_double(res) [L16] return x != x; [L65] RET, EXPR isnan_double(res) [L65] COND TRUE !isnan_double(res) [L66] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 162 SDtfs, 44 SDslu, 375 SDs, 0 SdLazy, 239 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred 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, 1.2s InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 8016 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...