/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:05:48,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:05:48,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:05:48,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:05:48,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:05:48,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:05:48,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:05:48,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:05:48,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:05:48,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:05:48,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:05:48,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:05:48,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:05:48,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:05:48,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:05:48,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:05:48,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:05:48,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:05:48,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:05:48,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:05:48,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:05:48,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:05:48,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:05:48,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:05:48,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:05:48,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:05:48,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:05:48,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:05:48,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:05:48,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:05:48,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:05:48,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:05:48,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:05:48,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:05:48,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:05:48,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:05:48,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:05:48,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:05:48,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:05:48,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:05:48,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:05:48,611 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 [2020-08-21 18:05:48,632 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:05:48,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:05:48,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:05:48,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:05:48,634 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:05:48,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:05:48,635 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:05:48,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:05:48,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:05:48,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:05:48,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:05:48,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:05:48,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:05:48,636 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:05:48,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:05:48,637 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:05:48,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:05:48,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:05:48,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:05:48,638 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:05:48,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:05:48,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:05:48,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:05:48,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:05:48,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:05:48,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:05:48,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:05:48,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:05:48,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:05:48,640 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 -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:05:48,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:05:48,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:05:48,948 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:05:48,949 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:05:48,950 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:05:48,951 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-21 18:05:49,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e267c36ff/58c1c6e7b5504efb912ab8b077246e23/FLAG84cf26682 [2020-08-21 18:05:49,517 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:05:49,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-08-21 18:05:49,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e267c36ff/58c1c6e7b5504efb912ab8b077246e23/FLAG84cf26682 [2020-08-21 18:05:49,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e267c36ff/58c1c6e7b5504efb912ab8b077246e23 [2020-08-21 18:05:49,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:05:49,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:05:49,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:05:49,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:05:49,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:05:49,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:05:49" (1/1) ... [2020-08-21 18:05:49,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a529ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:49, skipping insertion in model container [2020-08-21 18:05:49,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:05:49" (1/1) ... [2020-08-21 18:05:49,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:05:49,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:05:50,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:05:50,104 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:05:50,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:05:50,271 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:05:50,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:50 WrapperNode [2020-08-21 18:05:50,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:05:50,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:05:50,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:05:50,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:05:50,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:50" (1/1) ... [2020-08-21 18:05:50,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:50" (1/1) ... [2020-08-21 18:05:50,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:50" (1/1) ... [2020-08-21 18:05:50,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:50" (1/1) ... [2020-08-21 18:05:50,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:50" (1/1) ... [2020-08-21 18:05:50,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:50" (1/1) ... [2020-08-21 18:05:50,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:50" (1/1) ... [2020-08-21 18:05:50,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:05:50,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:05:50,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:05:50,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:05:50,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:50" (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 [2020-08-21 18:05:50,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:05:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:05:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-21 18:05:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-21 18:05:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:05:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:05:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-21 18:05:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-21 18:05:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:05:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 18:05:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:05:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:05:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 18:05:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:05:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-21 18:05:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:05:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:05:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-21 18:05:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:05:51,026 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:05:51,026 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-21 18:05:51,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:05:51 BoogieIcfgContainer [2020-08-21 18:05:51,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:05:51,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:05:51,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:05:51,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:05:51,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:05:49" (1/3) ... [2020-08-21 18:05:51,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bb8bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:05:51, skipping insertion in model container [2020-08-21 18:05:51,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:05:50" (2/3) ... [2020-08-21 18:05:51,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bb8bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:05:51, skipping insertion in model container [2020-08-21 18:05:51,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:05:51" (3/3) ... [2020-08-21 18:05:51,040 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-08-21 18:05:51,051 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:05:51,059 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:05:51,072 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:05:51,092 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:05:51,093 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:05:51,093 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:05:51,093 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:05:51,093 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:05:51,093 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:05:51,094 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:05:51,094 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:05:51,114 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-21 18:05:51,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 18:05:51,122 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:05:51,123 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] [2020-08-21 18:05:51,123 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:05:51,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:05:51,130 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-08-21 18:05:51,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:05:51,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549517429] [2020-08-21 18:05:51,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:05:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:51,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:05:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:51,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:05:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:51,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 18:05:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:05:51,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:05:51,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549517429] [2020-08-21 18:05:51,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:05:51,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:05:51,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118394199] [2020-08-21 18:05:51,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:05:51,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:05:51,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:05:51,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:05:51,417 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-21 18:05:51,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:05:51,776 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-21 18:05:51,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:05:51,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-21 18:05:51,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:05:51,793 INFO L225 Difference]: With dead ends: 138 [2020-08-21 18:05:51,793 INFO L226 Difference]: Without dead ends: 68 [2020-08-21 18:05:51,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:05:51,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-21 18:05:51,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-21 18:05:51,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-21 18:05:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-21 18:05:51,879 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-21 18:05:51,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:05:51,881 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-21 18:05:51,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:05:51,881 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-21 18:05:51,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 18:05:51,885 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:05:51,885 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] [2020-08-21 18:05:51,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:05:51,886 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:05:51,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:05:51,887 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-08-21 18:05:51,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:05:51,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299381198] [2020-08-21 18:05:51,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:05:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:05:52,100 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:05:52,100 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:05:52,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:05:52,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:05:52 BoogieIcfgContainer [2020-08-21 18:05:52,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:05:52,128 INFO L168 Benchmark]: Toolchain (without parser) took 2278.61 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 102.5 MB in the beginning and 193.3 MB in the end (delta: -90.8 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. [2020-08-21 18:05:52,129 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 18:05:52,130 INFO L168 Benchmark]: CACSL2BoogieTranslator took 422.81 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 178.1 MB in the end (delta: -75.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-08-21 18:05:52,131 INFO L168 Benchmark]: Boogie Preprocessor took 64.83 ms. Allocated memory is still 202.9 MB. Free memory was 178.1 MB in the beginning and 175.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-21 18:05:52,132 INFO L168 Benchmark]: RCFGBuilder took 693.95 ms. Allocated memory is still 202.9 MB. Free memory was 175.4 MB in the beginning and 139.5 MB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2020-08-21 18:05:52,133 INFO L168 Benchmark]: TraceAbstraction took 1092.17 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 138.8 MB in the beginning and 193.3 MB in the end (delta: -54.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 18:05:52,137 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 422.81 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 178.1 MB in the end (delta: -75.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.83 ms. Allocated memory is still 202.9 MB. Free memory was 178.1 MB in the beginning and 175.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 693.95 ms. Allocated memory is still 202.9 MB. Free memory was 175.4 MB in the beginning and 139.5 MB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1092.17 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 138.8 MB in the beginning and 193.3 MB in the end (delta: -54.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) [L161] __int32_t hx; [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L180] RET isfinite_double(x) [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); [L182] RET, EXPR fmod_double(x, y) [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x [L186] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...