/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 CAMEL_NO_AM -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 0.1.25-79ed534 [2020-07-19 21:11:49,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:11:49,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:11:49,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:11:49,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:11:49,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:11:49,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:11:49,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:11:49,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:11:49,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:11:49,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:11:49,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:11:49,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:11:49,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:11:49,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:11:49,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:11:49,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:11:49,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:11:49,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:11:49,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:11:49,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:11:49,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:11:49,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:11:49,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:11:49,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:11:49,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:11:49,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:11:49,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:11:49,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-19 21:11:49,883 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:11:49,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:11:49,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:11:49,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:11:49,885 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:11:49,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:11:49,885 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:11:49,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:11:49,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:11:49,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:11:49,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:11:49,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:11:49,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:11:49,887 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:11:49,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:11:49,887 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:11:49,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:11:49,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:11:49,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:11:49,888 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:11:49,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:11:49,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:11:49,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:11:49,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:11:49,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:11:49,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:11:49,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:11:49,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:11:49,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:11:49,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:11:50,178 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:11:50,191 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:11:50,195 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:11:50,196 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:11:50,197 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:11:50,197 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-07-19 21:11:50,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06732a0a3/1b662fa4c74a49f19b45c1414a3b549c/FLAGf8c75a981 [2020-07-19 21:11:50,702 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:11:50,703 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-07-19 21:11:50,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06732a0a3/1b662fa4c74a49f19b45c1414a3b549c/FLAGf8c75a981 [2020-07-19 21:11:51,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06732a0a3/1b662fa4c74a49f19b45c1414a3b549c [2020-07-19 21:11:51,068 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:11:51,070 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:11:51,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:11:51,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:11:51,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:11:51,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:51" (1/1) ... [2020-07-19 21:11:51,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc9666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51, skipping insertion in model container [2020-07-19 21:11:51,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:51" (1/1) ... [2020-07-19 21:11:51,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:11:51,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:11:51,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:11:51,379 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:11:51,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:11:51,549 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:11:51,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51 WrapperNode [2020-07-19 21:11:51,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:11:51,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:11:51,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:11:51,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:11:51,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51" (1/1) ... [2020-07-19 21:11:51,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51" (1/1) ... [2020-07-19 21:11:51,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51" (1/1) ... [2020-07-19 21:11:51,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51" (1/1) ... [2020-07-19 21:11:51,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51" (1/1) ... [2020-07-19 21:11:51,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51" (1/1) ... [2020-07-19 21:11:51,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51" (1/1) ... [2020-07-19 21:11:51,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:11:51,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:11:51,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:11:51,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:11:51,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-19 21:11:51,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:11:51,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:11:51,672 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-19 21:11:51,672 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-07-19 21:11:51,672 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:11:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:11:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-19 21:11:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-19 21:11:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 21:11:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-19 21:11:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 21:11:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:11:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-19 21:11:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 21:11:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-07-19 21:11:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:11:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:11:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-19 21:11:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:11:52,270 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:11:52,271 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-19 21:11:52,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:52 BoogieIcfgContainer [2020-07-19 21:11:52,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:11:52,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:11:52,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:11:52,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:11:52,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:11:51" (1/3) ... [2020-07-19 21:11:52,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2586812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:52, skipping insertion in model container [2020-07-19 21:11:52,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:51" (2/3) ... [2020-07-19 21:11:52,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2586812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:52, skipping insertion in model container [2020-07-19 21:11:52,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:52" (3/3) ... [2020-07-19 21:11:52,286 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-07-19 21:11:52,295 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:11:52,302 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:11:52,314 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:11:52,339 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:11:52,340 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:11:52,340 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:11:52,340 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:11:52,340 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:11:52,341 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:11:52,341 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:11:52,341 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:11:52,362 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-19 21:11:52,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-19 21:11:52,369 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:11:52,370 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] [2020-07-19 21:11:52,371 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:11:52,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:11:52,377 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-07-19 21:11:52,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:11:52,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970079563] [2020-07-19 21:11:52,388 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1e503cbe [2020-07-19 21:11:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:11:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:11:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:11:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:11:52,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:11:52,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970079563] [2020-07-19 21:11:52,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:11:52,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:11:52,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496836792] [2020-07-19 21:11:52,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:11:52,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:11:52,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:11:52,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:11:52,690 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-07-19 21:11:53,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:11:53,031 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-07-19 21:11:53,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:11:53,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-07-19 21:11:53,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:11:53,043 INFO L225 Difference]: With dead ends: 138 [2020-07-19 21:11:53,043 INFO L226 Difference]: Without dead ends: 68 [2020-07-19 21:11:53,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:11:53,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-19 21:11:53,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-19 21:11:53,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-19 21:11:53,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-07-19 21:11:53,098 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-07-19 21:11:53,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:11:53,098 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-07-19 21:11:53,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:11:53,099 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-07-19 21:11:53,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-19 21:11:53,100 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:11:53,100 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] [2020-07-19 21:11:53,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:11:53,101 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:11:53,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:11:53,102 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-07-19 21:11:53,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:11:53,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830772348] [2020-07-19 21:11:53,102 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1e503cbe [2020-07-19 21:11:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:11:53,248 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:11:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:11:53,413 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:11:53,445 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 21:11:53,446 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 21:11:53,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:11:53,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:11:53 BoogieIcfgContainer [2020-07-19 21:11:53,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:11:53,485 INFO L168 Benchmark]: Toolchain (without parser) took 2414.92 ms. Allocated memory was 145.2 MB in the beginning and 235.4 MB in the end (delta: 90.2 MB). Free memory was 100.9 MB in the beginning and 180.4 MB in the end (delta: -79.5 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:53,486 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 21:11:53,488 INFO L168 Benchmark]: CACSL2BoogieTranslator took 478.85 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 100.7 MB in the beginning and 177.8 MB in the end (delta: -77.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:53,488 INFO L168 Benchmark]: Boogie Preprocessor took 65.35 ms. Allocated memory is still 202.4 MB. Free memory was 177.8 MB in the beginning and 175.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:53,489 INFO L168 Benchmark]: RCFGBuilder took 662.10 ms. Allocated memory is still 202.4 MB. Free memory was 175.1 MB in the beginning and 139.1 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:53,490 INFO L168 Benchmark]: TraceAbstraction took 1203.69 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 138.4 MB in the beginning and 180.4 MB in the end (delta: -42.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-19 21:11:53,494 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 145.2 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 478.85 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 100.7 MB in the beginning and 177.8 MB in the end (delta: -77.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.35 ms. Allocated memory is still 202.4 MB. Free memory was 177.8 MB in the beginning and 175.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 662.10 ms. Allocated memory is still 202.4 MB. Free memory was 175.1 MB in the beginning and 139.1 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1203.69 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 138.4 MB in the beginning and 180.4 MB in the end (delta: -42.0 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, }; VAL [\old(one_fmod)=9223372034706243602, \old(Zero_fmod)=9223372034706243599, \old(Zero_fmod)=9223372034706243590, one_fmod=1, Zero_fmod={3:0}] [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) VAL [\old(x)=9223372034706243588, one_fmod=1, Zero_fmod={3:0}] [L161] __int32_t hx; VAL [\old(x)=9223372034706243588, one_fmod=1, x=9223372034706243588, Zero_fmod={3:0}] [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); VAL [\old(x)=9223372034706243588, \result=6, hx=-1, one_fmod=1, x=9223372034706243588, Zero_fmod={3:0}] [L180] RET isfinite_double(x) VAL [isfinite_double(x)=6, one_fmod=1, x=9223372034706243588, Zero_fmod={3:0}] [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) VAL [\old(x)=9223372034706243588, \old(y)=9223372034706243603, one_fmod=1, Zero_fmod={3:0}] [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; VAL [\old(x)=9223372034706243588, \old(y)=9223372034706243603, one_fmod=1, x=9223372034706243588, y=9223372034706243603, Zero_fmod={3:0}] [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 VAL [\old(x)=9223372034706243588, \old(y)=9223372034706243603, lx=9223372034706243600, ly=9223372034706243587, one_fmod=1, sx=9, x=9223372034706243588, y=9223372034706243603, Zero_fmod={3:0}] [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); VAL [\old(x)=9223372034706243588, \old(y)=9223372034706243603, hx=2146435072, lx=9223372034706243600, ly=9223372034706243587, one_fmod=1, sx=9, x=9223372034706243588, y=9223372034706243603, Zero_fmod={3:0}] [L182] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=9223372034706243589, one_fmod=1, x=9223372034706243588, y=9223372034706243603, Zero_fmod={3:0}] [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x VAL [one_fmod=1, res=9223372034706243589, x=9223372034706243588, y=9223372034706243603, Zero_fmod={3:0}] [L186] __VERIFIER_error() VAL [one_fmod=1, res=9223372034706243589, x=9223372034706243588, y=9223372034706243603, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, 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, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 0.1s 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...