/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 04:47:04,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 04:47:04,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 04:47:04,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 04:47:04,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 04:47:04,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 04:47:04,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 04:47:04,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 04:47:04,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 04:47:04,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 04:47:04,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 04:47:04,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 04:47:04,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 04:47:04,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 04:47:04,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 04:47:04,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 04:47:04,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 04:47:04,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 04:47:04,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 04:47:04,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 04:47:04,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 04:47:04,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 04:47:04,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 04:47:04,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 04:47:04,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 04:47:04,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 04:47:04,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 04:47:04,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 04:47:04,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 04:47:04,933 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 04:47:04,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 04:47:04,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 04:47:04,935 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 04:47:04,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 04:47:04,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 04:47:04,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 04:47:04,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 04:47:04,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 04:47:04,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 04:47:04,937 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 04:47:04,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 04:47:04,937 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 04:47:04,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 04:47:04,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 04:47:04,938 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 04:47:04,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 04:47:04,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 04:47:04,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 04:47:04,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 04:47:04,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 04:47:04,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 04:47:04,940 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 04:47:05,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 04:47:05,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 04:47:05,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 04:47:05,354 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 04:47:05,354 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 04:47:05,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-11-07 04:47:05,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dfcfd3b3/eec1bb1734564e43861d1150e55b4b36/FLAGe0ffdb349 [2020-11-07 04:47:06,070 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 04:47:06,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-11-07 04:47:06,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dfcfd3b3/eec1bb1734564e43861d1150e55b4b36/FLAGe0ffdb349 [2020-11-07 04:47:06,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dfcfd3b3/eec1bb1734564e43861d1150e55b4b36 [2020-11-07 04:47:06,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 04:47:06,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 04:47:06,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 04:47:06,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 04:47:06,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 04:47:06,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:47:06" (1/1) ... [2020-11-07 04:47:06,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ed8eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:06, skipping insertion in model container [2020-11-07 04:47:06,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:47:06" (1/1) ... [2020-11-07 04:47:06,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 04:47:06,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 04:47:06,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:47:06,702 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 04:47:06,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:47:06,796 INFO L208 MainTranslator]: Completed translation [2020-11-07 04:47:06,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:06 WrapperNode [2020-11-07 04:47:06,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 04:47:06,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 04:47:06,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 04:47:06,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 04:47:06,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:06" (1/1) ... [2020-11-07 04:47:06,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:06" (1/1) ... [2020-11-07 04:47:06,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:06" (1/1) ... [2020-11-07 04:47:06,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:06" (1/1) ... [2020-11-07 04:47:06,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:06" (1/1) ... [2020-11-07 04:47:06,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:06" (1/1) ... [2020-11-07 04:47:06,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:06" (1/1) ... [2020-11-07 04:47:06,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 04:47:06,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 04:47:06,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 04:47:06,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 04:47:06,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:06" (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 [2020-11-07 04:47:06,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 04:47:06,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 04:47:06,997 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 04:47:06,998 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-11-07 04:47:06,998 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-11-07 04:47:06,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 04:47:06,999 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 04:47:06,999 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 04:47:06,999 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 04:47:06,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 04:47:07,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-11-07 04:47:07,000 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-11-07 04:47:07,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 04:47:07,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 04:47:07,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 04:47:07,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 04:47:07,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 04:47:07,003 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-11-07 04:47:07,003 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 04:47:07,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 04:47:07,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 04:47:07,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-07 04:47:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 04:47:07,880 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 04:47:07,880 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-07 04:47:07,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:47:07 BoogieIcfgContainer [2020-11-07 04:47:07,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 04:47:07,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 04:47:07,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 04:47:07,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 04:47:07,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:47:06" (1/3) ... [2020-11-07 04:47:07,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf1bc86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:47:07, skipping insertion in model container [2020-11-07 04:47:07,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:06" (2/3) ... [2020-11-07 04:47:07,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf1bc86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:47:07, skipping insertion in model container [2020-11-07 04:47:07,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:47:07" (3/3) ... [2020-11-07 04:47:07,893 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-11-07 04:47:07,910 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 04:47:07,915 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 04:47:07,929 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 04:47:07,955 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 04:47:07,955 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 04:47:07,955 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 04:47:07,956 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 04:47:07,956 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 04:47:07,956 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 04:47:07,956 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 04:47:07,956 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 04:47:07,977 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-11-07 04:47:07,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-07 04:47:07,991 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:47:07,992 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] [2020-11-07 04:47:07,992 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:47:07,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:47:08,000 INFO L82 PathProgramCache]: Analyzing trace with hash -682848670, now seen corresponding path program 1 times [2020-11-07 04:47:08,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:47:08,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213333856] [2020-11-07 04:47:08,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:47:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:08,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:47:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:08,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-07 04:47:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:08,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 04:47:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 04:47:08,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213333856] [2020-11-07 04:47:08,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:47:08,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 04:47:08,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574517865] [2020-11-07 04:47:08,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 04:47:08,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:47:08,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 04:47:08,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 04:47:08,410 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 4 states. [2020-11-07 04:47:08,549 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-11-07 04:47:09,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:47:09,251 INFO L93 Difference]: Finished difference Result 315 states and 379 transitions. [2020-11-07 04:47:09,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 04:47:09,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-11-07 04:47:09,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:47:09,266 INFO L225 Difference]: With dead ends: 315 [2020-11-07 04:47:09,267 INFO L226 Difference]: Without dead ends: 161 [2020-11-07 04:47:09,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 04:47:09,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-11-07 04:47:09,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-11-07 04:47:09,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-11-07 04:47:09,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 176 transitions. [2020-11-07 04:47:09,336 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 176 transitions. Word has length 55 [2020-11-07 04:47:09,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:47:09,337 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 176 transitions. [2020-11-07 04:47:09,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 04:47:09,337 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 176 transitions. [2020-11-07 04:47:09,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-11-07 04:47:09,340 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:47:09,341 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, 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] [2020-11-07 04:47:09,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 04:47:09,341 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:47:09,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:47:09,342 INFO L82 PathProgramCache]: Analyzing trace with hash 323090980, now seen corresponding path program 1 times [2020-11-07 04:47:09,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:47:09,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485523211] [2020-11-07 04:47:09,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:47:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:47:09,458 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:47:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:47:09,605 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:47:09,654 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 04:47:09,654 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 04:47:09,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 04:47:09,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:47:09 BoogieIcfgContainer [2020-11-07 04:47:09,721 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 04:47:09,729 INFO L168 Benchmark]: Toolchain (without parser) took 3285.27 ms. Allocated memory was 151.0 MB in the beginning and 198.2 MB in the end (delta: 47.2 MB). Free memory was 126.4 MB in the beginning and 107.3 MB in the end (delta: 19.2 MB). Peak memory consumption was 66.5 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:09,730 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 04:47:09,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.54 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 114.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:09,731 INFO L168 Benchmark]: Boogie Preprocessor took 102.00 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 111.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:09,732 INFO L168 Benchmark]: RCFGBuilder took 981.55 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 110.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:09,734 INFO L168 Benchmark]: TraceAbstraction took 1836.85 ms. Allocated memory was 151.0 MB in the beginning and 198.2 MB in the end (delta: 47.2 MB). Free memory was 109.7 MB in the beginning and 107.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 49.6 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:09,744 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 352.54 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 114.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 102.00 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 111.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 981.55 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 110.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1836.85 ms. Allocated memory was 151.0 MB in the beginning and 198.2 MB in the end (delta: 47.2 MB). Free memory was 109.7 MB in the beginning and 107.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 49.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 34, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseXor at line 33. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=4294967313, \old(Zero_fmod)=4294967311, \old(Zero_fmod)=4294967301, one_fmod=1, Zero_fmod={9:0}] [L128] float x = __VERIFIER_nondet_float(); VAL [__VERIFIER_nondet_float()=4294967305, one_fmod=1, x=4294967305, Zero_fmod={9:0}] [L129] float y = -1.0f / 0.0f; VAL [one_fmod=1, x=4294967305, Zero_fmod={9:0}] [L131] CALL isfinite_float(x) VAL [\old(x)=4294967305, one_fmod=1, Zero_fmod={9:0}] [L111] __int32_t ix; VAL [\old(x)=4294967305, one_fmod=1, x=4294967305, Zero_fmod={9:0}] [L113] ieee_float_shape_type gf_u; VAL [\old(x)=4294967305, gf_u={10:0}, one_fmod=1, x=4294967305, Zero_fmod={9:0}] [L114] gf_u.value = (x) VAL [\old(x)=4294967305, gf_u={10:0}, one_fmod=1, x=4294967305, Zero_fmod={9:0}] [L115] EXPR gf_u.word VAL [\old(x)=4294967305, gf_u={10:0}, gf_u.word=0, one_fmod=1, x=4294967305, Zero_fmod={9:0}] [L115] (ix) = gf_u.word VAL [\old(x)=4294967305, gf_u={10:0}, gf_u.word=0, ix=0, one_fmod=1, x=4294967305, Zero_fmod={9:0}] [L117] ix &= 0x7fffffff VAL [\old(x)=4294967305, one_fmod=1, x=4294967305, Zero_fmod={9:0}] [L118] return (((ix) < 0x7f800000L)); VAL [\old(x)=4294967305, \result=1, ix=2139095039, one_fmod=1, x=4294967305, Zero_fmod={9:0}] [L131] RET isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=4294967305, Zero_fmod={9:0}] [L131] COND TRUE isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=4294967305, Zero_fmod={9:0}] [L133] CALL, EXPR fmod_float(x, y) VAL [\old(x)=4294967305, \old(y)=4294967302, one_fmod=1, Zero_fmod={9:0}] [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=4294967305, \old(y)=4294967302, one_fmod=1, x=4294967305, y=4294967302, Zero_fmod={9:0}] [L23] ieee_float_shape_type gf_u; VAL [\old(x)=4294967305, \old(y)=4294967302, gf_u={11:0}, one_fmod=1, x=4294967305, y=4294967302, Zero_fmod={9:0}] [L24] gf_u.value = (x) VAL [\old(x)=4294967305, \old(y)=4294967302, gf_u={11:0}, one_fmod=1, x=4294967305, y=4294967302, Zero_fmod={9:0}] [L25] EXPR gf_u.word VAL [\old(x)=4294967305, \old(y)=4294967302, gf_u={11:0}, gf_u.word=0, one_fmod=1, x=4294967305, y=4294967302, Zero_fmod={9:0}] [L25] (hx) = gf_u.word VAL [(hx) = gf_u.word=4294967297, \old(x)=4294967305, \old(y)=4294967302, gf_u={11:0}, gf_u.word=0, hx=0, one_fmod=1, x=4294967305, y=4294967302, Zero_fmod={9:0}] [L28] ieee_float_shape_type gf_u; VAL [\old(x)=4294967305, \old(y)=4294967302, gf_u={3:0}, hx=0, one_fmod=1, x=4294967305, y=4294967302, Zero_fmod={9:0}] [L29] gf_u.value = (y) VAL [\old(x)=4294967305, \old(y)=4294967302, gf_u={3:0}, hx=0, one_fmod=1, x=4294967305, y=4294967302, Zero_fmod={9:0}] [L30] EXPR gf_u.word VAL [\old(x)=4294967305, \old(y)=4294967302, gf_u={3:0}, gf_u.word=4294967294, hx=0, one_fmod=1, x=4294967305, y=4294967302, Zero_fmod={9:0}] [L30] (hy) = gf_u.word VAL [(hy) = gf_u.word=4294967298, \old(x)=4294967305, \old(y)=4294967302, gf_u={3:0}, gf_u.word=4294967294, hx=0, hy=-2, one_fmod=1, x=4294967305, y=4294967302, Zero_fmod={9:0}] [L32] sx = hx & 0x80000000 VAL [\old(x)=4294967305, \old(y)=4294967302, hx=0, hy=-2, one_fmod=1, sx=-1, x=4294967305, y=4294967302, Zero_fmod={9:0}] [L33] hx ^= sx VAL [\old(x)=4294967305, \old(y)=4294967302, hy=-2, one_fmod=1, sx=-1, x=4294967305, y=4294967302, Zero_fmod={9:0}] [L34] hy &= 0x7fffffff VAL [\old(x)=4294967305, \old(y)=4294967302, one_fmod=1, sx=-1, x=4294967305, y=4294967302, Zero_fmod={9:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) VAL [\old(x)=4294967305, \old(y)=4294967302, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=4294967305, y=4294967302, Zero_fmod={9:0}] [L37] return (x * y) / (x * y); VAL [\old(x)=4294967305, \old(y)=4294967302, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=4294967305, y=4294967302, Zero_fmod={9:0}] [L133] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=4294967310, one_fmod=1, x=4294967305, y=4294967302, Zero_fmod={9:0}] [L133] float res = fmod_float(x, y); VAL [fmod_float(x, y)=4294967310, one_fmod=1, res=4294967310, x=4294967305, y=4294967302, Zero_fmod={9:0}] [L136] COND TRUE res != x VAL [one_fmod=1, res=4294967310, x=4294967305, y=4294967302, Zero_fmod={9:0}] [L137] CALL reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] [L3] __assert_fail("0", "float_req_bl_1131b.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 170 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 180 SDtfs, 33 SDslu, 127 SDs, 0 SdLazy, 199 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=170occurred 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, 0.2s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 6318 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...