/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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 04:47:00,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 04:47:00,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 04:47:00,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 04:47:00,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 04:47:00,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 04:47:00,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 04:47:00,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 04:47:00,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 04:47:00,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 04:47:00,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 04:47:00,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 04:47:00,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 04:47:00,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 04:47:00,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 04:47:00,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 04:47:00,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 04:47:00,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 04:47:00,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 04:47:00,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 04:47:00,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 04:47:00,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 04:47:00,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 04:47:00,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 04:47:00,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 04:47:00,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 04:47:00,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 04:47:00,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 04:47:00,861 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 04:47:00,873 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 04:47:00,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 04:47:00,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 04:47:00,875 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 04:47:00,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 04:47:00,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 04:47:00,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 04:47:00,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 04:47:00,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 04:47:00,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 04:47:00,876 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 04:47:00,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 04:47:00,876 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 04:47:00,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 04:47:00,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 04:47:00,877 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 04:47:00,877 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 04:47:00,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 04:47:00,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 04:47:00,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 04:47:00,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 04:47:00,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 04:47:00,878 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 04:47:01,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 04:47:01,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 04:47:01,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 04:47:01,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 04:47:01,313 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 04:47:01,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-11-07 04:47:01,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b07d3b3f/b0f157dfd1414070aeea078bb1b95620/FLAG83d7f8339 [2020-11-07 04:47:02,021 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 04:47:02,022 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-11-07 04:47:02,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b07d3b3f/b0f157dfd1414070aeea078bb1b95620/FLAG83d7f8339 [2020-11-07 04:47:02,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b07d3b3f/b0f157dfd1414070aeea078bb1b95620 [2020-11-07 04:47:02,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 04:47:02,369 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 04:47:02,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 04:47:02,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 04:47:02,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 04:47:02,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:47:02" (1/1) ... [2020-11-07 04:47:02,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@584f2021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:02, skipping insertion in model container [2020-11-07 04:47:02,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:47:02" (1/1) ... [2020-11-07 04:47:02,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 04:47:02,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 04:47:02,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:47:02,689 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 04:47:02,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:47:02,775 INFO L208 MainTranslator]: Completed translation [2020-11-07 04:47:02,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:02 WrapperNode [2020-11-07 04:47:02,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 04:47:02,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 04:47:02,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 04:47:02,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 04:47:02,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:02" (1/1) ... [2020-11-07 04:47:02,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:02" (1/1) ... [2020-11-07 04:47:02,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:02" (1/1) ... [2020-11-07 04:47:02,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:02" (1/1) ... [2020-11-07 04:47:02,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:02" (1/1) ... [2020-11-07 04:47:02,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:02" (1/1) ... [2020-11-07 04:47:02,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:02" (1/1) ... [2020-11-07 04:47:02,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 04:47:02,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 04:47:02,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 04:47:02,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 04:47:02,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:02" (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 04:47:02,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 04:47:02,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 04:47:02,949 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 04:47:02,949 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-11-07 04:47:02,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-11-07 04:47:02,950 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 04:47:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 04:47:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 04:47:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 04:47:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 04:47:02,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-11-07 04:47:02,951 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-11-07 04:47:02,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 04:47:02,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 04:47:02,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 04:47:02,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 04:47:02,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 04:47:02,952 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-11-07 04:47:02,952 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 04:47:02,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 04:47:02,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 04:47:02,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-07 04:47:02,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 04:47:03,744 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 04:47:03,745 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-07 04:47:03,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:47:03 BoogieIcfgContainer [2020-11-07 04:47:03,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 04:47:03,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 04:47:03,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 04:47:03,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 04:47:03,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:47:02" (1/3) ... [2020-11-07 04:47:03,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6993dfe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:47:03, skipping insertion in model container [2020-11-07 04:47:03,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:02" (2/3) ... [2020-11-07 04:47:03,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6993dfe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:47:03, skipping insertion in model container [2020-11-07 04:47:03,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:47:03" (3/3) ... [2020-11-07 04:47:03,756 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-11-07 04:47:03,773 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 04:47:03,777 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 04:47:03,790 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 04:47:03,815 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 04:47:03,815 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 04:47:03,815 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 04:47:03,816 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 04:47:03,816 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 04:47:03,816 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 04:47:03,816 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 04:47:03,816 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 04:47:03,837 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-11-07 04:47:03,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-07 04:47:03,850 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:47:03,851 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] [2020-11-07 04:47:03,851 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:47:03,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:47:03,858 INFO L82 PathProgramCache]: Analyzing trace with hash 306928987, now seen corresponding path program 1 times [2020-11-07 04:47:03,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:47:03,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489761194] [2020-11-07 04:47:03,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:47:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:04,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:47:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:04,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-11-07 04:47:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:04,211 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 04:47:04,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489761194] [2020-11-07 04:47:04,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:47:04,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 04:47:04,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176484722] [2020-11-07 04:47:04,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 04:47:04,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:47:04,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 04:47:04,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 04:47:04,242 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 4 states. [2020-11-07 04:47:04,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:47:04,735 INFO L93 Difference]: Finished difference Result 317 states and 382 transitions. [2020-11-07 04:47:04,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 04:47:04,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-11-07 04:47:04,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:47:04,749 INFO L225 Difference]: With dead ends: 317 [2020-11-07 04:47:04,749 INFO L226 Difference]: Without dead ends: 164 [2020-11-07 04:47:04,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 04:47:04,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-11-07 04:47:04,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-11-07 04:47:04,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-11-07 04:47:04,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 180 transitions. [2020-11-07 04:47:04,828 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 180 transitions. Word has length 49 [2020-11-07 04:47:04,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:47:04,829 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 180 transitions. [2020-11-07 04:47:04,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 04:47:04,830 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 180 transitions. [2020-11-07 04:47:04,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-07 04:47:04,835 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:47:04,835 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] [2020-11-07 04:47:04,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 04:47:04,836 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:47:04,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:47:04,837 INFO L82 PathProgramCache]: Analyzing trace with hash -285900520, now seen corresponding path program 1 times [2020-11-07 04:47:04,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:47:04,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157071931] [2020-11-07 04:47:04,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:47:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:47:04,965 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:47:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:47:05,057 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:47:05,127 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 04:47:05,128 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 04:47:05,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 04:47:05,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:47:05 BoogieIcfgContainer [2020-11-07 04:47:05,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 04:47:05,234 INFO L168 Benchmark]: Toolchain (without parser) took 2866.83 ms. Allocated memory is still 152.0 MB. Free memory was 109.1 MB in the beginning and 50.4 MB in the end (delta: 58.7 MB). Peak memory consumption was 59.6 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:05,236 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory was 126.3 MB in the beginning and 126.2 MB in the end (delta: 103.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 04:47:05,239 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.55 ms. Allocated memory is still 152.0 MB. Free memory was 108.5 MB in the beginning and 135.9 MB in the end (delta: -27.4 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:05,240 INFO L168 Benchmark]: Boogie Preprocessor took 79.86 ms. Allocated memory is still 152.0 MB. Free memory was 135.9 MB in the beginning and 134.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:05,241 INFO L168 Benchmark]: RCFGBuilder took 881.84 ms. Allocated memory is still 152.0 MB. Free memory was 134.4 MB in the beginning and 98.0 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:05,242 INFO L168 Benchmark]: TraceAbstraction took 1480.19 ms. Allocated memory is still 152.0 MB. Free memory was 97.7 MB in the beginning and 50.4 MB in the end (delta: 47.3 MB). Peak memory consumption was 48.5 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:05,252 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory was 126.3 MB in the beginning and 126.2 MB in the end (delta: 103.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 413.55 ms. Allocated memory is still 152.0 MB. Free memory was 108.5 MB in the beginning and 135.9 MB in the end (delta: -27.4 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.86 ms. Allocated memory is still 152.0 MB. Free memory was 135.9 MB in the beginning and 134.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 881.84 ms. Allocated memory is still 152.0 MB. Free memory was 134.4 MB in the beginning and 98.0 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1480.19 ms. Allocated memory is still 152.0 MB. Free memory was 97.7 MB in the beginning and 50.4 MB in the end (delta: 47.3 MB). Peak memory consumption was 48.5 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 bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=8589934607, \old(Zero_fmod)=8589934597, \old(Zero_fmod)=8589934605, one_fmod=1, Zero_fmod={9:0}] [L128] float x = 0.0f; VAL [one_fmod=1, x=0, Zero_fmod={9:0}] [L129] float y = __VERIFIER_nondet_float(); VAL [__VERIFIER_nondet_float()=8589934595, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L131] COND TRUE (y < 0.0f || y > 0.0f) VAL [one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L133] CALL, EXPR fmod_float(x, y) VAL [\old(x)=0, \old(y)=8589934595, one_fmod=1, Zero_fmod={9:0}] [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=8589934595, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L23] ieee_float_shape_type gf_u; VAL [\old(x)=0, \old(y)=8589934595, gf_u={10:0}, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L24] gf_u.value = (x) VAL [\old(x)=0, \old(y)=8589934595, gf_u={10:0}, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L25] EXPR gf_u.word VAL [\old(x)=0, \old(y)=8589934595, gf_u={10:0}, gf_u.word=8589934590, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L25] (hx) = gf_u.word VAL [(hx) = gf_u.word=8589934592, \old(x)=0, \old(y)=8589934595, gf_u={10:0}, gf_u.word=8589934590, hx=-2, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L28] ieee_float_shape_type gf_u; VAL [\old(x)=0, \old(y)=8589934595, gf_u={3:0}, hx=-2, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L29] gf_u.value = (y) VAL [\old(x)=0, \old(y)=8589934595, gf_u={3:0}, hx=-2, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L30] EXPR gf_u.word VAL [\old(x)=0, \old(y)=8589934595, gf_u={3:0}, gf_u.word=4294967293, hx=-2, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L30] (hy) = gf_u.word VAL [\old(x)=0, \old(y)=8589934595, gf_u={3:0}, gf_u.word=4294967293, hx=-2, hy=-3, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L32] sx = hx & 0x80000000 VAL [\old(x)=0, \old(y)=8589934595, hx=-2, hy=-3, one_fmod=1, sx=-1, x=0, y=8589934595, Zero_fmod={9:0}] [L33] hx ^= sx VAL [\old(x)=0, \old(y)=8589934595, hy=-3, one_fmod=1, sx=-1, x=0, y=8589934595, Zero_fmod={9:0}] [L34] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=8589934595, one_fmod=1, sx=-1, x=0, y=8589934595, Zero_fmod={9:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) VAL [\old(x)=0, \old(y)=8589934595, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=0, y=8589934595, Zero_fmod={9:0}] [L37] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=8589934595, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=0, y=8589934595, Zero_fmod={9:0}] [L133] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=8589934606, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L133] float res = fmod_float(x, y); VAL [fmod_float(x, y)=8589934606, one_fmod=1, res=8589934606, x=0, y=8589934595, Zero_fmod={9:0}] [L136] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_fmod=1, res=8589934606, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=8589934595, Zero_fmod={9:0}] [L136] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) VAL [one_fmod=1, res=8589934606, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=8589934595, Zero_fmod={9:0}] [L137] CALL reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] [L3] __assert_fail("0", "float_req_bl_1130a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 174 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 185 SDtfs, 41 SDslu, 128 SDs, 0 SdLazy, 204 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred 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, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 4752 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...