/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_1072b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 00:34:06,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 00:34:06,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 00:34:06,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 00:34:06,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 00:34:06,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 00:34:06,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 00:34:06,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 00:34:06,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 00:34:06,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 00:34:06,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 00:34:06,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 00:34:06,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 00:34:06,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 00:34:06,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 00:34:06,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 00:34:06,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 00:34:06,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 00:34:06,935 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 00:34:06,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 00:34:06,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 00:34:06,940 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 00:34:06,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 00:34:06,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 00:34:06,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 00:34:06,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 00:34:06,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 00:34:06,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 00:34:06,943 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 00:34:06,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 00:34:06,943 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 00:34:06,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 00:34:06,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 00:34:06,944 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 00:34:06,944 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 00:34:06,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 00:34:06,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 00:34:06,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 00:34:06,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 00:34:06,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 00:34:06,945 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 00:34:07,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 00:34:07,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 00:34:07,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 00:34:07,385 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 00:34:07,386 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 00:34:07,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1072b.c [2020-10-24 00:34:07,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41b981364/15f1e7fa63e04b8ca45978ae1e5abb1a/FLAG6756a4870 [2020-10-24 00:34:08,136 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 00:34:08,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1072b.c [2020-10-24 00:34:08,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41b981364/15f1e7fa63e04b8ca45978ae1e5abb1a/FLAG6756a4870 [2020-10-24 00:34:08,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41b981364/15f1e7fa63e04b8ca45978ae1e5abb1a [2020-10-24 00:34:08,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 00:34:08,525 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 00:34:08,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 00:34:08,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 00:34:08,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 00:34:08,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:34:08" (1/1) ... [2020-10-24 00:34:08,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d667cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:08, skipping insertion in model container [2020-10-24 00:34:08,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:34:08" (1/1) ... [2020-10-24 00:34:08,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 00:34:08,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 00:34:08,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:34:08,743 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 00:34:08,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:34:08,789 INFO L208 MainTranslator]: Completed translation [2020-10-24 00:34:08,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:08 WrapperNode [2020-10-24 00:34:08,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 00:34:08,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 00:34:08,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 00:34:08,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 00:34:08,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:08" (1/1) ... [2020-10-24 00:34:08,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:08" (1/1) ... [2020-10-24 00:34:08,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:08" (1/1) ... [2020-10-24 00:34:08,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:08" (1/1) ... [2020-10-24 00:34:08,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:08" (1/1) ... [2020-10-24 00:34:08,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:08" (1/1) ... [2020-10-24 00:34:08,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:08" (1/1) ... [2020-10-24 00:34:08,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 00:34:08,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 00:34:08,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 00:34:08,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 00:34:08,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:08" (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 [2020-10-24 00:34:08,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 00:34:08,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 00:34:08,933 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 00:34:08,933 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_float [2020-10-24 00:34:08,933 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-10-24 00:34:08,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 00:34:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 00:34:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 00:34:08,935 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 00:34:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 00:34:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_float [2020-10-24 00:34:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 00:34:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 00:34:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 00:34:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 00:34:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 00:34:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-10-24 00:34:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 00:34:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 00:34:08,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 00:34:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 00:34:09,591 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 00:34:09,592 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-24 00:34:09,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:34:09 BoogieIcfgContainer [2020-10-24 00:34:09,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 00:34:09,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 00:34:09,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 00:34:09,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 00:34:09,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:34:08" (1/3) ... [2020-10-24 00:34:09,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aeec2af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:34:09, skipping insertion in model container [2020-10-24 00:34:09,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:08" (2/3) ... [2020-10-24 00:34:09,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aeec2af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:34:09, skipping insertion in model container [2020-10-24 00:34:09,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:34:09" (3/3) ... [2020-10-24 00:34:09,604 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072b.c [2020-10-24 00:34:09,618 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 00:34:09,624 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 00:34:09,638 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 00:34:09,665 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 00:34:09,665 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 00:34:09,665 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 00:34:09,665 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 00:34:09,665 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 00:34:09,666 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 00:34:09,666 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 00:34:09,666 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 00:34:09,682 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states. [2020-10-24 00:34:09,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-24 00:34:09,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:34:09,695 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] [2020-10-24 00:34:09,695 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:34:09,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:34:09,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1064733081, now seen corresponding path program 1 times [2020-10-24 00:34:09,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:34:09,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025154252] [2020-10-24 00:34:09,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:34:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:34:09,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:34:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:34:10,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-24 00:34:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:34:10,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-24 00:34:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:34:10,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:34:10,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025154252] [2020-10-24 00:34:10,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:34:10,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 00:34:10,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117706170] [2020-10-24 00:34:10,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 00:34:10,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:34:10,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 00:34:10,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 00:34:10,070 INFO L87 Difference]: Start difference. First operand 91 states. Second operand 4 states. [2020-10-24 00:34:10,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:34:10,464 INFO L93 Difference]: Finished difference Result 161 states and 185 transitions. [2020-10-24 00:34:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 00:34:10,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-24 00:34:10,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:34:10,476 INFO L225 Difference]: With dead ends: 161 [2020-10-24 00:34:10,477 INFO L226 Difference]: Without dead ends: 82 [2020-10-24 00:34:10,481 INFO L677 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 [2020-10-24 00:34:10,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-24 00:34:10,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-24 00:34:10,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-24 00:34:10,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2020-10-24 00:34:10,543 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 41 [2020-10-24 00:34:10,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:34:10,544 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2020-10-24 00:34:10,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 00:34:10,544 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2020-10-24 00:34:10,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-24 00:34:10,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:34:10,547 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] [2020-10-24 00:34:10,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 00:34:10,548 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:34:10,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:34:10,549 INFO L82 PathProgramCache]: Analyzing trace with hash -688613008, now seen corresponding path program 1 times [2020-10-24 00:34:10,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:34:10,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540187303] [2020-10-24 00:34:10,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:34:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:34:10,679 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:34:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:34:10,809 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:34:10,879 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-24 00:34:10,880 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 00:34:10,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 00:34:10,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:34:10 BoogieIcfgContainer [2020-10-24 00:34:10,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 00:34:10,985 INFO L168 Benchmark]: Toolchain (without parser) took 2459.55 ms. Allocated memory was 158.3 MB in the beginning and 212.9 MB in the end (delta: 54.5 MB). Free memory was 134.3 MB in the beginning and 172.2 MB in the end (delta: -37.9 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2020-10-24 00:34:10,986 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 158.3 MB. Free memory is still 131.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 00:34:10,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.58 ms. Allocated memory is still 158.3 MB. Free memory was 133.8 MB in the beginning and 123.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-24 00:34:10,988 INFO L168 Benchmark]: Boogie Preprocessor took 48.01 ms. Allocated memory is still 158.3 MB. Free memory was 123.1 MB in the beginning and 121.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 00:34:10,991 INFO L168 Benchmark]: RCFGBuilder took 754.13 ms. Allocated memory is still 158.3 MB. Free memory was 121.3 MB in the beginning and 132.5 MB in the end (delta: -11.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. [2020-10-24 00:34:10,994 INFO L168 Benchmark]: TraceAbstraction took 1382.60 ms. Allocated memory was 158.3 MB in the beginning and 212.9 MB in the end (delta: 54.5 MB). Free memory was 132.0 MB in the beginning and 172.2 MB in the end (delta: -40.2 MB). Peak memory consumption was 14.8 MB. Max. memory is 8.0 GB. [2020-10-24 00:34:11,001 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 158.3 MB. Free memory is still 131.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 263.58 ms. Allocated memory is still 158.3 MB. Free memory was 133.8 MB in the beginning and 123.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.01 ms. Allocated memory is still 158.3 MB. Free memory was 123.1 MB in the beginning and 121.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 754.13 ms. Allocated memory is still 158.3 MB. Free memory was 121.3 MB in the beginning and 132.5 MB in the end (delta: -11.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1382.60 ms. Allocated memory was 158.3 MB in the beginning and 212.9 MB in the end (delta: 54.5 MB). Free memory was 132.0 MB in the beginning and 172.2 MB in the end (delta: -40.2 MB). Peak memory consumption was 14.8 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 someBinaryArithmeticFLOAToperation at line 39, overapproximation of bitwiseAnd at line 52. Possible FailurePath: [L63] float x = -1.0f / 0.0f; [L64] CALL, EXPR trunc_float(x) VAL [\old(x)=8589934604] [L14] __int32_t signbit, w, exponent_less_127; VAL [\old(x)=8589934604, x=8589934604] [L16] ieee_float_shape_type gf_u; VAL [\old(x)=8589934604, gf_u={8:0}, x=8589934604] [L17] gf_u.value = (x) VAL [\old(x)=8589934604, gf_u={8:0}, x=8589934604] [L18] EXPR gf_u.word VAL [\old(x)=8589934604, gf_u={8:0}, gf_u.word=8589934590, x=8589934604] [L18] (w) = gf_u.word VAL [\old(x)=8589934604, gf_u={8:0}, gf_u.word=8589934590, w=-2, x=8589934604] [L20] signbit = w & 0x80000000 VAL [\old(x)=8589934604, signbit=-3, w=-2, x=8589934604] [L21] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=8589934604, exponent_less_127=255, signbit=-3, w=-2, x=8589934604] [L22] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=8589934604, exponent_less_127=255, signbit=-3, w=-2, x=8589934604] [L38] COND TRUE exponent_less_127 == 255 VAL [\old(x)=8589934604, exponent_less_127=255, signbit=-3, w=-2, x=8589934604] [L39] return x + x; VAL [\old(x)=8589934604, exponent_less_127=255, signbit=-3, w=-2, x=8589934604] [L64] RET, EXPR trunc_float(x) VAL [trunc_float(x)=8589934593, x=8589934604] [L64] float res = trunc_float(x); VAL [res=8589934593, trunc_float(x)=8589934593, x=8589934604] [L67] CALL, EXPR isinf_float(res) VAL [\old(x)=8589934593] [L46] __int32_t ix; VAL [\old(x)=8589934593, x=8589934593] [L48] ieee_float_shape_type gf_u; VAL [\old(x)=8589934593, gf_u={3:0}, x=8589934593] [L49] gf_u.value = (x) VAL [\old(x)=8589934593, gf_u={3:0}, x=8589934593] [L50] EXPR gf_u.word VAL [\old(x)=8589934593, gf_u={3:0}, gf_u.word=4294967295, x=8589934593] [L50] (ix) = gf_u.word VAL [\old(x)=8589934593, gf_u={3:0}, gf_u.word=4294967295, ix=-1, x=8589934593] [L52] ix &= 0x7fffffff VAL [\old(x)=8589934593, x=8589934593] [L53] return ((ix) == 0x7f800000L); VAL [\old(x)=8589934593, \result=0, ix=0, x=8589934593] [L67] RET, EXPR isinf_float(res) VAL [isinf_float(res)=0, res=8589934593, x=8589934604] [L67] COND TRUE !isinf_float(res) VAL [isinf_float(res)=0, res=8589934593, x=8589934604] [L68] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1072b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 91 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 17 SDslu, 53 SDs, 0 SdLazy, 103 SolverSat, 8 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=91occurred 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, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 3760 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...