/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:11:00,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:11:00,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:11:00,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:11:00,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:11:00,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:11:00,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:11:00,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:11:00,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:11:00,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:11:00,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:11:00,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:11:00,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:11:00,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:11:00,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:11:00,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:11:00,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:11:00,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:11:00,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:11:00,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:11:00,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:11:00,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:11:00,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:11:00,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:11:00,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 16:11:00,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 16:11:00,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 16:11:00,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 16:11:00,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 16:11:00,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-04 16:11:00,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:11:00,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:11:00,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:11:00,837 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:11:00,849 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:11:00,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:11:00,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:11:00,851 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:11:00,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:11:00,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:11:00,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:11:00,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:11:00,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:11:00,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:11:00,853 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:11:00,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:11:00,853 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:11:00,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:11:00,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:11:00,854 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:11:00,854 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:11:00,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:11:00,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:11:00,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:11:00,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:11:00,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:11:00,855 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:11:01,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:11:01,320 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:11:01,324 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:11:01,328 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:11:01,329 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:11:01,330 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c [2020-09-04 16:11:01,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cf9d26fd/c1dd277f7fc64a0cbd774ad8d3440697/FLAG761b1201c [2020-09-04 16:11:01,974 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:11:01,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c [2020-09-04 16:11:01,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cf9d26fd/c1dd277f7fc64a0cbd774ad8d3440697/FLAG761b1201c [2020-09-04 16:11:02,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cf9d26fd/c1dd277f7fc64a0cbd774ad8d3440697 [2020-09-04 16:11:02,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:11:02,302 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:11:02,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:11:02,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:11:02,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:11:02,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:11:02" (1/1) ... [2020-09-04 16:11:02,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16575b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:02, skipping insertion in model container [2020-09-04 16:11:02,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:11:02" (1/1) ... [2020-09-04 16:11:02,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:11:02,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:11:02,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:11:02,598 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:11:02,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:11:02,660 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:11:02,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:02 WrapperNode [2020-09-04 16:11:02,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:11:02,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:11:02,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:11:02,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:11:02,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:02" (1/1) ... [2020-09-04 16:11:02,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:02" (1/1) ... [2020-09-04 16:11:02,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:02" (1/1) ... [2020-09-04 16:11:02,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:02" (1/1) ... [2020-09-04 16:11:02,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:02" (1/1) ... [2020-09-04 16:11:02,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:02" (1/1) ... [2020-09-04 16:11:02,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:02" (1/1) ... [2020-09-04 16:11:02,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:11:02,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:11:02,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:11:02,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:11:02,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:11:02,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:11:02,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:11:02,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-09-04 16:11:02,908 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-09-04 16:11:02,908 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:11:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:11:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-04 16:11:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-09-04 16:11:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:11:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 16:11:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:11:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:11:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:11:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 16:11:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-09-04 16:11:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:11:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:11:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:11:03,401 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:11:03,401 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-04 16:11:03,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:11:03 BoogieIcfgContainer [2020-09-04 16:11:03,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:11:03,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:11:03,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:11:03,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:11:03,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:11:02" (1/3) ... [2020-09-04 16:11:03,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3a34db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:11:03, skipping insertion in model container [2020-09-04 16:11:03,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:02" (2/3) ... [2020-09-04 16:11:03,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3a34db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:11:03, skipping insertion in model container [2020-09-04 16:11:03,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:11:03" (3/3) ... [2020-09-04 16:11:03,418 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730a.c [2020-09-04 16:11:03,430 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:11:03,439 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:11:03,459 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:11:03,482 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:11:03,482 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:11:03,482 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:11:03,482 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:11:03,483 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:11:03,483 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:11:03,483 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:11:03,483 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:11:03,502 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states. [2020-09-04 16:11:03,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-04 16:11:03,515 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:11:03,516 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] [2020-09-04 16:11:03,517 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:11:03,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:11:03,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1347664399, now seen corresponding path program 1 times [2020-09-04 16:11:03,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:11:03,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946076397] [2020-09-04 16:11:03,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:11:03,606 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:11:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:03,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:11:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:03,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 16:11:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:03,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:11:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:11:03,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946076397] [2020-09-04 16:11:03,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:11:03,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:11:03,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621957813] [2020-09-04 16:11:03,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:11:03,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:11:03,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:11:03,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:11:03,874 INFO L87 Difference]: Start difference. First operand 117 states. Second operand 4 states. [2020-09-04 16:11:04,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:11:04,242 INFO L93 Difference]: Finished difference Result 212 states and 251 transitions. [2020-09-04 16:11:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 16:11:04,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-09-04 16:11:04,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:11:04,260 INFO L225 Difference]: With dead ends: 212 [2020-09-04 16:11:04,260 INFO L226 Difference]: Without dead ends: 110 [2020-09-04 16:11:04,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:11:04,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-04 16:11:04,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-09-04 16:11:04,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-04 16:11:04,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2020-09-04 16:11:04,333 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 41 [2020-09-04 16:11:04,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:11:04,333 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2020-09-04 16:11:04,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:11:04,334 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2020-09-04 16:11:04,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-04 16:11:04,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:11:04,337 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] [2020-09-04 16:11:04,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:11:04,338 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:11:04,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:11:04,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1528682335, now seen corresponding path program 1 times [2020-09-04 16:11:04,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:11:04,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636741727] [2020-09-04 16:11:04,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:11:04,342 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:11:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:11:04,427 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:11:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:11:04,477 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:11:04,522 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:11:04,522 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:11:04,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:11:04,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:11:04 BoogieIcfgContainer [2020-09-04 16:11:04,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:11:04,553 INFO L168 Benchmark]: Toolchain (without parser) took 2249.65 ms. Allocated memory was 141.6 MB in the beginning and 235.9 MB in the end (delta: 94.4 MB). Free memory was 102.7 MB in the beginning and 198.3 MB in the end (delta: -95.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:11:04,554 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:11:04,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.91 ms. Allocated memory is still 141.6 MB. Free memory was 102.3 MB in the beginning and 90.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:04,556 INFO L168 Benchmark]: Boogie Preprocessor took 167.40 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 90.6 MB in the beginning and 180.6 MB in the end (delta: -90.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:04,557 INFO L168 Benchmark]: RCFGBuilder took 578.44 ms. Allocated memory is still 203.4 MB. Free memory was 180.6 MB in the beginning and 152.5 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:04,558 INFO L168 Benchmark]: TraceAbstraction took 1140.55 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 151.8 MB in the beginning and 198.3 MB in the end (delta: -46.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:11:04,562 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 357.91 ms. Allocated memory is still 141.6 MB. Free memory was 102.3 MB in the beginning and 90.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 167.40 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 90.6 MB in the beginning and 180.6 MB in the end (delta: -90.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 578.44 ms. Allocated memory is still 203.4 MB. Free memory was 180.6 MB in the beginning and 152.5 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1140.55 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 151.8 MB in the beginning and 198.3 MB in the end (delta: -46.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 107]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 27, overapproximation of bitwiseAnd at line 89. Possible FailurePath: [L12] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L101] float x = 1.0f / 0.0f; [L103] CALL, EXPR __ieee754_sqrtf(x) [L15] float z; [L16] __uint32_t r, hx; [L17] __int32_t ix, s, q, m, t, i; [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (x) [L22] EXPR gf_u.word [L22] (ix) = gf_u.word [L24] hx = ix & 0x7fffffff [L26] COND TRUE !((hx) < 0x7f800000L) [L27] return x * x + x; [L103] RET, EXPR __ieee754_sqrtf(x) [L103] float res = __ieee754_sqrtf(x); [L106] CALL, EXPR isinf_float(res) [L83] __int32_t ix; [L85] ieee_float_shape_type gf_u; [L86] gf_u.value = (x) [L87] EXPR gf_u.word [L87] (ix) = gf_u.word [L89] ix &= 0x7fffffff [L90] return ((ix) == 0x7f800000L); [L106] RET, EXPR isinf_float(res) [L106] COND TRUE !isinf_float(res) [L107] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 117 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 27 SDslu, 93 SDs, 0 SdLazy, 127 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred 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: No data available, 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...