/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 10:55:54,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 10:55:54,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 10:55:54,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 10:55:54,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 10:55:54,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 10:55:54,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 10:55:54,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 10:55:54,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 10:55:54,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 10:55:54,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 10:55:54,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 10:55:54,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 10:55:54,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 10:55:54,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 10:55:54,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 10:55:54,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 10:55:54,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 10:55:54,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 10:55:54,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 10:55:54,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 10:55:54,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 10:55:54,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 10:55:54,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 10:55:54,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 10:55:54,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 10:55:54,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 10:55:54,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 10:55:54,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-07 10:55:54,672 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 10:55:54,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 10:55:54,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 10:55:54,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 10:55:54,674 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 10:55:54,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 10:55:54,675 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 10:55:54,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 10:55:54,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 10:55:54,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 10:55:54,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 10:55:54,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 10:55:54,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 10:55:54,676 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 10:55:54,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 10:55:54,676 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 10:55:54,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 10:55:54,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 10:55:54,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 10:55:54,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 10:55:54,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 10:55:54,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 10:55:54,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 10:55:54,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 10:55:54,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 10:55:54,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 10:55:54,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 10:55:54,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 10:55:54,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 10:55:54,679 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 10:55:54,949 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 10:55:54,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 10:55:54,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 10:55:54,965 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 10:55:54,965 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 10:55:54,966 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-07-07 10:55:55,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5b6020fc/65965303bd314e4697a5a2554a3f49b7/FLAG2e2ba0e96 [2020-07-07 10:55:55,547 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 10:55:55,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-07-07 10:55:55,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5b6020fc/65965303bd314e4697a5a2554a3f49b7/FLAG2e2ba0e96 [2020-07-07 10:55:55,916 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5b6020fc/65965303bd314e4697a5a2554a3f49b7 [2020-07-07 10:55:55,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 10:55:55,929 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 10:55:55,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 10:55:55,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 10:55:55,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 10:55:55,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 10:55:55" (1/1) ... [2020-07-07 10:55:55,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd0d620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:55, skipping insertion in model container [2020-07-07 10:55:55,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 10:55:55" (1/1) ... [2020-07-07 10:55:55,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 10:55:55,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 10:55:56,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 10:55:56,191 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 10:55:56,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 10:55:56,388 INFO L208 MainTranslator]: Completed translation [2020-07-07 10:55:56,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:56 WrapperNode [2020-07-07 10:55:56,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 10:55:56,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 10:55:56,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 10:55:56,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 10:55:56,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:56" (1/1) ... [2020-07-07 10:55:56,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:56" (1/1) ... [2020-07-07 10:55:56,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:56" (1/1) ... [2020-07-07 10:55:56,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:56" (1/1) ... [2020-07-07 10:55:56,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:56" (1/1) ... [2020-07-07 10:55:56,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:56" (1/1) ... [2020-07-07 10:55:56,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:56" (1/1) ... [2020-07-07 10:55:56,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 10:55:56,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 10:55:56,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 10:55:56,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 10:55:56,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 10:55:56,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 10:55:56,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 10:55:56,507 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-07-07 10:55:56,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-07-07 10:55:56,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 10:55:56,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 10:55:56,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-07 10:55:56,508 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-07-07 10:55:56,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 10:55:56,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-07 10:55:56,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 10:55:56,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 10:55:56,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-07 10:55:56,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 10:55:56,510 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-07-07 10:55:56,510 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 10:55:56,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 10:55:56,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-07 10:55:56,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 10:55:56,977 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 10:55:56,978 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-07 10:55:56,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 10:55:56 BoogieIcfgContainer [2020-07-07 10:55:56,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 10:55:56,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 10:55:56,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 10:55:56,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 10:55:56,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 10:55:55" (1/3) ... [2020-07-07 10:55:56,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e542ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 10:55:56, skipping insertion in model container [2020-07-07 10:55:56,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:56" (2/3) ... [2020-07-07 10:55:56,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e542ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 10:55:56, skipping insertion in model container [2020-07-07 10:55:56,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 10:55:56" (3/3) ... [2020-07-07 10:55:56,994 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-07-07 10:55:57,004 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 10:55:57,012 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 10:55:57,023 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 10:55:57,044 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 10:55:57,044 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 10:55:57,044 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 10:55:57,044 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 10:55:57,044 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 10:55:57,045 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 10:55:57,045 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 10:55:57,045 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 10:55:57,063 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-07-07 10:55:57,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 10:55:57,070 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:55:57,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:55:57,071 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:55:57,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:55:57,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2020-07-07 10:55:57,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:55:57,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631689358] [2020-07-07 10:55:57,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:55:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:55:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:55:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:55:57,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 10:55:57,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631689358] [2020-07-07 10:55:57,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:55:57,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 10:55:57,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146874842] [2020-07-07 10:55:57,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 10:55:57,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:55:57,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 10:55:57,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 10:55:57,355 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2020-07-07 10:55:57,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:55:57,707 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2020-07-07 10:55:57,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 10:55:57,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-07-07 10:55:57,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:55:57,723 INFO L225 Difference]: With dead ends: 116 [2020-07-07 10:55:57,724 INFO L226 Difference]: Without dead ends: 56 [2020-07-07 10:55:57,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 10:55:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-07 10:55:57,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-07-07 10:55:57,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-07 10:55:57,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-07-07 10:55:57,780 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2020-07-07 10:55:57,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:55:57,781 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-07-07 10:55:57,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 10:55:57,782 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-07-07 10:55:57,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 10:55:57,783 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:55:57,783 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] [2020-07-07 10:55:57,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 10:55:57,784 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:55:57,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:55:57,784 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2020-07-07 10:55:57,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:55:57,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373173809] [2020-07-07 10:55:57,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:55:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 10:55:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 10:55:58,004 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 10:55:58,004 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 10:55:58,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 10:55:58,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 10:55:58 BoogieIcfgContainer [2020-07-07 10:55:58,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 10:55:58,084 INFO L168 Benchmark]: Toolchain (without parser) took 2153.06 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 101.9 MB in the beginning and 89.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 77.6 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:58,085 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 120.7 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 10:55:58,088 INFO L168 Benchmark]: CACSL2BoogieTranslator took 458.10 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 101.7 MB in the beginning and 180.2 MB in the end (delta: -78.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:58,089 INFO L168 Benchmark]: Boogie Preprocessor took 58.86 ms. Allocated memory is still 203.4 MB. Free memory was 179.5 MB in the beginning and 177.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:58,089 INFO L168 Benchmark]: RCFGBuilder took 535.55 ms. Allocated memory is still 203.4 MB. Free memory was 177.5 MB in the beginning and 149.0 MB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:58,091 INFO L168 Benchmark]: TraceAbstraction took 1095.15 ms. Allocated memory is still 203.4 MB. Free memory was 148.3 MB in the beginning and 89.3 MB in the end (delta: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:58,101 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 120.7 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 458.10 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 101.7 MB in the beginning and 180.2 MB in the end (delta: -78.6 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.86 ms. Allocated memory is still 203.4 MB. Free memory was 179.5 MB in the beginning and 177.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 535.55 ms. Allocated memory is still 203.4 MB. Free memory was 177.5 MB in the beginning and 149.0 MB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1095.15 ms. Allocated memory is still 203.4 MB. Free memory was 148.3 MB in the beginning and 89.3 MB in the end (delta: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=12884901897, \old(Zero_fmod)=12884901896, \old(Zero_fmod)=12884901891, one_fmod=1, Zero_fmod={3:0}] [L126] float x = 0.0f; [L127] float y = __VERIFIER_nondet_float(); [L129] COND TRUE (y < 0.0f || y > 0.0f) VAL [one_fmod=1, x=0, y=12884901892, Zero_fmod={3:0}] [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=0, \old(y)=12884901892, one_fmod=1, Zero_fmod={3:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=12884901892, one_fmod=1, x=0, y=12884901892, Zero_fmod={3:0}] [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=12884901892, one_fmod=1, sx=-2, x=0, y=12884901892, Zero_fmod={3:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=12884901892, hx=2139095040, hy=0, one_fmod=1, sx=-2, x=0, y=12884901892, Zero_fmod={3:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=12884901893, one_fmod=1, x=0, y=12884901892, Zero_fmod={3:0}] [L131] float res = fmod_float(x, y); [L134] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_fmod=1, res=12884901893, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=12884901892, Zero_fmod={3:0}] [L134] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L135] __VERIFIER_error() VAL [one_fmod=1, res=12884901893, x=0, y=12884901892, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 14 SDslu, 61 SDs, 0 SdLazy, 80 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 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...