/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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 10:55:55,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 10:55:55,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 10:55:55,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 10:55:55,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 10:55:55,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 10:55:55,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 10:55:55,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 10:55:55,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 10:55:55,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 10:55:55,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 10:55:55,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 10:55:55,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 10:55:55,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 10:55:55,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 10:55:55,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 10:55:55,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 10:55:55,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 10:55:55,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 10:55:55,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 10:55:55,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 10:55:55,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 10:55:55,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 10:55:55,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 10:55:55,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 10:55:55,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 10:55:55,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 10:55:55,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 10:55:55,166 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 10:55:55,200 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 10:55:55,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 10:55:55,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 10:55:55,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 10:55:55,202 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 10:55:55,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 10:55:55,206 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 10:55:55,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 10:55:55,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 10:55:55,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 10:55:55,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 10:55:55,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 10:55:55,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 10:55:55,207 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 10:55:55,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 10:55:55,208 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 10:55:55,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 10:55:55,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 10:55:55,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 10:55:55,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 10:55:55,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 10:55:55,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 10:55:55,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 10:55:55,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 10:55:55,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 10:55:55,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 10:55:55,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 10:55:55,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 10:55:55,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 10:55:55,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 10:55:55,488 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 10:55:55,501 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 10:55:55,505 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 10:55:55,506 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 10:55:55,507 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 10:55:55,507 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-07 10:55:55,570 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6416f95c1/bdc4fc5361544aca91d59e44ee5c748d/FLAG617aa6972 [2020-07-07 10:55:56,024 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 10:55:56,025 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-07 10:55:56,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6416f95c1/bdc4fc5361544aca91d59e44ee5c748d/FLAG617aa6972 [2020-07-07 10:55:56,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6416f95c1/bdc4fc5361544aca91d59e44ee5c748d [2020-07-07 10:55:56,413 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 10:55:56,415 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 10:55:56,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 10:55:56,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 10:55:56,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 10:55:56,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 10:55:56" (1/1) ... [2020-07-07 10:55:56,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c57cf41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:56, skipping insertion in model container [2020-07-07 10:55:56,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 10:55:56" (1/1) ... [2020-07-07 10:55:56,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 10:55:56,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 10:55:56,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 10:55:56,681 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 10:55:56,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 10:55:56,874 INFO L208 MainTranslator]: Completed translation [2020-07-07 10:55:56,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:55:56 WrapperNode [2020-07-07 10:55:56,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 10:55:56,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 10:55:56,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 10:55:56,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 10:55:56,889 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 10:55:56,889 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 10:55:56,900 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 10:55:56,901 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 10:55:56,916 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 10:55:56,925 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 10:55:56,928 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 10:55:56,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 10:55:56,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 10:55:56,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 10:55:56,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 10:55:56,933 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 10:55:57,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 10:55:57,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 10:55:57,001 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-07-07 10:55:57,001 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-07-07 10:55:57,002 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 10:55:57,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 10:55:57,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-07 10:55:57,003 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-07-07 10:55:57,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 10:55:57,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-07 10:55:57,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 10:55:57,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 10:55:57,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-07 10:55:57,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 10:55:57,005 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-07-07 10:55:57,006 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 10:55:57,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 10:55:57,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-07 10:55:57,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 10:55:57,503 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 10:55:57,504 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-07 10:55:57,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 10:55:57 BoogieIcfgContainer [2020-07-07 10:55:57,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 10:55:57,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 10:55:57,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 10:55:57,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 10:55:57,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 10:55:56" (1/3) ... [2020-07-07 10:55:57,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e0d17e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 10:55:57, skipping insertion in model container [2020-07-07 10:55:57,518 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 10:55:57,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e0d17e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 10:55:57, skipping insertion in model container [2020-07-07 10:55:57,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 10:55:57" (3/3) ... [2020-07-07 10:55:57,521 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-07-07 10:55:57,532 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 10:55:57,540 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 10:55:57,554 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 10:55:57,579 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 10:55:57,580 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 10:55:57,580 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 10:55:57,580 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 10:55:57,581 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 10:55:57,581 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 10:55:57,581 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 10:55:57,581 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 10:55:57,603 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-07-07 10:55:57,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-07 10:55:57,610 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:55:57,611 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] [2020-07-07 10:55:57,612 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:55:57,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:55:57,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-07-07 10:55:57,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:55:57,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867231678] [2020-07-07 10:55:57,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:55:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:55:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:55:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:55:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:55:57,874 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 10:55:57,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867231678] [2020-07-07 10:55:57,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:55:57,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 10:55:57,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865551192] [2020-07-07 10:55:57,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 10:55:57,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:55:57,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 10:55:57,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 10:55:57,900 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-07-07 10:55:58,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:55:58,136 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-07-07 10:55:58,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 10:55:58,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-07-07 10:55:58,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:55:58,150 INFO L225 Difference]: With dead ends: 112 [2020-07-07 10:55:58,150 INFO L226 Difference]: Without dead ends: 55 [2020-07-07 10:55:58,155 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 [2020-07-07 10:55:58,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-07 10:55:58,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-07-07 10:55:58,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-07 10:55:58,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-07-07 10:55:58,206 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-07-07 10:55:58,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:55:58,207 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-07-07 10:55:58,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 10:55:58,207 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-07-07 10:55:58,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-07 10:55:58,209 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:55:58,209 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] [2020-07-07 10:55:58,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 10:55:58,210 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:55:58,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:55:58,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-07-07 10:55:58,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:55:58,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194582228] [2020-07-07 10:55:58,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:55:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 10:55:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 10:55:58,538 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 10:55:58,538 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 10:55:58,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 10:55:58,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 10:55:58 BoogieIcfgContainer [2020-07-07 10:55:58,577 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 10:55:58,583 INFO L168 Benchmark]: Toolchain (without parser) took 2166.15 ms. Allocated memory was 136.8 MB in the beginning and 231.7 MB in the end (delta: 94.9 MB). Free memory was 99.7 MB in the beginning and 198.2 MB in the end (delta: -98.5 MB). Peak memory consumption was 88.6 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:58,584 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 10:55:58,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 459.11 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 99.5 MB in the beginning and 178.0 MB in the end (delta: -78.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:58,586 INFO L168 Benchmark]: Boogie Preprocessor took 56.42 ms. Allocated memory is still 201.3 MB. Free memory was 178.0 MB in the beginning and 175.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:58,587 INFO L168 Benchmark]: RCFGBuilder took 577.10 ms. Allocated memory is still 201.3 MB. Free memory was 175.3 MB in the beginning and 147.4 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:58,588 INFO L168 Benchmark]: TraceAbstraction took 1066.94 ms. Allocated memory was 201.3 MB in the beginning and 231.7 MB in the end (delta: 30.4 MB). Free memory was 146.7 MB in the beginning and 198.2 MB in the end (delta: -51.5 MB). Peak memory consumption was 71.1 MB. Max. memory is 7.1 GB. [2020-07-07 10:55:58,592 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 136.8 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 459.11 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 99.5 MB in the beginning and 178.0 MB in the end (delta: -78.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.42 ms. Allocated memory is still 201.3 MB. Free memory was 178.0 MB in the beginning and 175.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 577.10 ms. Allocated memory is still 201.3 MB. Free memory was 175.3 MB in the beginning and 147.4 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1066.94 ms. Allocated memory was 201.3 MB in the beginning and 231.7 MB in the end (delta: 30.4 MB). Free memory was 146.7 MB in the beginning and 198.2 MB in the end (delta: -51.5 MB). Peak memory consumption was 71.1 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 someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=8589934606, \old(Zero_fmod)=8589934599, \old(Zero_fmod)=8589934602, one_fmod=1, Zero_fmod={3:0}] [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; VAL [one_fmod=1, x=8589934596, Zero_fmod={3:0}] [L129] CALL isfinite_float(x) VAL [\old(x)=8589934596, one_fmod=1, Zero_fmod={3:0}] [L109] __int32_t ix; VAL [\old(x)=8589934596, one_fmod=1, x=8589934596, Zero_fmod={3:0}] [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); VAL [\old(x)=8589934596, \result=1, ix=2139095039, one_fmod=1, x=8589934596, Zero_fmod={3:0}] [L129] RET isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=8589934596, Zero_fmod={3:0}] [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=8589934596, \old(y)=8589934595, one_fmod=1, Zero_fmod={3:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=8589934596, \old(y)=8589934595, one_fmod=1, x=8589934596, y=8589934595, 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)=8589934596, \old(y)=8589934595, one_fmod=1, sx=-2, x=8589934596, y=8589934595, Zero_fmod={3:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [\old(x)=8589934596, \old(y)=8589934595, hx=2139095040, hy=0, one_fmod=1, sx=-2, x=8589934596, y=8589934595, Zero_fmod={3:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=8589934594, one_fmod=1, x=8589934596, y=8589934595, Zero_fmod={3:0}] [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x VAL [one_fmod=1, res=8589934594, x=8589934596, y=8589934595, Zero_fmod={3:0}] [L135] __VERIFIER_error() VAL [one_fmod=1, res=8589934594, x=8589934596, y=8589934595, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 6 SDslu, 63 SDs, 0 SdLazy, 78 SolverSat, 6 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 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...