/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 0.1.25-267fbe0 [2020-07-17 11:43:50,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 11:43:50,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 11:43:50,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 11:43:50,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 11:43:50,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 11:43:50,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 11:43:50,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 11:43:50,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 11:43:50,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 11:43:50,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 11:43:50,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 11:43:50,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 11:43:50,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 11:43:50,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 11:43:50,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 11:43:50,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 11:43:50,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 11:43:50,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 11:43:50,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 11:43:50,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 11:43:50,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 11:43:50,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 11:43:50,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 11:43:50,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 11:43:50,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 11:43:50,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 11:43:50,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 11:43:50,970 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 [2020-07-17 11:43:50,995 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 11:43:50,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 11:43:50,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 11:43:50,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 11:43:50,998 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 11:43:50,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 11:43:50,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 11:43:50,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 11:43:50,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 11:43:50,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 11:43:51,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 11:43:51,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 11:43:51,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 11:43:51,002 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 11:43:51,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 11:43:51,002 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 11:43:51,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 11:43:51,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 11:43:51,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 11:43:51,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 11:43:51,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 11:43:51,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 11:43:51,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 11:43:51,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 11:43:51,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 11:43:51,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 11:43:51,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 11:43:51,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 11:43:51,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 11:43:51,005 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 11:43:51,292 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 11:43:51,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 11:43:51,309 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 11:43:51,311 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 11:43:51,311 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 11:43:51,312 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-17 11:43:51,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3babbfe7/ddabde1ad68d479e9ea10f207f41a49f/FLAG61cc6e3da [2020-07-17 11:43:51,820 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 11:43:51,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-17 11:43:51,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3babbfe7/ddabde1ad68d479e9ea10f207f41a49f/FLAG61cc6e3da [2020-07-17 11:43:52,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3babbfe7/ddabde1ad68d479e9ea10f207f41a49f [2020-07-17 11:43:52,224 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 11:43:52,227 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 11:43:52,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 11:43:52,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 11:43:52,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 11:43:52,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 11:43:52" (1/1) ... [2020-07-17 11:43:52,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@120e009c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:52, skipping insertion in model container [2020-07-17 11:43:52,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 11:43:52" (1/1) ... [2020-07-17 11:43:52,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 11:43:52,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 11:43:52,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 11:43:52,505 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 11:43:52,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 11:43:52,653 INFO L208 MainTranslator]: Completed translation [2020-07-17 11:43:52,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:52 WrapperNode [2020-07-17 11:43:52,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 11:43:52,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 11:43:52,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 11:43:52,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 11:43:52,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:52" (1/1) ... [2020-07-17 11:43:52,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:52" (1/1) ... [2020-07-17 11:43:52,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:52" (1/1) ... [2020-07-17 11:43:52,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:52" (1/1) ... [2020-07-17 11:43:52,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:52" (1/1) ... [2020-07-17 11:43:52,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:52" (1/1) ... [2020-07-17 11:43:52,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:52" (1/1) ... [2020-07-17 11:43:52,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 11:43:52,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 11:43:52,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 11:43:52,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 11:43:52,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:52" (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 [2020-07-17 11:43:52,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 11:43:52,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 11:43:52,772 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-07-17 11:43:52,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-07-17 11:43:52,772 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 11:43:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 11:43:52,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-17 11:43:52,773 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-07-17 11:43:52,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 11:43:52,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-17 11:43:52,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 11:43:52,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 11:43:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-17 11:43:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 11:43:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-07-17 11:43:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 11:43:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 11:43:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-17 11:43:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 11:43:53,191 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 11:43:53,191 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-17 11:43:53,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 11:43:53 BoogieIcfgContainer [2020-07-17 11:43:53,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 11:43:53,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 11:43:53,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 11:43:53,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 11:43:53,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 11:43:52" (1/3) ... [2020-07-17 11:43:53,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ffcda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 11:43:53, skipping insertion in model container [2020-07-17 11:43:53,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:52" (2/3) ... [2020-07-17 11:43:53,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ffcda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 11:43:53, skipping insertion in model container [2020-07-17 11:43:53,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 11:43:53" (3/3) ... [2020-07-17 11:43:53,203 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-07-17 11:43:53,213 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 11:43:53,220 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 11:43:53,236 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 11:43:53,259 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 11:43:53,260 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 11:43:53,260 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 11:43:53,260 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 11:43:53,260 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 11:43:53,260 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 11:43:53,261 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 11:43:53,261 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 11:43:53,283 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-07-17 11:43:53,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-17 11:43:53,294 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:43:53,295 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] [2020-07-17 11:43:53,296 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:43:53,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:43:53,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-07-17 11:43:53,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:43:53,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747538304] [2020-07-17 11:43:53,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:43:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:43:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:43:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:43:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:43:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:43:53,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747538304] [2020-07-17 11:43:53,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:43:53,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 11:43:53,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881338494] [2020-07-17 11:43:53,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 11:43:53,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:43:53,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 11:43:53,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 11:43:53,621 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-07-17 11:43:53,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:43:53,942 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-07-17 11:43:53,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 11:43:53,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-07-17 11:43:53,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:43:53,961 INFO L225 Difference]: With dead ends: 112 [2020-07-17 11:43:53,962 INFO L226 Difference]: Without dead ends: 55 [2020-07-17 11:43:53,969 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 [2020-07-17 11:43:53,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-17 11:43:54,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-07-17 11:43:54,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-17 11:43:54,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-07-17 11:43:54,045 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-07-17 11:43:54,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:43:54,046 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-07-17 11:43:54,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 11:43:54,046 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-07-17 11:43:54,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-17 11:43:54,049 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:43:54,050 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] [2020-07-17 11:43:54,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 11:43:54,051 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:43:54,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:43:54,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-07-17 11:43:54,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:43:54,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979861601] [2020-07-17 11:43:54,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:43:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 11:43:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 11:43:54,323 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 11:43:54,323 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 11:43:54,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 11:43:54,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 11:43:54 BoogieIcfgContainer [2020-07-17 11:43:54,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 11:43:54,390 INFO L168 Benchmark]: Toolchain (without parser) took 2162.38 ms. Allocated memory was 139.5 MB in the beginning and 234.4 MB in the end (delta: 94.9 MB). Free memory was 103.5 MB in the beginning and 196.0 MB in the end (delta: -92.4 MB). Peak memory consumption was 84.0 MB. Max. memory is 7.1 GB. [2020-07-17 11:43:54,392 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-17 11:43:54,394 INFO L168 Benchmark]: CACSL2BoogieTranslator took 423.06 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 103.1 MB in the beginning and 180.3 MB in the end (delta: -77.2 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-07-17 11:43:54,395 INFO L168 Benchmark]: Boogie Preprocessor took 55.89 ms. Allocated memory is still 203.4 MB. Free memory was 180.3 MB in the beginning and 177.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-17 11:43:54,396 INFO L168 Benchmark]: RCFGBuilder took 485.24 ms. Allocated memory is still 203.4 MB. Free memory was 177.7 MB in the beginning and 149.2 MB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2020-07-17 11:43:54,398 INFO L168 Benchmark]: TraceAbstraction took 1189.63 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 148.5 MB in the beginning and 196.0 MB in the end (delta: -47.4 MB). Peak memory consumption was 65.0 MB. Max. memory is 7.1 GB. [2020-07-17 11:43:54,408 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 423.06 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 103.1 MB in the beginning and 180.3 MB in the end (delta: -77.2 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.89 ms. Allocated memory is still 203.4 MB. Free memory was 180.3 MB in the beginning and 177.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 485.24 ms. Allocated memory is still 203.4 MB. Free memory was 177.7 MB in the beginning and 149.2 MB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1189.63 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 148.5 MB in the beginning and 196.0 MB in the end (delta: -47.4 MB). Peak memory consumption was 65.0 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 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)=8589934602, \old(Zero_fmod)=8589934599, 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: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, 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, 0.1s 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...