/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 --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 03:19:44,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:19:44,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:19:44,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 03:19:44,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 03:19:44,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 03:19:44,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 03:19:44,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 03:19:44,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 03:19:44,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 03:19:44,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 03:19:44,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 03:19:44,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:19:44,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:19:44,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:19:44,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:19:44,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:19:44,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:19:44,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:19:44,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:19:44,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:19:44,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:19:44,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:19:44,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:19:44,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 03:19:44,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:19:44,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:19:44,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:19:44,621 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 [2020-07-20 03:19:44,635 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:19:44,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:19:44,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:19:44,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:19:44,636 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:19:44,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:19:44,637 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:19:44,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:19:44,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:19:44,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:19:44,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:19:44,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:19:44,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:19:44,638 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:19:44,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:19:44,638 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:19:44,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:19:44,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:19:44,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:19:44,639 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:19:44,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:19:44,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:19:44,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:19:44,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:19:44,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:19:44,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:19:44,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:19:44,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:19:44,641 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:19:44,641 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:19:44,908 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:19:44,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:19:44,924 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:19:44,926 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:19:44,926 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:19:44,927 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052b.c [2020-07-20 03:19:44,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/832444bad/f990fb1e37764deda6db9811b2546e8c/FLAGf702bce3c [2020-07-20 03:19:45,372 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:19:45,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1052b.c [2020-07-20 03:19:45,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/832444bad/f990fb1e37764deda6db9811b2546e8c/FLAGf702bce3c [2020-07-20 03:19:45,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/832444bad/f990fb1e37764deda6db9811b2546e8c [2020-07-20 03:19:45,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:19:45,830 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:19:45,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:19:45,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:19:45,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:19:45,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:19:45" (1/1) ... [2020-07-20 03:19:45,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a5cfc36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:45, skipping insertion in model container [2020-07-20 03:19:45,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:19:45" (1/1) ... [2020-07-20 03:19:45,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:19:45,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:19:46,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:19:46,047 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:19:46,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:19:46,198 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:19:46,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:46 WrapperNode [2020-07-20 03:19:46,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:19:46,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:19:46,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:19:46,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:19:46,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:46" (1/1) ... [2020-07-20 03:19:46,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:46" (1/1) ... [2020-07-20 03:19:46,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:46" (1/1) ... [2020-07-20 03:19:46,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:46" (1/1) ... [2020-07-20 03:19:46,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:46" (1/1) ... [2020-07-20 03:19:46,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:46" (1/1) ... [2020-07-20 03:19:46,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:46" (1/1) ... [2020-07-20 03:19:46,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:19:46,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:19:46,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:19:46,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:19:46,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:46" (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 [2020-07-20 03:19:46,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:19:46,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:19:46,326 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-07-20 03:19:46,326 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-07-20 03:19:46,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:19:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:19:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-07-20 03:19:46,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 03:19:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 03:19:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 03:19:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 03:19:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 03:19:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 03:19:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-07-20 03:19:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:19:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:19:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:19:46,726 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:19:46,726 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-20 03:19:46,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:19:46 BoogieIcfgContainer [2020-07-20 03:19:46,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:19:46,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:19:46,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:19:46,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:19:46,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:19:45" (1/3) ... [2020-07-20 03:19:46,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460565d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:19:46, skipping insertion in model container [2020-07-20 03:19:46,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:46" (2/3) ... [2020-07-20 03:19:46,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460565d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:19:46, skipping insertion in model container [2020-07-20 03:19:46,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:19:46" (3/3) ... [2020-07-20 03:19:46,740 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052b.c [2020-07-20 03:19:46,752 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:19:46,760 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 03:19:46,776 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 03:19:46,802 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:19:46,803 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:19:46,803 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:19:46,803 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:19:46,803 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:19:46,803 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:19:46,804 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:19:46,804 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:19:46,825 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-07-20 03:19:46,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 03:19:46,832 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:19:46,834 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] [2020-07-20 03:19:46,834 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:19:46,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:19:46,841 INFO L82 PathProgramCache]: Analyzing trace with hash -305625155, now seen corresponding path program 1 times [2020-07-20 03:19:46,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:19:46,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763618831] [2020-07-20 03:19:46,852 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5c3f3ddf [2020-07-20 03:19:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:47,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:19:47,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763618831] [2020-07-20 03:19:47,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:19:47,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 03:19:47,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935814992] [2020-07-20 03:19:47,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 03:19:47,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:19:47,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 03:19:47,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 03:19:47,193 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-07-20 03:19:47,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:19:47,425 INFO L93 Difference]: Finished difference Result 76 states and 107 transitions. [2020-07-20 03:19:47,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 03:19:47,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-20 03:19:47,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:19:47,438 INFO L225 Difference]: With dead ends: 76 [2020-07-20 03:19:47,439 INFO L226 Difference]: Without dead ends: 38 [2020-07-20 03:19:47,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:19:47,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-20 03:19:47,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-07-20 03:19:47,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-20 03:19:47,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-07-20 03:19:47,499 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 24 [2020-07-20 03:19:47,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:19:47,500 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-07-20 03:19:47,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 03:19:47,500 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-07-20 03:19:47,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 03:19:47,502 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:19:47,502 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] [2020-07-20 03:19:47,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:19:47,503 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:19:47,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:19:47,504 INFO L82 PathProgramCache]: Analyzing trace with hash -231212118, now seen corresponding path program 1 times [2020-07-20 03:19:47,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:19:47,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889146959] [2020-07-20 03:19:47,506 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5c3f3ddf [2020-07-20 03:19:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:19:47,704 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:19:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:19:47,811 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:19:47,842 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 03:19:47,842 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 03:19:47,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 03:19:47,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:19:47 BoogieIcfgContainer [2020-07-20 03:19:47,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:19:47,906 INFO L168 Benchmark]: Toolchain (without parser) took 2074.56 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 104.3 MB in the beginning and 104.5 MB in the end (delta: -193.6 kB). Peak memory consumption was 63.2 MB. Max. memory is 7.1 GB. [2020-07-20 03:19:47,908 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 03:19:47,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.79 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.9 MB in the beginning and 182.9 MB in the end (delta: -79.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-07-20 03:19:47,911 INFO L168 Benchmark]: Boogie Preprocessor took 49.99 ms. Allocated memory is still 204.5 MB. Free memory was 182.9 MB in the beginning and 180.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-07-20 03:19:47,912 INFO L168 Benchmark]: RCFGBuilder took 481.05 ms. Allocated memory is still 204.5 MB. Free memory was 180.6 MB in the beginning and 160.1 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-07-20 03:19:47,914 INFO L168 Benchmark]: TraceAbstraction took 1169.48 ms. Allocated memory is still 204.5 MB. Free memory was 159.4 MB in the beginning and 104.5 MB in the end (delta: 54.9 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2020-07-20 03:19:47,925 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 367.79 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.9 MB in the beginning and 182.9 MB in the end (delta: -79.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.99 ms. Allocated memory is still 204.5 MB. Free memory was 182.9 MB in the beginning and 180.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 481.05 ms. Allocated memory is still 204.5 MB. Free memory was 180.6 MB in the beginning and 160.1 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1169.48 ms. Allocated memory is still 204.5 MB. Free memory was 159.4 MB in the beginning and 104.5 MB in the end (delta: 54.9 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 64. Possible FailurePath: [L11] static const float huge_floor = 1.0e30; VAL [\old(huge_floor)=1000000000000000000000000000005, huge_floor=1000000000000000000000000000000] [L75] float x = -1.0f / 0.0f; VAL [huge_floor=1000000000000000000000000000000] [L76] CALL, EXPR floor_float(x) VAL [\old(x)=1000000000000000000000000000009, huge_floor=1000000000000000000000000000000] [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; VAL [\old(x)=1000000000000000000000000000009, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000009] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f VAL [\old(x)=1000000000000000000000000000009, huge_floor=1000000000000000000000000000000, i=18014396353609728, i0=0, j0=2147483264, x=1000000000000000000000000000009] [L23] COND FALSE !(j0 < 23) VAL [\old(x)=1000000000000000000000000000009, huge_floor=1000000000000000000000000000000, i=18014396353609728, i0=0, j0=2147483264, x=1000000000000000000000000000009] [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; VAL [\old(x)=1000000000000000000000000000009, huge_floor=1000000000000000000000000000000, i=18014396353609728, i0=0, j0=2147483264, x=1000000000000000000000000000009] [L76] RET, EXPR floor_float(x) VAL [floor_float(x)=1000000000000000000000000000002, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000009] [L76] float res = floor_float(x); [L79] CALL, EXPR isinf_float(res) VAL [\old(x)=1000000000000000000000000000002, huge_floor=1000000000000000000000000000000] [L58] __int32_t ix; VAL [\old(x)=1000000000000000000000000000002, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000002] [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (ix) = gf_u.word [L64] ix &= 0x7fffffff [L65] return ((ix) == 0x7f800000L); VAL [\old(x)=1000000000000000000000000000002, \result=0, huge_floor=1000000000000000000000000000000, ix=0, x=1000000000000000000000000000002] [L79] RET, EXPR isinf_float(res) VAL [huge_floor=1000000000000000000000000000000, isinf_float(res)=0, res=1000000000000000000000000000002, x=1000000000000000000000000000009] [L79] COND TRUE !isinf_float(res) [L80] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000, res=1000000000000000000000000000002, x=1000000000000000000000000000009] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 39 SDslu, 5 SDs, 0 SdLazy, 49 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1357 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...