/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 00:30:50,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 00:30:50,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 00:30:50,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 00:30:50,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 00:30:50,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 00:30:50,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 00:30:50,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 00:30:50,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 00:30:50,046 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 00:30:50,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 00:30:50,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 00:30:50,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 00:30:50,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 00:30:50,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 00:30:50,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 00:30:50,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 00:30:50,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 00:30:50,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 00:30:50,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 00:30:50,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 00:30:50,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 00:30:50,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 00:30:50,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 00:30:50,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 00:30:50,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 00:30:50,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 00:30:50,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 00:30:50,075 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 [2020-07-21 00:30:50,089 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 00:30:50,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 00:30:50,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 00:30:50,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 00:30:50,091 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 00:30:50,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 00:30:50,092 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 00:30:50,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 00:30:50,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 00:30:50,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 00:30:50,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 00:30:50,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 00:30:50,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 00:30:50,093 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 00:30:50,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 00:30:50,093 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 00:30:50,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 00:30:50,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 00:30:50,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 00:30:50,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 00:30:50,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 00:30:50,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 00:30:50,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 00:30:50,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 00:30:50,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 00:30:50,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 00:30:50,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:50,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 00:30:50,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 00:30:50,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS 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 [2020-07-21 00:30:50,404 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 00:30:50,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 00:30:50,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 00:30:50,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 00:30:50,424 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 00:30:50,425 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-07-21 00:30:50,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b90185563/f280750060974f28a27b753efb075fef/FLAG5a16ee1dd [2020-07-21 00:30:50,995 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 00:30:50,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-07-21 00:30:51,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b90185563/f280750060974f28a27b753efb075fef/FLAG5a16ee1dd [2020-07-21 00:30:51,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b90185563/f280750060974f28a27b753efb075fef [2020-07-21 00:30:51,415 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 00:30:51,419 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 00:30:51,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 00:30:51,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 00:30:51,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 00:30:51,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:30:51" (1/1) ... [2020-07-21 00:30:51,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@778246e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:51, skipping insertion in model container [2020-07-21 00:30:51,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:30:51" (1/1) ... [2020-07-21 00:30:51,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 00:30:51,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 00:30:51,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:30:51,661 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 00:30:51,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:30:51,794 INFO L208 MainTranslator]: Completed translation [2020-07-21 00:30:51,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:51 WrapperNode [2020-07-21 00:30:51,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 00:30:51,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 00:30:51,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 00:30:51,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 00:30:51,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:51" (1/1) ... [2020-07-21 00:30:51,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:51" (1/1) ... [2020-07-21 00:30:51,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:51" (1/1) ... [2020-07-21 00:30:51,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:51" (1/1) ... [2020-07-21 00:30:51,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:51" (1/1) ... [2020-07-21 00:30:51,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:51" (1/1) ... [2020-07-21 00:30:51,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:51" (1/1) ... [2020-07-21 00:30:51,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 00:30:51,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 00:30:51,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 00:30:51,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 00:30:51,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:51" (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 [2020-07-21 00:30:51,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 00:30:51,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 00:30:51,906 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 00:30:51,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-07-21 00:30:51,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 00:30:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 00:30:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 00:30:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-07-21 00:30:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 00:30:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 00:30:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 00:30:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 00:30:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 00:30:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 00:30:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 00:30:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 00:30:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 00:30:52,289 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 00:30:52,290 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-21 00:30:52,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:30:52 BoogieIcfgContainer [2020-07-21 00:30:52,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 00:30:52,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 00:30:52,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 00:30:52,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 00:30:52,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:30:51" (1/3) ... [2020-07-21 00:30:52,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e40fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:30:52, skipping insertion in model container [2020-07-21 00:30:52,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:51" (2/3) ... [2020-07-21 00:30:52,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e40fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:30:52, skipping insertion in model container [2020-07-21 00:30:52,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:30:52" (3/3) ... [2020-07-21 00:30:52,303 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-07-21 00:30:52,316 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 00:30:52,329 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 00:30:52,364 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 00:30:52,398 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 00:30:52,398 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 00:30:52,398 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 00:30:52,398 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 00:30:52,399 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 00:30:52,399 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 00:30:52,399 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 00:30:52,399 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 00:30:52,419 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-07-21 00:30:52,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 00:30:52,426 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:30:52,427 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] [2020-07-21 00:30:52,428 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:30:52,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:30:52,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-07-21 00:30:52,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:30:52,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767351447] [2020-07-21 00:30:52,441 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:52,535 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 00:30:52,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:30:52,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 00:30:52,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:30:52,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 00:30:52,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 00:30:52,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767351447] [2020-07-21 00:30:52,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 00:30:52,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 00:30:52,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234435611] [2020-07-21 00:30:52,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 00:30:52,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:30:52,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 00:30:52,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 00:30:52,606 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2020-07-21 00:30:52,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:30:52,636 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-07-21 00:30:52,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 00:30:52,638 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2020-07-21 00:30:52,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:30:52,650 INFO L225 Difference]: With dead ends: 86 [2020-07-21 00:30:52,650 INFO L226 Difference]: Without dead ends: 43 [2020-07-21 00:30:52,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 00:30:52,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-21 00:30:52,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-07-21 00:30:52,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-21 00:30:52,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-07-21 00:30:52,700 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-07-21 00:30:52,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:30:52,700 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-07-21 00:30:52,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 00:30:52,701 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-07-21 00:30:52,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 00:30:52,702 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:30:52,702 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] [2020-07-21 00:30:52,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:52,916 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:30:52,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:30:52,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-07-21 00:30:52,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:30:52,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168178142] [2020-07-21 00:30:52,919 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:53,025 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:30:53,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 00:30:53,026 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 00:30:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 00:30:53,051 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 00:30:53,094 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 00:30:53,095 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 00:30:53,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:53,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:30:53 BoogieIcfgContainer [2020-07-21 00:30:53,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 00:30:53,359 INFO L168 Benchmark]: Toolchain (without parser) took 1941.21 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 112.6 MB in the end (delta: -11.7 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:53,360 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 00:30:53,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.29 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 100.5 MB in the beginning and 178.7 MB in the end (delta: -78.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:53,362 INFO L168 Benchmark]: Boogie Preprocessor took 48.92 ms. Allocated memory is still 200.3 MB. Free memory was 178.7 MB in the beginning and 176.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:53,363 INFO L168 Benchmark]: RCFGBuilder took 450.25 ms. Allocated memory is still 200.3 MB. Free memory was 176.5 MB in the beginning and 154.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:53,364 INFO L168 Benchmark]: TraceAbstraction took 1060.60 ms. Allocated memory is still 200.3 MB. Free memory was 153.8 MB in the beginning and 112.6 MB in the end (delta: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:53,368 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 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 375.29 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 100.5 MB in the beginning and 178.7 MB in the end (delta: -78.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.92 ms. Allocated memory is still 200.3 MB. Free memory was 178.7 MB in the beginning and 176.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 450.25 ms. Allocated memory is still 200.3 MB. Free memory was 176.5 MB in the beginning and 154.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1060.60 ms. Allocated memory is still 200.3 MB. Free memory was 153.8 MB in the beginning and 112.6 MB in the end (delta: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 95]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someBinaryArithmeticDOUBLEoperation at line 90, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; VAL [\old(huge_ceil)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L90] double x = 0.0 / 0.0; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L91] CALL, EXPR ceil_double(x) VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=0, x=4] [L29] COND TRUE j0 < 20 VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=0, j0=0, x=4] [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=0, j0=0, x=4] [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; VAL [\old(x)=4, \result=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=0, j0=0, x=4] [L91] RET, EXPR ceil_double(x) VAL [ceil_double(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L91] double res = ceil_double(x); [L94] CALL, EXPR isnan_double(res) VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L15] return x != x; VAL [\old(x)=4, \result=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L94] RET, EXPR isnan_double(res) VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, isnan_double(res)=0, res=4, x=4] [L94] COND TRUE !isnan_double(res) [L95] __VERIFIER_error() VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=4, x=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 47 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 53 ConjunctsInSsa, 1 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...