/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 DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -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 19:14:56,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 19:14:56,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 19:14:56,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 19:14:56,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 19:14:56,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 19:14:56,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 19:14:56,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 19:14:56,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 19:14:56,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 19:14:56,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 19:14:56,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 19:14:56,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 19:14:56,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 19:14:56,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 19:14:56,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 19:14:56,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 19:14:56,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 19:14:56,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 19:14:56,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 19:14:56,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 19:14:56,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 19:14:56,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 19:14:56,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 19:14:56,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 19:14:56,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 19:14:56,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 19:14:56,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 19:14:56,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 19:14:56,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 19:14:56,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 19:14:56,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 19:14:56,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 19:14:56,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 19:14:56,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 19:14:56,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 19:14:56,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 19:14:56,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 19:14:56,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 19:14:56,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 19:14:56,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 19:14:56,189 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 19:14:56,203 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 19:14:56,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 19:14:56,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 19:14:56,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 19:14:56,205 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 19:14:56,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 19:14:56,206 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 19:14:56,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 19:14:56,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 19:14:56,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 19:14:56,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 19:14:56,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 19:14:56,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 19:14:56,207 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 19:14:56,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 19:14:56,207 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 19:14:56,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 19:14:56,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 19:14:56,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 19:14:56,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 19:14:56,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 19:14:56,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 19:14:56,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 19:14:56,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 19:14:56,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 19:14:56,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 19:14:56,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:14:56,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 19:14:56,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 19:14:56,210 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 -> 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 -> 2 [2020-07-21 19:14:56,485 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 19:14:56,498 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 19:14:56,502 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 19:14:56,504 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 19:14:56,504 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 19:14:56,505 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-07-21 19:14:56,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b771ae79a/bc6ea7006f1b46cc8302000189a5983b/FLAG6c35e8343 [2020-07-21 19:14:57,098 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 19:14:57,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-07-21 19:14:57,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b771ae79a/bc6ea7006f1b46cc8302000189a5983b/FLAG6c35e8343 [2020-07-21 19:14:57,392 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b771ae79a/bc6ea7006f1b46cc8302000189a5983b [2020-07-21 19:14:57,401 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 19:14:57,403 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 19:14:57,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 19:14:57,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 19:14:57,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 19:14:57,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:14:57" (1/1) ... [2020-07-21 19:14:57,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@416ba85b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:57, skipping insertion in model container [2020-07-21 19:14:57,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:14:57" (1/1) ... [2020-07-21 19:14:57,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 19:14:57,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 19:14:57,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:14:57,623 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 19:14:57,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:14:57,791 INFO L208 MainTranslator]: Completed translation [2020-07-21 19:14:57,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:57 WrapperNode [2020-07-21 19:14:57,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 19:14:57,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 19:14:57,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 19:14:57,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 19:14:57,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:57" (1/1) ... [2020-07-21 19:14:57,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:57" (1/1) ... [2020-07-21 19:14:57,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:57" (1/1) ... [2020-07-21 19:14:57,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:57" (1/1) ... [2020-07-21 19:14:57,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:57" (1/1) ... [2020-07-21 19:14:57,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:57" (1/1) ... [2020-07-21 19:14:57,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:57" (1/1) ... [2020-07-21 19:14:57,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 19:14:57,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 19:14:57,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 19:14:57,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 19:14:57,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:57" (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 19:14:57,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 19:14:57,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 19:14:57,911 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 19:14:57,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-07-21 19:14:57,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 19:14:57,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 19:14:57,911 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 19:14:57,911 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-07-21 19:14:57,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 19:14:57,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 19:14:57,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 19:14:57,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 19:14:57,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 19:14:57,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 19:14:57,913 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 19:14:57,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 19:14:57,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 19:14:58,273 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 19:14:58,274 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-21 19:14:58,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:14:58 BoogieIcfgContainer [2020-07-21 19:14:58,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 19:14:58,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 19:14:58,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 19:14:58,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 19:14:58,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:14:57" (1/3) ... [2020-07-21 19:14:58,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58bb147a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:14:58, skipping insertion in model container [2020-07-21 19:14:58,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:57" (2/3) ... [2020-07-21 19:14:58,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58bb147a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:14:58, skipping insertion in model container [2020-07-21 19:14:58,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:14:58" (3/3) ... [2020-07-21 19:14:58,287 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-07-21 19:14:58,298 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 19:14:58,306 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 19:14:58,321 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 19:14:58,346 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 19:14:58,346 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 19:14:58,346 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 19:14:58,347 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 19:14:58,347 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 19:14:58,347 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 19:14:58,347 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 19:14:58,347 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 19:14:58,367 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-07-21 19:14:58,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 19:14:58,374 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:14:58,375 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 19:14:58,376 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:14:58,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:14:58,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-07-21 19:14:58,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:14:58,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867251875] [2020-07-21 19:14:58,407 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 19:14:58,506 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:14:58,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:14:58,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 19:14:58,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:14:58,543 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 19:14:58,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:14:58,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867251875] [2020-07-21 19:14:58,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:14:58,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 19:14:58,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480101140] [2020-07-21 19:14:58,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 19:14:58,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:14:58,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 19:14:58,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 19:14:58,570 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2020-07-21 19:14:58,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:14:58,599 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-07-21 19:14:58,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 19:14:58,600 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2020-07-21 19:14:58,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:14:58,611 INFO L225 Difference]: With dead ends: 86 [2020-07-21 19:14:58,612 INFO L226 Difference]: Without dead ends: 43 [2020-07-21 19:14:58,615 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 19:14:58,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-21 19:14:58,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-07-21 19:14:58,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-21 19:14:58,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-07-21 19:14:58,659 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-07-21 19:14:58,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:14:58,660 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-07-21 19:14:58,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 19:14:58,660 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-07-21 19:14:58,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 19:14:58,662 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:14:58,662 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 19:14:58,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:14:58,877 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:14:58,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:14:58,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-07-21 19:14:58,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:14:58,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70993183] [2020-07-21 19:14:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 19:14:58,960 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:14:58,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 19:14:58,961 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 19:14:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 19:14:58,980 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 19:14:59,003 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 19:14:59,004 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 19:14:59,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:14:59,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 07:14:59 BoogieIcfgContainer [2020-07-21 19:14:59,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 19:14:59,256 INFO L168 Benchmark]: Toolchain (without parser) took 1852.64 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 101.0 MB in the beginning and 113.8 MB in the end (delta: -12.8 MB). Peak memory consumption was 44.3 MB. Max. memory is 7.1 GB. [2020-07-21 19:14:59,257 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.2 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 19:14:59,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.08 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 100.6 MB in the beginning and 180.6 MB in the end (delta: -80.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-07-21 19:14:59,259 INFO L168 Benchmark]: Boogie Preprocessor took 47.82 ms. Allocated memory is still 202.4 MB. Free memory was 180.6 MB in the beginning and 178.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-07-21 19:14:59,259 INFO L168 Benchmark]: RCFGBuilder took 437.83 ms. Allocated memory is still 202.4 MB. Free memory was 178.0 MB in the beginning and 156.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-07-21 19:14:59,260 INFO L168 Benchmark]: TraceAbstraction took 972.97 ms. Allocated memory is still 202.4 MB. Free memory was 155.5 MB in the beginning and 114.5 MB in the end (delta: 41.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. [2020-07-21 19:14:59,264 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.2 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 388.08 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 100.6 MB in the beginning and 180.6 MB in the end (delta: -80.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.82 ms. Allocated memory is still 202.4 MB. Free memory was 180.6 MB in the beginning and 178.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 437.83 ms. Allocated memory is still 202.4 MB. Free memory was 178.0 MB in the beginning and 156.1 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 972.97 ms. Allocated memory is still 202.4 MB. Free memory was 155.5 MB in the beginning and 114.5 MB in the end (delta: 41.0 MB). Peak memory consumption was 41.0 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: 0.8s, 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, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 78 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...