/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 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:07:31,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 21:07:31,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 21:07:31,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 21:07:31,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 21:07:31,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 21:07:31,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 21:07:31,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 21:07:31,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 21:07:31,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 21:07:31,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 21:07:31,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 21:07:31,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:07:31,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:07:31,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:07:31,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:07:31,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:07:31,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:07:31,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:07:31,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:07:31,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:07:31,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:07:31,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:07:31,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:07:31,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 21:07:31,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:07:31,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:07:31,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:07:31,521 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 21:07:31,545 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:07:31,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:07:31,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:07:31,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:07:31,548 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:07:31,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:07:31,548 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:07:31,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:07:31,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:07:31,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:07:31,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:07:31,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:07:31,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:07:31,551 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:07:31,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:07:31,551 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:07:31,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:07:31,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:07:31,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:07:31,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:07:31,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:07:31,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:07:31,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:07:31,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:07:31,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:07:31,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:07:31,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:31,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:07:31,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:07:31,554 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 -> 4 [2020-07-20 21:07:31,836 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:07:31,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:07:31,852 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:07:31,853 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:07:31,854 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:07:31,855 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-20 21:07:31,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef3fa9d9d/f239f8d60a9c408eaecc39a8ddb06f3a/FLAG84f252770 [2020-07-20 21:07:32,321 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:07:32,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-20 21:07:32,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef3fa9d9d/f239f8d60a9c408eaecc39a8ddb06f3a/FLAG84f252770 [2020-07-20 21:07:32,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef3fa9d9d/f239f8d60a9c408eaecc39a8ddb06f3a [2020-07-20 21:07:32,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:07:32,703 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:07:32,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:07:32,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:07:32,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:07:32,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:07:32" (1/1) ... [2020-07-20 21:07:32,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@754e19e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:32, skipping insertion in model container [2020-07-20 21:07:32,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:07:32" (1/1) ... [2020-07-20 21:07:32,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:07:32,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:07:32,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:07:32,972 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:07:33,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:07:33,205 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:07:33,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33 WrapperNode [2020-07-20 21:07:33,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:07:33,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:07:33,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:07:33,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:07:33,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33" (1/1) ... [2020-07-20 21:07:33,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33" (1/1) ... [2020-07-20 21:07:33,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33" (1/1) ... [2020-07-20 21:07:33,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33" (1/1) ... [2020-07-20 21:07:33,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33" (1/1) ... [2020-07-20 21:07:33,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33" (1/1) ... [2020-07-20 21:07:33,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33" (1/1) ... [2020-07-20 21:07:33,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:07:33,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:07:33,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:07:33,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:07:33,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33" (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 21:07:33,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:07:33,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:07:33,361 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-20 21:07:33,361 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-20 21:07:33,361 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-07-20 21:07:33,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:07:33,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:07:33,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 21:07:33,362 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-20 21:07:33,362 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-20 21:07:33,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 21:07:33,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 21:07:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 21:07:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 21:07:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 21:07:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 21:07:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-07-20 21:07:33,363 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:07:33,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:07:33,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-20 21:07:33,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:07:34,015 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:07:34,015 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-20 21:07:34,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:07:34 BoogieIcfgContainer [2020-07-20 21:07:34,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:07:34,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:07:34,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:07:34,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:07:34,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:07:32" (1/3) ... [2020-07-20 21:07:34,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd68f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:07:34, skipping insertion in model container [2020-07-20 21:07:34,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:33" (2/3) ... [2020-07-20 21:07:34,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd68f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:07:34, skipping insertion in model container [2020-07-20 21:07:34,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:07:34" (3/3) ... [2020-07-20 21:07:34,029 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-07-20 21:07:34,039 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:07:34,048 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:07:34,061 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:07:34,082 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:07:34,083 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:07:34,083 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:07:34,083 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:07:34,083 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:07:34,083 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:07:34,083 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:07:34,084 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:07:34,102 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-20 21:07:34,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 21:07:34,109 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:07:34,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:07:34,111 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:07:34,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:07:34,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-07-20 21:07:34,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:07:34,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85943404] [2020-07-20 21:07:34,128 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 [2020-07-20 21:07:34,336 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:07:34,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:07:34,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 21:07:34,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:07:34,379 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 21:07:34,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:07:34,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85943404] [2020-07-20 21:07:34,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:07:34,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 21:07:34,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739849859] [2020-07-20 21:07:34,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 21:07:34,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:07:34,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 21:07:34,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 21:07:34,404 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2020-07-20 21:07:34,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:07:34,438 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-07-20 21:07:34,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 21:07:34,440 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-20 21:07:34,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:07:34,451 INFO L225 Difference]: With dead ends: 138 [2020-07-20 21:07:34,451 INFO L226 Difference]: Without dead ends: 68 [2020-07-20 21:07:34,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 21:07:34,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-20 21:07:34,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-20 21:07:34,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-20 21:07:34,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-07-20 21:07:34,504 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-07-20 21:07:34,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:07:34,505 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-07-20 21:07:34,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 21:07:34,505 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-07-20 21:07:34,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 21:07:34,506 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:07:34,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:07:34,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:34,723 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:07:34,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:07:34,725 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-07-20 21:07:34,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:07:34,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135818273] [2020-07-20 21:07:34,726 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 [2020-07-20 21:07:34,850 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:07:34,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 21:07:34,851 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 21:07:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 21:07:34,903 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 21:07:34,936 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 21:07:34,936 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 21:07:35,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:35,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:07:35 BoogieIcfgContainer [2020-07-20 21:07:35,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 21:07:35,193 INFO L168 Benchmark]: Toolchain (without parser) took 2490.04 ms. Allocated memory was 138.9 MB in the beginning and 237.0 MB in the end (delta: 98.0 MB). Free memory was 102.1 MB in the beginning and 199.7 MB in the end (delta: -97.6 MB). Peak memory consumption was 434.8 kB. Max. memory is 7.1 GB. [2020-07-20 21:07:35,194 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 21:07:35,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 501.78 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 101.6 MB in the beginning and 178.8 MB in the end (delta: -77.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:35,196 INFO L168 Benchmark]: Boogie Preprocessor took 67.70 ms. Allocated memory is still 203.4 MB. Free memory was 178.8 MB in the beginning and 176.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:35,197 INFO L168 Benchmark]: RCFGBuilder took 746.08 ms. Allocated memory is still 203.4 MB. Free memory was 176.2 MB in the beginning and 139.4 MB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:35,198 INFO L168 Benchmark]: TraceAbstraction took 1169.00 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 139.4 MB in the beginning and 199.7 MB in the end (delta: -60.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 21:07:35,202 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 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 501.78 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 101.6 MB in the beginning and 178.8 MB in the end (delta: -77.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.70 ms. Allocated memory is still 203.4 MB. Free memory was 178.8 MB in the beginning and 176.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 746.08 ms. Allocated memory is still 203.4 MB. Free memory was 176.2 MB in the beginning and 139.4 MB in the end (delta: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1169.00 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 139.4 MB in the beginning and 199.7 MB in the end (delta: -60.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=2, \old(Zero_fmod)=7, \old(Zero_fmod)=9, one_fmod=1, Zero_fmod={9730:0}] [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) VAL [\old(x)=3, one_fmod=1, Zero_fmod={9730:0}] [L164] __int32_t hx; VAL [\old(x)=3, one_fmod=1, x=3, Zero_fmod={9730:0}] [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=3, \result=-2147483648, hx=2147483647, one_fmod=1, x=3, Zero_fmod={9730:0}] [L183] RET isfinite_double(x) VAL [isfinite_double(x)=-2147483648, one_fmod=1, x=3, Zero_fmod={9730:0}] [L183] COND TRUE isfinite_double(x) [L185] CALL, EXPR fmod_double(x, y) VAL [\old(x)=3, \old(y)=5, one_fmod=1, Zero_fmod={9730:0}] [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [\old(x)=3, \old(y)=5, one_fmod=1, x=3, y=5, Zero_fmod={9730:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [\old(x)=3, \old(y)=5, lx=15, ly=18, one_fmod=1, sx=2446, x=3, y=5, Zero_fmod={9730:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [\old(x)=3, \old(y)=5, hx=0, lx=15, ly=18, one_fmod=1, sx=2446, x=3, y=5, Zero_fmod={9730:0}] [L185] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=8, one_fmod=1, x=3, y=5, Zero_fmod={9730:0}] [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={9730:0}] [L189] __VERIFIER_error() VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={9730:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 102 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...