/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_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:01:58,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:01:58,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:01:58,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:01:58,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:01:58,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:01:58,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:01:58,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:01:58,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:01:58,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:01:58,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:01:58,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:01:58,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:01:58,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:01:58,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:01:58,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:01:58,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:01:58,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:01:58,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:01:58,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:01:58,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:01:58,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:01:58,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:01:58,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:01:58,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:01:59,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:01:59,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:01:59,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:01:59,008 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 22:01:59,033 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:01:59,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:01:59,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:01:59,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:01:59,035 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:01:59,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:01:59,037 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:01:59,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:01:59,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:01:59,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:01:59,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:01:59,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:01:59,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:01:59,039 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:01:59,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:01:59,039 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:01:59,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:01:59,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:01:59,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:01:59,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:01:59,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:01:59,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:01:59,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:01:59,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:01:59,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:01:59,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:01:59,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:01:59,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:01:59,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:01:59,045 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 22:01:59,320 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:01:59,332 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:01:59,336 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:01:59,337 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:01:59,338 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:01:59,338 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-07-21 22:01:59,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef879d698/e43b9313b1884832a5c3c25193a3cbb7/FLAGb73b447ae [2020-07-21 22:01:59,892 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:01:59,894 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-07-21 22:01:59,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef879d698/e43b9313b1884832a5c3c25193a3cbb7/FLAGb73b447ae [2020-07-21 22:02:00,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef879d698/e43b9313b1884832a5c3c25193a3cbb7 [2020-07-21 22:02:00,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:02:00,277 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:02:00,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:02:00,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:02:00,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:02:00,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:02:00" (1/1) ... [2020-07-21 22:02:00,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c78abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:00, skipping insertion in model container [2020-07-21 22:02:00,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:02:00" (1/1) ... [2020-07-21 22:02:00,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:02:00,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:02:00,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:02:00,563 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:02:00,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:02:00,720 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:02:00,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:00 WrapperNode [2020-07-21 22:02:00,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:02:00,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:02:00,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:02:00,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:02:00,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:00" (1/1) ... [2020-07-21 22:02:00,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:00" (1/1) ... [2020-07-21 22:02:00,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:00" (1/1) ... [2020-07-21 22:02:00,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:00" (1/1) ... [2020-07-21 22:02:00,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:00" (1/1) ... [2020-07-21 22:02:00,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:00" (1/1) ... [2020-07-21 22:02:00,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:00" (1/1) ... [2020-07-21 22:02:00,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:02:00,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:02:00,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:02:00,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:02:00,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:00" (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 22:02:00,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:02:00,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:02:00,830 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-07-21 22:02:00,830 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 22:02:00,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:02:00,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:02:00,831 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-07-21 22:02:00,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 22:02:00,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 22:02:00,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 22:02:00,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 22:02:00,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 22:02:00,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 22:02:00,832 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 22:02:00,832 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:02:00,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:02:00,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:02:01,200 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:02:01,201 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-21 22:02:01,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:01 BoogieIcfgContainer [2020-07-21 22:02:01,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:02:01,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:02:01,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:02:01,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:02:01,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:02:00" (1/3) ... [2020-07-21 22:02:01,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2456306e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:02:01, skipping insertion in model container [2020-07-21 22:02:01,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:00" (2/3) ... [2020-07-21 22:02:01,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2456306e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:02:01, skipping insertion in model container [2020-07-21 22:02:01,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:01" (3/3) ... [2020-07-21 22:02:01,215 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-07-21 22:02:01,228 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:02:01,236 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:02:01,254 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:02:01,283 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:02:01,283 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:02:01,283 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:02:01,284 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:02:01,284 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:02:01,284 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:02:01,284 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:02:01,284 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:02:01,306 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-07-21 22:02:01,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 22:02:01,313 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:01,314 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 22:02:01,315 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:01,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:01,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-07-21 22:02:01,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:01,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293674963] [2020-07-21 22:02:01,338 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 22:02:01,481 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:02:01,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:02:01,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 22:02:01,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:02:01,541 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 22:02:01,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:02:01,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293674963] [2020-07-21 22:02:01,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:02:01,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 22:02:01,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585702655] [2020-07-21 22:02:01,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 22:02:01,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:02:01,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 22:02:01,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 22:02:01,573 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2020-07-21 22:02:01,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:02:01,602 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-07-21 22:02:01,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 22:02:01,604 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2020-07-21 22:02:01,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:02:01,616 INFO L225 Difference]: With dead ends: 86 [2020-07-21 22:02:01,617 INFO L226 Difference]: Without dead ends: 43 [2020-07-21 22:02:01,621 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 22:02:01,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-21 22:02:01,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-07-21 22:02:01,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-21 22:02:01,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-07-21 22:02:01,670 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-07-21 22:02:01,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:02:01,671 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-07-21 22:02:01,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 22:02:01,672 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-07-21 22:02:01,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 22:02:01,673 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:01,673 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 22:02:01,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:01,887 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:01,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:01,888 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-07-21 22:02:01,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:01,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702614935] [2020-07-21 22:02:01,889 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 22:02:01,981 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:02:01,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 22:02:01,982 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:02:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 22:02:02,006 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:02:02,034 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 22:02:02,035 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 22:02:02,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:02,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:02:02 BoogieIcfgContainer [2020-07-21 22:02:02,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:02:02,285 INFO L168 Benchmark]: Toolchain (without parser) took 2009.26 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 102.9 MB in the beginning and 114.1 MB in the end (delta: -11.2 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:02,286 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 22:02:02,287 INFO L168 Benchmark]: CACSL2BoogieTranslator took 442.78 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 102.4 MB in the beginning and 180.8 MB in the end (delta: -78.4 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:02,288 INFO L168 Benchmark]: Boogie Preprocessor took 45.84 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 178.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:02,289 INFO L168 Benchmark]: RCFGBuilder took 439.58 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 156.0 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:02,290 INFO L168 Benchmark]: TraceAbstraction took 1074.50 ms. Allocated memory is still 202.9 MB. Free memory was 155.3 MB in the beginning and 114.1 MB in the end (delta: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:02,294 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 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 442.78 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 102.4 MB in the beginning and 180.8 MB in the end (delta: -78.4 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.84 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 178.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 439.58 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 156.0 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1074.50 ms. Allocated memory is still 202.9 MB. Free memory was 155.3 MB in the beginning and 114.1 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: 93]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 80. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; VAL [\old(huge_floor)=0, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L88] double x = 0.0 / 0.0; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L89] CALL, EXPR floor_double(x) VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2147483647, i1=11797, x=4] [L26] COND TRUE j0 < 20 VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2147483647, i1=11797, j0=0, x=4] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2147483647, i1=11797, j0=0, x=4] [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; VAL [\old(x)=4, \result=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2147483647, i1=11797, j0=0, x=4] [L89] RET, EXPR floor_double(x) VAL [floor_double(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L89] double res = floor_double(x); [L92] CALL, EXPR isnan_double(res) VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L80] return x != x; VAL [\old(x)=4, \result=0, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L92] RET, EXPR isnan_double(res) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, isnan_double(res)=0, res=4, x=4] [L92] COND TRUE !isnan_double(res) [L93] __VERIFIER_error() VAL [huge_floor=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, 0.1s 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...