/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 NUM_VARIABLES --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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 16:27:29,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 16:27:29,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 16:27:29,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 16:27:29,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 16:27:29,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 16:27:29,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 16:27:29,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 16:27:29,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 16:27:29,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 16:27:29,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 16:27:29,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 16:27:29,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 16:27:29,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 16:27:29,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 16:27:29,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 16:27:29,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 16:27:29,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 16:27:29,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 16:27:29,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 16:27:29,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 16:27:29,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 16:27:29,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 16:27:29,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 16:27:29,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 16:27:29,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 16:27:29,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 16:27:29,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 16:27:29,562 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 16:27:29,577 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 16:27:29,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 16:27:29,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 16:27:29,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 16:27:29,579 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 16:27:29,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 16:27:29,579 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 16:27:29,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 16:27:29,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 16:27:29,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 16:27:29,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 16:27:29,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 16:27:29,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 16:27:29,580 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 16:27:29,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 16:27:29,581 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 16:27:29,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 16:27:29,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 16:27:29,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 16:27:29,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 16:27:29,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 16:27:29,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 16:27:29,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 16:27:29,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 16:27:29,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 16:27:29,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 16:27:29,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:29,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 16:27:29,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 16:27:29,583 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 -> NUM_VARIABLES 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 16:27:29,862 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 16:27:29,875 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 16:27:29,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 16:27:29,880 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 16:27:29,881 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 16:27:29,881 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-20 16:27:29,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/656eb1451/0c6cfc0ca4004c35bc6975701f29a29a/FLAGc7cc6a82d [2020-07-20 16:27:30,478 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 16:27:30,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-20 16:27:30,487 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/656eb1451/0c6cfc0ca4004c35bc6975701f29a29a/FLAGc7cc6a82d [2020-07-20 16:27:30,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/656eb1451/0c6cfc0ca4004c35bc6975701f29a29a [2020-07-20 16:27:30,863 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 16:27:30,866 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 16:27:30,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 16:27:30,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 16:27:30,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 16:27:30,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:27:30" (1/1) ... [2020-07-20 16:27:30,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f1e27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:30, skipping insertion in model container [2020-07-20 16:27:30,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:27:30" (1/1) ... [2020-07-20 16:27:30,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 16:27:30,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 16:27:31,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:27:31,277 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 16:27:31,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:27:31,354 INFO L208 MainTranslator]: Completed translation [2020-07-20 16:27:31,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:31 WrapperNode [2020-07-20 16:27:31,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 16:27:31,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 16:27:31,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 16:27:31,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 16:27:31,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:31" (1/1) ... [2020-07-20 16:27:31,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:31" (1/1) ... [2020-07-20 16:27:31,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:31" (1/1) ... [2020-07-20 16:27:31,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:31" (1/1) ... [2020-07-20 16:27:31,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:31" (1/1) ... [2020-07-20 16:27:31,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:31" (1/1) ... [2020-07-20 16:27:31,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:31" (1/1) ... [2020-07-20 16:27:31,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 16:27:31,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 16:27:31,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 16:27:31,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 16:27:31,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:31" (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 16:27:31,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 16:27:31,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 16:27:31,491 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-20 16:27:31,491 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-20 16:27:31,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-20 16:27:31,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 16:27:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 16:27:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 16:27:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-20 16:27:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-20 16:27:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 16:27:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 16:27:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 16:27:31,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 16:27:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 16:27:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 16:27:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-20 16:27:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 16:27:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 16:27:31,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-20 16:27:31,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 16:27:32,121 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 16:27:32,121 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-20 16:27:32,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:27:32 BoogieIcfgContainer [2020-07-20 16:27:32,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 16:27:32,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 16:27:32,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 16:27:32,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 16:27:32,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:27:30" (1/3) ... [2020-07-20 16:27:32,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169a5623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:27:32, skipping insertion in model container [2020-07-20 16:27:32,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:31" (2/3) ... [2020-07-20 16:27:32,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169a5623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:27:32, skipping insertion in model container [2020-07-20 16:27:32,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:27:32" (3/3) ... [2020-07-20 16:27:32,136 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-07-20 16:27:32,147 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 16:27:32,155 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 16:27:32,170 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 16:27:32,196 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 16:27:32,197 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 16:27:32,197 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 16:27:32,197 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 16:27:32,197 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 16:27:32,198 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 16:27:32,198 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 16:27:32,198 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 16:27:32,218 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-07-20 16:27:32,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 16:27:32,226 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:27:32,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:27:32,228 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:27:32,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:27:32,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-07-20 16:27:32,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:27:32,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249014064] [2020-07-20 16:27:32,245 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 16:27:32,356 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:27:32,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:27:32,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 16:27:32,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:27:32,388 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 16:27:32,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:27:32,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249014064] [2020-07-20 16:27:32,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:27:32,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 16:27:32,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279917965] [2020-07-20 16:27:32,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 16:27:32,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:27:32,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 16:27:32,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:27:32,408 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2020-07-20 16:27:32,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:27:32,436 INFO L93 Difference]: Finished difference Result 139 states and 229 transitions. [2020-07-20 16:27:32,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 16:27:32,437 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-07-20 16:27:32,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:27:32,447 INFO L225 Difference]: With dead ends: 139 [2020-07-20 16:27:32,447 INFO L226 Difference]: Without dead ends: 69 [2020-07-20 16:27:32,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 16:27:32,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-20 16:27:32,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-07-20 16:27:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-20 16:27:32,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-07-20 16:27:32,493 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-07-20 16:27:32,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:27:32,494 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-07-20 16:27:32,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 16:27:32,494 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-07-20 16:27:32,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 16:27:32,495 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:27:32,495 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] [2020-07-20 16:27:32,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:32,710 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:27:32,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:27:32,711 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-07-20 16:27:32,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:27:32,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018180829] [2020-07-20 16:27:32,713 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 16:27:32,809 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:27:32,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 16:27:32,810 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:27:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 16:27:32,840 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:27:32,870 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 16:27:32,871 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 16:27:33,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:33,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:27:33 BoogieIcfgContainer [2020-07-20 16:27:33,122 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 16:27:33,125 INFO L168 Benchmark]: Toolchain (without parser) took 2259.23 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 100.3 MB in the beginning and 86.6 MB in the end (delta: 13.7 MB). Peak memory consumption was 78.1 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:33,126 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory is still 119.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 16:27:33,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.41 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 100.3 MB in the beginning and 175.8 MB in the end (delta: -75.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:33,128 INFO L168 Benchmark]: Boogie Preprocessor took 71.82 ms. Allocated memory is still 201.3 MB. Free memory was 175.8 MB in the beginning and 172.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:33,128 INFO L168 Benchmark]: RCFGBuilder took 698.65 ms. Allocated memory is still 201.3 MB. Free memory was 172.8 MB in the beginning and 136.4 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:33,129 INFO L168 Benchmark]: TraceAbstraction took 994.38 ms. Allocated memory is still 201.3 MB. Free memory was 136.4 MB in the beginning and 86.6 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:33,133 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory is still 119.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 485.41 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 100.3 MB in the beginning and 175.8 MB in the end (delta: -75.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.82 ms. Allocated memory is still 201.3 MB. Free memory was 175.8 MB in the beginning and 172.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 698.65 ms. Allocated memory is still 201.3 MB. Free memory was 172.8 MB in the beginning and 136.4 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 994.38 ms. Allocated memory is still 201.3 MB. Free memory was 136.4 MB in the beginning and 86.6 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: 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 bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, 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)=9, \old(Zero_fmod)=7, one_fmod=1, Zero_fmod={2:0}] [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 VAL [one_fmod=1, x=0, y=3, Zero_fmod={2:0}] [L187] CALL, EXPR fmod_double(x, y) VAL [\old(x)=0, \old(y)=3, one_fmod=1, Zero_fmod={2:0}] [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [\old(x)=0, \old(y)=3, one_fmod=1, x=0, y=3, Zero_fmod={2:0}] [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)=0, \old(y)=3, lx=13, ly=17, one_fmod=1, sx=5853, x=0, y=3, Zero_fmod={2:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=3, hx=0, lx=13, ly=17, one_fmod=1, sx=5853, x=0, y=3, Zero_fmod={2:0}] [L187] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=5, one_fmod=1, x=0, y=3, Zero_fmod={2:0}] [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, res=5, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=3, Zero_fmod={2:0}] [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() VAL [one_fmod=1, res=5, x=0, y=3, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 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: 102 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 40 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 85 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...