/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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:02:04,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:02:04,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:02:04,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:02:04,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:02:04,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:02:04,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:02:04,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:02:04,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:02:04,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:02:04,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:02:04,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:02:04,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:02:04,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:02:04,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:02:04,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:02:04,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:02:04,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:02:04,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:02:04,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:02:04,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:02:04,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:02:04,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:02:04,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:02:04,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:02:04,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:02:04,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:02:04,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:02:04,623 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 22:02:04,659 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:02:04,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:02:04,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:02:04,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:02:04,662 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:02:04,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:02:04,663 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:02:04,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:02:04,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:02:04,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:02:04,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:02:04,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:02:04,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:02:04,665 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:02:04,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:02:04,665 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:02:04,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:02:04,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:02:04,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:02:04,667 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:02:04,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:02:04,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:02:04,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:02:04,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:02:04,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:02:04,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:02:04,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:04,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:02:04,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:02:04,672 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 22:02:04,983 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:02:05,003 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:02:05,006 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:02:05,009 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:02:05,009 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:02:05,010 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-21 22:02:05,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bd56ed24/eac1543b42f34872b15a01a0aa3367a6/FLAG7f7da7d42 [2020-07-21 22:02:05,517 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:02:05,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-21 22:02:05,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bd56ed24/eac1543b42f34872b15a01a0aa3367a6/FLAG7f7da7d42 [2020-07-21 22:02:05,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bd56ed24/eac1543b42f34872b15a01a0aa3367a6 [2020-07-21 22:02:05,894 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:02:05,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:02:05,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:02:05,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:02:05,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:02:05,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:02:05" (1/1) ... [2020-07-21 22:02:05,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e48011d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:05, skipping insertion in model container [2020-07-21 22:02:05,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:02:05" (1/1) ... [2020-07-21 22:02:05,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:02:05,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:02:06,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:02:06,184 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:02:06,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:02:06,361 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:02:06,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:06 WrapperNode [2020-07-21 22:02:06,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:02:06,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:02:06,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:02:06,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:02:06,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:06" (1/1) ... [2020-07-21 22:02:06,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:06" (1/1) ... [2020-07-21 22:02:06,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:06" (1/1) ... [2020-07-21 22:02:06,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:06" (1/1) ... [2020-07-21 22:02:06,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:06" (1/1) ... [2020-07-21 22:02:06,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:06" (1/1) ... [2020-07-21 22:02:06,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:06" (1/1) ... [2020-07-21 22:02:06,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:02:06,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:02:06,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:02:06,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:02:06,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:06" (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 22:02:06,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:02:06,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:02:06,490 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 22:02:06,491 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-21 22:02:06,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-21 22:02:06,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:02:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:02:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-21 22:02:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 22:02:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-21 22:02:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 22:02:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 22:02:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 22:02:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 22:02:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 22:02:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 22:02:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-21 22:02:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:02:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:02:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-21 22:02:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:02:07,117 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:02:07,118 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-21 22:02:07,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:07 BoogieIcfgContainer [2020-07-21 22:02:07,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:02:07,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:02:07,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:02:07,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:02:07,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:02:05" (1/3) ... [2020-07-21 22:02:07,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfb2eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:02:07, skipping insertion in model container [2020-07-21 22:02:07,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:06" (2/3) ... [2020-07-21 22:02:07,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfb2eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:02:07, skipping insertion in model container [2020-07-21 22:02:07,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:07" (3/3) ... [2020-07-21 22:02:07,132 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-07-21 22:02:07,143 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:02:07,152 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:02:07,168 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:02:07,195 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:02:07,195 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:02:07,196 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:02:07,196 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:02:07,196 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:02:07,196 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:02:07,197 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:02:07,197 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:02:07,218 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-07-21 22:02:07,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 22:02:07,226 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:07,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:02:07,228 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:07,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:07,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-07-21 22:02:07,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:07,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438559808] [2020-07-21 22:02:07,245 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 [2020-07-21 22:02:07,355 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:02:07,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:02:07,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 22:02:07,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:02:07,386 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 22:02:07,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:02:07,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438559808] [2020-07-21 22:02:07,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:02:07,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 22:02:07,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112465553] [2020-07-21 22:02:07,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 22:02:07,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:02:07,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 22:02:07,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 22:02:07,412 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2020-07-21 22:02:07,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:02:07,445 INFO L93 Difference]: Finished difference Result 139 states and 229 transitions. [2020-07-21 22:02:07,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 22:02:07,447 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-07-21 22:02:07,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:02:07,463 INFO L225 Difference]: With dead ends: 139 [2020-07-21 22:02:07,464 INFO L226 Difference]: Without dead ends: 69 [2020-07-21 22:02:07,468 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 [2020-07-21 22:02:07,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-21 22:02:07,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-07-21 22:02:07,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-21 22:02:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-07-21 22:02:07,520 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-07-21 22:02:07,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:02:07,521 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-07-21 22:02:07,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 22:02:07,521 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-07-21 22:02:07,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 22:02:07,522 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:07,523 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] [2020-07-21 22:02:07,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:07,736 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:07,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:07,737 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-07-21 22:02:07,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:07,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75432856] [2020-07-21 22:02:07,739 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 22:02:07,831 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:02:07,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 22:02:07,832 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:02:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 22:02:07,875 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:02:07,906 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 22:02:07,907 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 22:02:08,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:08,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:02:08 BoogieIcfgContainer [2020-07-21 22:02:08,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:02:08,164 INFO L168 Benchmark]: Toolchain (without parser) took 2267.94 ms. Allocated memory was 146.3 MB in the beginning and 234.4 MB in the end (delta: 88.1 MB). Free memory was 103.5 MB in the beginning and 199.3 MB in the end (delta: -95.9 MB). Peak memory consumption was 77.0 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:08,165 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 146.3 MB. Free memory is still 122.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 22:02:08,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 464.57 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 103.5 MB in the beginning and 179.8 MB in the end (delta: -76.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:08,167 INFO L168 Benchmark]: Boogie Preprocessor took 66.42 ms. Allocated memory is still 204.5 MB. Free memory was 179.8 MB in the beginning and 176.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:08,168 INFO L168 Benchmark]: RCFGBuilder took 692.83 ms. Allocated memory is still 204.5 MB. Free memory was 176.9 MB in the beginning and 140.5 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:08,169 INFO L168 Benchmark]: TraceAbstraction took 1037.70 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 139.6 MB in the beginning and 199.3 MB in the end (delta: -59.8 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:08,173 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 146.3 MB. Free memory is still 122.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 464.57 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 103.5 MB in the beginning and 179.8 MB in the end (delta: -76.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.42 ms. Allocated memory is still 204.5 MB. Free memory was 179.8 MB in the beginning and 176.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 692.83 ms. Allocated memory is still 204.5 MB. Free memory was 176.9 MB in the beginning and 140.5 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1037.70 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 139.6 MB in the beginning and 199.3 MB in the end (delta: -59.8 MB). Peak memory consumption was 54.9 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={3:0}] [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={3:0}] [L187] CALL, EXPR fmod_double(x, y) VAL [\old(x)=0, \old(y)=3, one_fmod=1, Zero_fmod={3:0}] [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={3:0}] [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=4294967295, x=0, y=3, Zero_fmod={3:0}] [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=4294967295, x=0, y=3, Zero_fmod={3:0}] [L187] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=5, one_fmod=1, x=0, y=3, Zero_fmod={3:0}] [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={3:0}] [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={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 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: 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, 31 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 77 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...