/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_FUNCTIONS --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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:05:57,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:05:57,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:05:57,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:05:57,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:05:57,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:05:57,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:05:57,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:05:57,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:05:57,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:05:57,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:05:57,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:05:57,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:05:57,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:05:57,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:05:57,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:05:57,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:05:57,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:05:57,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:05:57,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:05:57,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:05:57,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:05:57,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:05:57,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:05:57,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 13:05:57,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:05:57,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:05:57,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:05:57,567 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 13:05:57,604 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:05:57,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:05:57,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:05:57,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:05:57,611 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:05:57,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:05:57,611 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:05:57,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:05:57,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:05:57,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:05:57,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:05:57,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:05:57,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:05:57,612 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:05:57,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:05:57,613 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:05:57,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:05:57,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:05:57,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:05:57,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:05:57,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:05:57,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:05:57,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:05:57,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:05:57,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:05:57,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:05:57,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:05:57,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:05:57,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:05:57,618 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_FUNCTIONS 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 13:05:57,919 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:05:57,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:05:57,936 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:05:57,938 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:05:57,938 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:05:57,939 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-07-20 13:05:58,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4d70145f/eef2f83fad9344559fdb2b24fb175e1f/FLAG537b95e60 [2020-07-20 13:05:58,469 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:05:58,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-07-20 13:05:58,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4d70145f/eef2f83fad9344559fdb2b24fb175e1f/FLAG537b95e60 [2020-07-20 13:05:58,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4d70145f/eef2f83fad9344559fdb2b24fb175e1f [2020-07-20 13:05:58,846 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:05:58,849 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:05:58,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:05:58,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:05:58,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:05:58,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:05:58" (1/1) ... [2020-07-20 13:05:58,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@279cec6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:58, skipping insertion in model container [2020-07-20 13:05:58,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:05:58" (1/1) ... [2020-07-20 13:05:58,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:05:58,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:05:59,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:05:59,180 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:05:59,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:05:59,418 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:05:59,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59 WrapperNode [2020-07-20 13:05:59,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:05:59,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:05:59,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:05:59,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:05:59,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:05:59,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:05:59,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:05:59,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:05:59,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (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 13:05:59,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:05:59,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:05:59,554 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-20 13:05:59,554 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-07-20 13:05:59,554 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:05:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:05:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 13:05:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-20 13:05:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:05:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 13:05:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:05:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:05:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 13:05:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:05:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-07-20 13:05:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:05:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:05:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-20 13:05:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:06:00,110 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:06:00,110 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-20 13:06:00,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:06:00 BoogieIcfgContainer [2020-07-20 13:06:00,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:06:00,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:06:00,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:06:00,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:06:00,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:05:58" (1/3) ... [2020-07-20 13:06:00,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec01a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:06:00, skipping insertion in model container [2020-07-20 13:06:00,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (2/3) ... [2020-07-20 13:06:00,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec01a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:06:00, skipping insertion in model container [2020-07-20 13:06:00,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:06:00" (3/3) ... [2020-07-20 13:06:00,125 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-07-20 13:06:00,137 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:06:00,147 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:06:00,162 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:06:00,200 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:06:00,201 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:06:00,201 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:06:00,201 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:06:00,202 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:06:00,202 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:06:00,202 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:06:00,203 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:06:00,231 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-20 13:06:00,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 13:06:00,240 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:00,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:06:00,242 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:00,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:00,249 INFO L82 PathProgramCache]: Analyzing trace with hash -759211570, now seen corresponding path program 1 times [2020-07-20 13:06:00,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:00,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617905202] [2020-07-20 13:06:00,261 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 13:06:00,390 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:06:00,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:06:00,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 13:06:00,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:06:00,425 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 13:06:00,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:06:00,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617905202] [2020-07-20 13:06:00,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:06:00,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 13:06:00,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106666083] [2020-07-20 13:06:00,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 13:06:00,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:06:00,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 13:06:00,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:06:00,450 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2020-07-20 13:06:00,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:06:00,484 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-07-20 13:06:00,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 13:06:00,485 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-20 13:06:00,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:06:00,496 INFO L225 Difference]: With dead ends: 138 [2020-07-20 13:06:00,497 INFO L226 Difference]: Without dead ends: 68 [2020-07-20 13:06:00,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:06:00,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-20 13:06:00,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-20 13:06:00,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-20 13:06:00,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-07-20 13:06:00,550 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-07-20 13:06:00,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:06:00,550 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-07-20 13:06:00,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 13:06:00,551 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-07-20 13:06:00,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 13:06:00,552 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:00,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:06:00,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:00,767 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:00,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:00,769 INFO L82 PathProgramCache]: Analyzing trace with hash -775583586, now seen corresponding path program 1 times [2020-07-20 13:06:00,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:00,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025723466] [2020-07-20 13:06:00,770 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 13:06:00,937 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:06:00,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:06:00,938 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:06:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:06:01,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:06:01,045 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:06:01,045 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:06:01,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:01,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:06:01 BoogieIcfgContainer [2020-07-20 13:06:01,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:06:01,302 INFO L168 Benchmark]: Toolchain (without parser) took 2453.66 ms. Allocated memory was 140.0 MB in the beginning and 232.8 MB in the end (delta: 92.8 MB). Free memory was 103.8 MB in the beginning and 193.6 MB in the end (delta: -89.8 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:01,303 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 13:06:01,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 565.25 ms. Allocated memory was 140.0 MB in the beginning and 206.6 MB in the end (delta: 66.6 MB). Free memory was 103.4 MB in the beginning and 182.1 MB in the end (delta: -78.7 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:01,305 INFO L168 Benchmark]: Boogie Preprocessor took 69.33 ms. Allocated memory is still 206.6 MB. Free memory was 182.1 MB in the beginning and 179.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:01,306 INFO L168 Benchmark]: RCFGBuilder took 626.80 ms. Allocated memory is still 206.6 MB. Free memory was 179.2 MB in the beginning and 143.1 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:01,307 INFO L168 Benchmark]: TraceAbstraction took 1181.72 ms. Allocated memory was 206.6 MB in the beginning and 232.8 MB in the end (delta: 26.2 MB). Free memory was 142.4 MB in the beginning and 193.6 MB in the end (delta: -51.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 13:06:01,312 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 140.0 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 565.25 ms. Allocated memory was 140.0 MB in the beginning and 206.6 MB in the end (delta: 66.6 MB). Free memory was 103.4 MB in the beginning and 182.1 MB in the end (delta: -78.7 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.33 ms. Allocated memory is still 206.6 MB. Free memory was 182.1 MB in the beginning and 179.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 626.80 ms. Allocated memory is still 206.6 MB. Free memory was 179.2 MB in the beginning and 143.1 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1181.72 ms. Allocated memory was 206.6 MB in the beginning and 232.8 MB in the end (delta: 26.2 MB). Free memory was 142.4 MB in the beginning and 193.6 MB in the end (delta: -51.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=2, \old(Zero_fmod)=10, \old(Zero_fmod)=9, one_fmod=1, Zero_fmod={4:0}] [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) VAL [\old(x)=3, one_fmod=1, Zero_fmod={4:0}] [L161] __int32_t hx; VAL [\old(x)=3, one_fmod=1, x=3, Zero_fmod={4:0}] [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=3, \result=-2147483648, hx=2446, one_fmod=1, x=3, Zero_fmod={4:0}] [L180] RET isfinite_double(x) VAL [isfinite_double(x)=-2147483648, one_fmod=1, x=3, Zero_fmod={4:0}] [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) VAL [\old(x)=3, \old(y)=5, one_fmod=1, Zero_fmod={4:0}] [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; VAL [\old(x)=3, \old(y)=5, one_fmod=1, x=3, y=5, Zero_fmod={4:0}] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff VAL [\old(x)=3, \old(y)=5, lx=18, ly=20, one_fmod=1, sx=18587, x=3, y=5, Zero_fmod={4:0}] [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); VAL [\old(x)=3, \old(y)=5, hx=0, lx=18, ly=20, one_fmod=1, sx=18587, x=3, y=5, Zero_fmod={4:0}] [L182] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=8, one_fmod=1, x=3, y=5, Zero_fmod={4:0}] [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={4:0}] [L186] __VERIFIER_error() VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 100 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...