/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/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:06:14,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:06:14,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:06:14,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:06:14,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:06:14,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:06:14,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:06:14,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:06:14,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:06:14,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:06:14,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:06:14,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:06:14,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:06:14,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:06:14,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:06:14,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:06:14,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:06:14,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:06:14,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:06:14,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:06:14,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:06:14,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:06:14,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:06:14,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:06:14,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 13:06:14,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:06:14,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:06:14,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:06:14,418 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 13:06:14,441 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:06:14,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:06:14,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:06:14,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:06:14,443 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:06:14,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:06:14,444 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:06:14,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:06:14,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:06:14,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:06:14,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:06:14,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:06:14,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:06:14,447 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:06:14,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:06:14,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:06:14,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:06:14,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:06:14,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:06:14,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:06:14,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:06:14,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:06:14,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:06:14,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:06:14,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:06:14,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:06:14,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:14,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:06:14,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:06:14,450 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 13:06:14,734 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:06:14,746 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:06:14,750 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:06:14,751 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:06:14,751 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:06:14,752 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-20 13:06:14,812 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c505450/5297d623d8ad425b952b9076bdd8c7bc/FLAGf032c767f [2020-07-20 13:06:15,275 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:06:15,276 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-20 13:06:15,285 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c505450/5297d623d8ad425b952b9076bdd8c7bc/FLAGf032c767f [2020-07-20 13:06:15,632 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c505450/5297d623d8ad425b952b9076bdd8c7bc [2020-07-20 13:06:15,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:06:15,646 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:06:15,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:06:15,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:06:15,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:06:15,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:06:15" (1/1) ... [2020-07-20 13:06:15,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ab17ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:15, skipping insertion in model container [2020-07-20 13:06:15,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:06:15" (1/1) ... [2020-07-20 13:06:15,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:06:15,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:06:15,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:06:15,930 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:06:16,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:06:16,091 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:06:16,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:16 WrapperNode [2020-07-20 13:06:16,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:06:16,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:06:16,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:06:16,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:06:16,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:16" (1/1) ... [2020-07-20 13:06:16,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:16" (1/1) ... [2020-07-20 13:06:16,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:16" (1/1) ... [2020-07-20 13:06:16,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:16" (1/1) ... [2020-07-20 13:06:16,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:16" (1/1) ... [2020-07-20 13:06:16,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:16" (1/1) ... [2020-07-20 13:06:16,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:16" (1/1) ... [2020-07-20 13:06:16,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:06:16,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:06:16,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:06:16,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:06:16,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:16" (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 13:06:16,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:06:16,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:06:16,211 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-07-20 13:06:16,211 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-07-20 13:06:16,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:06:16,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:06:16,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-20 13:06:16,212 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-07-20 13:06:16,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:06:16,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 13:06:16,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:06:16,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:06:16,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 13:06:16,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:06:16,213 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-07-20 13:06:16,214 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:06:16,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:06:16,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-20 13:06:16,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:06:16,699 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:06:16,699 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-20 13:06:16,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:06:16 BoogieIcfgContainer [2020-07-20 13:06:16,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:06:16,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:06:16,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:06:16,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:06:16,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:06:15" (1/3) ... [2020-07-20 13:06:16,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4cee2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:06:16, skipping insertion in model container [2020-07-20 13:06:16,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:16" (2/3) ... [2020-07-20 13:06:16,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4cee2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:06:16, skipping insertion in model container [2020-07-20 13:06:16,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:06:16" (3/3) ... [2020-07-20 13:06:16,712 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-07-20 13:06:16,723 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:06:16,731 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:06:16,745 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:06:16,775 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:06:16,775 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:06:16,776 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:06:16,776 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:06:16,776 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:06:16,776 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:06:16,776 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:06:16,777 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:06:16,797 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-07-20 13:06:16,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 13:06:16,804 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:16,805 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 13:06:16,805 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:16,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:16,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-07-20 13:06:16,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:16,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805167371] [2020-07-20 13:06:16,819 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 13:06:16,942 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:06:16,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:06:16,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 13:06:16,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:06:16,975 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 13:06:16,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:06:16,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805167371] [2020-07-20 13:06:16,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:06:16,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 13:06:16,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564027715] [2020-07-20 13:06:16,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 13:06:16,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:06:16,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 13:06:16,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:06:16,998 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2020-07-20 13:06:17,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:06:17,031 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-07-20 13:06:17,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 13:06:17,033 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-20 13:06:17,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:06:17,044 INFO L225 Difference]: With dead ends: 112 [2020-07-20 13:06:17,044 INFO L226 Difference]: Without dead ends: 55 [2020-07-20 13:06:17,049 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 13:06:17,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-20 13:06:17,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-07-20 13:06:17,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-20 13:06:17,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-07-20 13:06:17,096 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-07-20 13:06:17,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:06:17,096 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-07-20 13:06:17,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 13:06:17,097 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-07-20 13:06:17,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 13:06:17,098 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:17,098 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 13:06:17,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:17,310 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:17,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:17,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-07-20 13:06:17,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:17,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052445729] [2020-07-20 13:06:17,313 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 13:06:17,457 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:06:17,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:06:17,457 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:06:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:06:17,498 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:06:17,547 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:06:17,547 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:06:17,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:17,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:06:17 BoogieIcfgContainer [2020-07-20 13:06:17,802 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:06:17,805 INFO L168 Benchmark]: Toolchain (without parser) took 2159.46 ms. Allocated memory was 142.1 MB in the beginning and 200.8 MB in the end (delta: 58.7 MB). Free memory was 99.2 MB in the beginning and 95.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 62.1 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:17,806 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 142.1 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-20 13:06:17,807 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.40 ms. Allocated memory was 142.1 MB in the beginning and 200.8 MB in the end (delta: 58.7 MB). Free memory was 98.8 MB in the beginning and 177.4 MB in the end (delta: -78.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:17,808 INFO L168 Benchmark]: Boogie Preprocessor took 59.67 ms. Allocated memory is still 200.8 MB. Free memory was 177.4 MB in the beginning and 174.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:17,809 INFO L168 Benchmark]: RCFGBuilder took 551.87 ms. Allocated memory is still 200.8 MB. Free memory was 174.6 MB in the beginning and 146.7 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:17,810 INFO L168 Benchmark]: TraceAbstraction took 1097.01 ms. Allocated memory is still 200.8 MB. Free memory was 146.0 MB in the beginning and 95.9 MB in the end (delta: 50.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:17,814 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 142.1 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 444.40 ms. Allocated memory was 142.1 MB in the beginning and 200.8 MB in the end (delta: 58.7 MB). Free memory was 98.8 MB in the beginning and 177.4 MB in the end (delta: -78.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.67 ms. Allocated memory is still 200.8 MB. Free memory was 177.4 MB in the beginning and 174.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 551.87 ms. Allocated memory is still 200.8 MB. Free memory was 174.6 MB in the beginning and 146.7 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1097.01 ms. Allocated memory is still 200.8 MB. Free memory was 146.0 MB in the beginning and 95.9 MB in the end (delta: 50.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=2, \old(Zero_fmod)=5, \old(Zero_fmod)=6, one_fmod=1, Zero_fmod={30614:0}] [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; VAL [one_fmod=1, x=3, Zero_fmod={30614:0}] [L129] CALL isfinite_float(x) VAL [\old(x)=3, one_fmod=1, Zero_fmod={30614:0}] [L109] __int32_t ix; VAL [\old(x)=3, one_fmod=1, x=3, Zero_fmod={30614:0}] [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); VAL [\old(x)=3, \result=1, ix=0, one_fmod=1, x=3, Zero_fmod={30614:0}] [L129] RET isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=3, Zero_fmod={30614:0}] [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=3, \old(y)=5, one_fmod=1, Zero_fmod={30614:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=3, \old(y)=5, one_fmod=1, x=3, y=5, Zero_fmod={30614:0}] [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff VAL [\old(x)=3, \old(y)=5, one_fmod=1, sx=1142, x=3, y=5, Zero_fmod={30614:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [\old(x)=3, \old(y)=5, hx=0, hy=2139095041, one_fmod=1, sx=1142, x=3, y=5, Zero_fmod={30614:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=7, one_fmod=1, x=3, y=5, Zero_fmod={30614:0}] [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x VAL [one_fmod=1, res=7, x=3, y=5, Zero_fmod={30614:0}] [L135] __VERIFIER_error() VAL [one_fmod=1, res=7, x=3, y=5, Zero_fmod={30614:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 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: 76 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=60occurred 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...