/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 DAGSIZE --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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:07:48,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 21:07:48,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 21:07:48,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 21:07:48,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 21:07:48,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 21:07:48,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 21:07:48,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 21:07:48,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 21:07:48,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 21:07:48,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 21:07:48,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 21:07:48,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:07:48,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:07:48,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:07:48,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:07:48,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:07:48,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:07:48,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:07:48,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:07:48,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:07:48,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:07:48,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:07:48,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:07:48,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 21:07:48,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:07:48,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:07:48,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:07:48,228 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 21:07:48,262 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:07:48,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:07:48,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:07:48,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:07:48,265 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:07:48,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:07:48,266 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:07:48,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:07:48,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:07:48,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:07:48,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:07:48,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:07:48,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:07:48,269 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:07:48,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:07:48,269 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:07:48,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:07:48,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:07:48,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:07:48,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:07:48,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:07:48,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:07:48,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:07:48,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:07:48,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:07:48,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:07:48,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:48,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:07:48,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:07:48,272 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 -> DAGSIZE 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 21:07:48,542 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:07:48,555 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:07:48,558 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:07:48,559 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:07:48,560 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:07:48,561 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-07-20 21:07:48,633 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12b276afb/c6d237ef8efd44178803583b4d403a05/FLAGe5c86fbaa [2020-07-20 21:07:49,057 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:07:49,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-07-20 21:07:49,071 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12b276afb/c6d237ef8efd44178803583b4d403a05/FLAGe5c86fbaa [2020-07-20 21:07:49,466 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12b276afb/c6d237ef8efd44178803583b4d403a05 [2020-07-20 21:07:49,474 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:07:49,476 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:07:49,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:07:49,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:07:49,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:07:49,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:07:49" (1/1) ... [2020-07-20 21:07:49,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70963897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:49, skipping insertion in model container [2020-07-20 21:07:49,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:07:49" (1/1) ... [2020-07-20 21:07:49,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:07:49,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:07:49,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:07:49,779 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:07:49,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:07:49,962 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:07:49,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:49 WrapperNode [2020-07-20 21:07:49,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:07:49,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:07:49,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:07:49,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:07:49,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:49" (1/1) ... [2020-07-20 21:07:49,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:49" (1/1) ... [2020-07-20 21:07:49,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:49" (1/1) ... [2020-07-20 21:07:49,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:49" (1/1) ... [2020-07-20 21:07:50,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:49" (1/1) ... [2020-07-20 21:07:50,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:49" (1/1) ... [2020-07-20 21:07:50,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:49" (1/1) ... [2020-07-20 21:07:50,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:07:50,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:07:50,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:07:50,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:07:50,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:49" (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 21:07:50,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:07:50,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:07:50,074 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-07-20 21:07:50,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-07-20 21:07:50,074 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:07:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:07:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-20 21:07:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-07-20 21:07:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 21:07:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 21:07:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 21:07:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 21:07:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 21:07:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 21:07:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-07-20 21:07:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:07:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:07:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-20 21:07:50,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:07:50,514 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:07:50,515 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-20 21:07:50,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:07:50 BoogieIcfgContainer [2020-07-20 21:07:50,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:07:50,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:07:50,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:07:50,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:07:50,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:07:49" (1/3) ... [2020-07-20 21:07:50,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616ed9d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:07:50, skipping insertion in model container [2020-07-20 21:07:50,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:07:49" (2/3) ... [2020-07-20 21:07:50,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616ed9d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:07:50, skipping insertion in model container [2020-07-20 21:07:50,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:07:50" (3/3) ... [2020-07-20 21:07:50,527 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-07-20 21:07:50,538 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:07:50,548 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:07:50,566 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:07:50,599 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:07:50,599 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:07:50,600 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:07:50,600 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:07:50,600 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:07:50,600 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:07:50,600 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:07:50,601 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:07:50,629 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-07-20 21:07:50,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 21:07:50,635 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:07:50,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:07:50,636 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:07:50,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:07:50,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2020-07-20 21:07:50,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:07:50,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473124935] [2020-07-20 21:07:50,650 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 21:07:50,767 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:07:50,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:07:50,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 21:07:50,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:07:50,818 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 21:07:50,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:07:50,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473124935] [2020-07-20 21:07:50,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:07:50,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 21:07:50,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505874563] [2020-07-20 21:07:50,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 21:07:50,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:07:50,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 21:07:50,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 21:07:50,847 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-07-20 21:07:50,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:07:50,902 INFO L93 Difference]: Finished difference Result 113 states and 177 transitions. [2020-07-20 21:07:50,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 21:07:50,904 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-07-20 21:07:50,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:07:50,916 INFO L225 Difference]: With dead ends: 113 [2020-07-20 21:07:50,916 INFO L226 Difference]: Without dead ends: 56 [2020-07-20 21:07:50,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 21:07:50,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-20 21:07:50,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-07-20 21:07:50,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-20 21:07:50,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-07-20 21:07:50,965 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2020-07-20 21:07:50,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:07:50,966 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-07-20 21:07:50,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 21:07:50,966 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-07-20 21:07:50,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 21:07:50,967 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:07:50,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:07:51,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:51,183 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:07:51,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:07:51,184 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2020-07-20 21:07:51,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:07:51,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368584790] [2020-07-20 21:07:51,186 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 21:07:51,312 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:07:51,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 21:07:51,312 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 21:07:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 21:07:51,337 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 21:07:51,367 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 21:07:51,367 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 21:07:51,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:07:51,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:07:51 BoogieIcfgContainer [2020-07-20 21:07:51,616 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 21:07:51,619 INFO L168 Benchmark]: Toolchain (without parser) took 2142.49 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 103.0 MB in the beginning and 100.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:51,620 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 21:07:51,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.07 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 102.6 MB in the beginning and 178.5 MB in the end (delta: -75.9 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:51,622 INFO L168 Benchmark]: Boogie Preprocessor took 54.36 ms. Allocated memory is still 202.4 MB. Free memory was 178.5 MB in the beginning and 176.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:51,623 INFO L168 Benchmark]: RCFGBuilder took 500.97 ms. Allocated memory is still 202.4 MB. Free memory was 176.4 MB in the beginning and 147.5 MB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:51,624 INFO L168 Benchmark]: TraceAbstraction took 1096.08 ms. Allocated memory is still 202.4 MB. Free memory was 146.8 MB in the beginning and 100.0 MB in the end (delta: 46.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. [2020-07-20 21:07:51,628 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 486.07 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 102.6 MB in the beginning and 178.5 MB in the end (delta: -75.9 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.36 ms. Allocated memory is still 202.4 MB. Free memory was 178.5 MB in the beginning and 176.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 500.97 ms. Allocated memory is still 202.4 MB. Free memory was 176.4 MB in the beginning and 147.5 MB in the end (delta: 29.0 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1096.08 ms. Allocated memory is still 202.4 MB. Free memory was 146.8 MB in the beginning and 100.0 MB in the end (delta: 46.8 MB). Peak memory consumption was 46.8 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 bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. 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)=6, \old(Zero_fmod)=9, one_fmod=1, Zero_fmod={4:0}] [L126] float x = 0.0f; [L127] float y = __VERIFIER_nondet_float(); [L129] COND TRUE (y < 0.0f || y > 0.0f) VAL [one_fmod=1, x=0, y=9, Zero_fmod={4:0}] [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=0, \old(y)=9, one_fmod=1, Zero_fmod={4:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=9, one_fmod=1, x=0, y=9, Zero_fmod={4:0}] [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)=0, \old(y)=9, one_fmod=1, sx=30612, x=0, y=9, Zero_fmod={4:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=9, hx=0, hy=2139095041, one_fmod=1, sx=30612, x=0, y=9, Zero_fmod={4:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=10, one_fmod=1, x=0, y=9, Zero_fmod={4:0}] [L131] float res = fmod_float(x, y); [L134] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_fmod=1, res=10, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=9, Zero_fmod={4:0}] [L134] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L135] __VERIFIER_error() VAL [one_fmod=1, res=10, x=0, y=9, Zero_fmod={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 61 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: 78 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=61occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 89 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...