/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 2 -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 [2020-07-21 19:15:17,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 19:15:17,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 19:15:17,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 19:15:17,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 19:15:17,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 19:15:17,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 19:15:17,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 19:15:17,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 19:15:17,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 19:15:17,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 19:15:17,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 19:15:17,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 19:15:17,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 19:15:17,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 19:15:17,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 19:15:17,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 19:15:17,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 19:15:17,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 19:15:17,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 19:15:17,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 19:15:17,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 19:15:17,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 19:15:17,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 19:15:17,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 19:15:17,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 19:15:17,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 19:15:17,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 19:15:17,487 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 19:15:17,502 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 19:15:17,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 19:15:17,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 19:15:17,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 19:15:17,504 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 19:15:17,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 19:15:17,504 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 19:15:17,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 19:15:17,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 19:15:17,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 19:15:17,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 19:15:17,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 19:15:17,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 19:15:17,505 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 19:15:17,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 19:15:17,506 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 19:15:17,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 19:15:17,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 19:15:17,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 19:15:17,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 19:15:17,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 19:15:17,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 19:15:17,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 19:15:17,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 19:15:17,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 19:15:17,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 19:15:17,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:17,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 19:15:17,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 19:15:17,508 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 -> 2 [2020-07-21 19:15:17,823 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 19:15:17,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 19:15:17,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 19:15:17,847 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 19:15:17,851 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 19:15:17,852 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-21 19:15:17,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66382eac0/72a792a19b3e431a958e25eb725d8f01/FLAGcfd1071cb [2020-07-21 19:15:18,408 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 19:15:18,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-21 19:15:18,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66382eac0/72a792a19b3e431a958e25eb725d8f01/FLAGcfd1071cb [2020-07-21 19:15:18,768 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66382eac0/72a792a19b3e431a958e25eb725d8f01 [2020-07-21 19:15:18,779 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 19:15:18,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 19:15:18,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 19:15:18,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 19:15:18,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 19:15:18,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:15:18" (1/1) ... [2020-07-21 19:15:18,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b80807d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:18, skipping insertion in model container [2020-07-21 19:15:18,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:15:18" (1/1) ... [2020-07-21 19:15:18,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 19:15:18,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 19:15:19,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:15:19,041 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 19:15:19,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:15:19,199 INFO L208 MainTranslator]: Completed translation [2020-07-21 19:15:19,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:19 WrapperNode [2020-07-21 19:15:19,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 19:15:19,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 19:15:19,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 19:15:19,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 19:15:19,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:19" (1/1) ... [2020-07-21 19:15:19,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:19" (1/1) ... [2020-07-21 19:15:19,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:19" (1/1) ... [2020-07-21 19:15:19,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:19" (1/1) ... [2020-07-21 19:15:19,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:19" (1/1) ... [2020-07-21 19:15:19,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:19" (1/1) ... [2020-07-21 19:15:19,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:19" (1/1) ... [2020-07-21 19:15:19,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 19:15:19,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 19:15:19,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 19:15:19,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 19:15:19,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 19:15:19,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 19:15:19,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 19:15:19,330 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-07-21 19:15:19,330 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-07-21 19:15:19,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 19:15:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 19:15:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-21 19:15:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-07-21 19:15:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 19:15:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 19:15:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 19:15:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 19:15:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 19:15:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 19:15:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-07-21 19:15:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 19:15:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 19:15:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-21 19:15:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 19:15:19,762 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 19:15:19,763 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-21 19:15:19,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:15:19 BoogieIcfgContainer [2020-07-21 19:15:19,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 19:15:19,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 19:15:19,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 19:15:19,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 19:15:19,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:15:18" (1/3) ... [2020-07-21 19:15:19,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d6890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:15:19, skipping insertion in model container [2020-07-21 19:15:19,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:15:19" (2/3) ... [2020-07-21 19:15:19,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d6890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:15:19, skipping insertion in model container [2020-07-21 19:15:19,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:15:19" (3/3) ... [2020-07-21 19:15:19,775 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-07-21 19:15:19,786 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 19:15:19,794 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 19:15:19,808 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 19:15:19,840 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 19:15:19,840 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 19:15:19,840 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 19:15:19,840 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 19:15:19,840 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 19:15:19,840 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 19:15:19,841 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 19:15:19,841 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 19:15:19,861 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-07-21 19:15:19,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 19:15:19,867 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:15:19,868 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] [2020-07-21 19:15:19,868 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:15:19,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:15:19,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-07-21 19:15:19,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:15:19,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600860958] [2020-07-21 19:15:19,881 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:20,039 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:15:20,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:15:20,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 19:15:20,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:15:20,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 19:15:20,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:15:20,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600860958] [2020-07-21 19:15:20,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:15:20,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 19:15:20,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322702624] [2020-07-21 19:15:20,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 19:15:20,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:15:20,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 19:15:20,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 19:15:20,114 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2020-07-21 19:15:20,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:15:20,148 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-07-21 19:15:20,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 19:15:20,150 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-21 19:15:20,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:15:20,162 INFO L225 Difference]: With dead ends: 112 [2020-07-21 19:15:20,162 INFO L226 Difference]: Without dead ends: 55 [2020-07-21 19:15:20,167 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 [2020-07-21 19:15:20,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-21 19:15:20,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-07-21 19:15:20,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-21 19:15:20,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-07-21 19:15:20,216 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-07-21 19:15:20,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:15:20,217 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-07-21 19:15:20,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 19:15:20,217 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-07-21 19:15:20,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 19:15:20,219 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:15:20,219 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] [2020-07-21 19:15:20,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:20,434 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:15:20,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:15:20,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-07-21 19:15:20,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:15:20,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373861189] [2020-07-21 19:15:20,438 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:20,536 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:15:20,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 19:15:20,537 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 19:15:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 19:15:20,572 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 19:15:20,608 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 19:15:20,608 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 19:15:20,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:15:20,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 07:15:20 BoogieIcfgContainer [2020-07-21 19:15:20,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 19:15:20,865 INFO L168 Benchmark]: Toolchain (without parser) took 2084.17 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 101.0 MB in the beginning and 93.8 MB in the end (delta: 7.2 MB). Peak memory consumption was 70.1 MB. Max. memory is 7.1 GB. [2020-07-21 19:15:20,866 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 19:15:20,867 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.34 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 100.6 MB in the beginning and 175.1 MB in the end (delta: -74.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-07-21 19:15:20,868 INFO L168 Benchmark]: Boogie Preprocessor took 56.73 ms. Allocated memory is still 199.2 MB. Free memory was 175.1 MB in the beginning and 173.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-07-21 19:15:20,869 INFO L168 Benchmark]: RCFGBuilder took 509.17 ms. Allocated memory is still 199.2 MB. Free memory was 173.0 MB in the beginning and 144.7 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2020-07-21 19:15:20,870 INFO L168 Benchmark]: TraceAbstraction took 1094.50 ms. Allocated memory is still 199.2 MB. Free memory was 144.7 MB in the beginning and 93.8 MB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 7.1 GB. [2020-07-21 19:15:20,874 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 417.34 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 100.6 MB in the beginning and 175.1 MB in the end (delta: -74.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.73 ms. Allocated memory is still 199.2 MB. Free memory was 175.1 MB in the beginning and 173.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 509.17 ms. Allocated memory is still 199.2 MB. Free memory was 173.0 MB in the beginning and 144.7 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1094.50 ms. Allocated memory is still 199.2 MB. Free memory was 144.7 MB in the beginning and 93.8 MB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 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={28103:0}] [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; VAL [one_fmod=1, x=3, Zero_fmod={28103:0}] [L129] CALL isfinite_float(x) VAL [\old(x)=3, one_fmod=1, Zero_fmod={28103:0}] [L109] __int32_t ix; VAL [\old(x)=3, one_fmod=1, x=3, Zero_fmod={28103:0}] [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={28103:0}] [L129] RET isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=3, Zero_fmod={28103:0}] [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={28103:0}] [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={28103:0}] [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=4294967295, x=3, y=5, Zero_fmod={28103:0}] [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=4294967295, x=3, y=5, Zero_fmod={28103:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=7, one_fmod=1, x=3, y=5, Zero_fmod={28103:0}] [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x VAL [one_fmod=1, res=7, x=3, y=5, Zero_fmod={28103:0}] [L135] __VERIFIER_error() VAL [one_fmod=1, res=7, x=3, y=5, Zero_fmod={28103:0}] - 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 106 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...