/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 00:31:10,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 00:31:10,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 00:31:10,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 00:31:10,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 00:31:10,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 00:31:10,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 00:31:10,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 00:31:10,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 00:31:10,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 00:31:10,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 00:31:10,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 00:31:10,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 00:31:10,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 00:31:10,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 00:31:10,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 00:31:10,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 00:31:10,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 00:31:10,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 00:31:10,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 00:31:10,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 00:31:10,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 00:31:10,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 00:31:10,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 00:31:10,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 00:31:10,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 00:31:10,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 00:31:10,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 00:31:10,797 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 00:31:10,830 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 00:31:10,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 00:31:10,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 00:31:10,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 00:31:10,835 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 00:31:10,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 00:31:10,835 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 00:31:10,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 00:31:10,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 00:31:10,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 00:31:10,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 00:31:10,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 00:31:10,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 00:31:10,838 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 00:31:10,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 00:31:10,838 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 00:31:10,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 00:31:10,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 00:31:10,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 00:31:10,839 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 00:31:10,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 00:31:10,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 00:31:10,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 00:31:10,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 00:31:10,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 00:31:10,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 00:31:10,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:31:10,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 00:31:10,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 00:31:10,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 00:31:11,131 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 00:31:11,151 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 00:31:11,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 00:31:11,157 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 00:31:11,158 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 00:31:11,158 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-21 00:31:11,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76225d837/84947562987d422cad621b7024000279/FLAG3e2528fbf [2020-07-21 00:31:11,768 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 00:31:11,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-21 00:31:11,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76225d837/84947562987d422cad621b7024000279/FLAG3e2528fbf [2020-07-21 00:31:12,050 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76225d837/84947562987d422cad621b7024000279 [2020-07-21 00:31:12,062 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 00:31:12,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 00:31:12,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 00:31:12,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 00:31:12,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 00:31:12,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:31:12" (1/1) ... [2020-07-21 00:31:12,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@633c7dd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:31:12, skipping insertion in model container [2020-07-21 00:31:12,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:31:12" (1/1) ... [2020-07-21 00:31:12,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 00:31:12,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 00:31:12,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:31:12,349 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 00:31:12,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:31:12,521 INFO L208 MainTranslator]: Completed translation [2020-07-21 00:31:12,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:31:12 WrapperNode [2020-07-21 00:31:12,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 00:31:12,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 00:31:12,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 00:31:12,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 00:31:12,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:31:12" (1/1) ... [2020-07-21 00:31:12,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:31:12" (1/1) ... [2020-07-21 00:31:12,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:31:12" (1/1) ... [2020-07-21 00:31:12,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:31:12" (1/1) ... [2020-07-21 00:31:12,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:31:12" (1/1) ... [2020-07-21 00:31:12,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:31:12" (1/1) ... [2020-07-21 00:31:12,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:31:12" (1/1) ... [2020-07-21 00:31:12,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 00:31:12,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 00:31:12,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 00:31:12,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 00:31:12,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:31:12" (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 00:31:12,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 00:31:12,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 00:31:12,645 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-07-21 00:31:12,645 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-07-21 00:31:12,645 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 00:31:12,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 00:31:12,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-21 00:31:12,646 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-07-21 00:31:12,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 00:31:12,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 00:31:12,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 00:31:12,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 00:31:12,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 00:31:12,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 00:31:12,647 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-07-21 00:31:12,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 00:31:12,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 00:31:12,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-21 00:31:12,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 00:31:13,110 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 00:31:13,111 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-21 00:31:13,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:31:13 BoogieIcfgContainer [2020-07-21 00:31:13,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 00:31:13,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 00:31:13,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 00:31:13,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 00:31:13,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:31:12" (1/3) ... [2020-07-21 00:31:13,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61662b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:31:13, skipping insertion in model container [2020-07-21 00:31:13,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:31:12" (2/3) ... [2020-07-21 00:31:13,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61662b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:31:13, skipping insertion in model container [2020-07-21 00:31:13,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:31:13" (3/3) ... [2020-07-21 00:31:13,123 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-07-21 00:31:13,133 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 00:31:13,140 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 00:31:13,154 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 00:31:13,174 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 00:31:13,175 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 00:31:13,175 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 00:31:13,175 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 00:31:13,175 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 00:31:13,175 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 00:31:13,176 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 00:31:13,176 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 00:31:13,192 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-07-21 00:31:13,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 00:31:13,198 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:31:13,199 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 00:31:13,200 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:31:13,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:31:13,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-07-21 00:31:13,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:31:13,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123387053] [2020-07-21 00:31:13,213 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:31:13,325 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 00:31:13,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:31:13,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 00:31:13,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:31:13,361 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 00:31:13,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 00:31:13,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123387053] [2020-07-21 00:31:13,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 00:31:13,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 00:31:13,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427982670] [2020-07-21 00:31:13,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 00:31:13,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:31:13,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 00:31:13,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 00:31:13,391 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2020-07-21 00:31:13,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:31:13,425 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-07-21 00:31:13,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 00:31:13,427 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-21 00:31:13,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:31:13,438 INFO L225 Difference]: With dead ends: 112 [2020-07-21 00:31:13,438 INFO L226 Difference]: Without dead ends: 55 [2020-07-21 00:31:13,443 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 00:31:13,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-21 00:31:13,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-07-21 00:31:13,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-21 00:31:13,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-07-21 00:31:13,489 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-07-21 00:31:13,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:31:13,490 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-07-21 00:31:13,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 00:31:13,490 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-07-21 00:31:13,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 00:31:13,492 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:31:13,492 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 00:31:13,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:31:13,698 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:31:13,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:31:13,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-07-21 00:31:13,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:31:13,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942107290] [2020-07-21 00:31:13,701 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:31:13,830 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:31:13,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 00:31:13,830 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 00:31:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 00:31:13,861 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 00:31:13,897 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 00:31:13,898 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 00:31:14,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:31:14,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:31:14 BoogieIcfgContainer [2020-07-21 00:31:14,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 00:31:14,151 INFO L168 Benchmark]: Toolchain (without parser) took 2086.71 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 97.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 67.8 MB. Max. memory is 7.1 GB. [2020-07-21 00:31:14,152 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 00:31:14,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.03 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 178.2 MB in the end (delta: -76.7 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-07-21 00:31:14,154 INFO L168 Benchmark]: Boogie Preprocessor took 55.11 ms. Allocated memory is still 201.9 MB. Free memory was 178.2 MB in the beginning and 176.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-21 00:31:14,155 INFO L168 Benchmark]: RCFGBuilder took 537.51 ms. Allocated memory is still 201.9 MB. Free memory was 176.2 MB in the beginning and 147.7 MB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2020-07-21 00:31:14,156 INFO L168 Benchmark]: TraceAbstraction took 1032.71 ms. Allocated memory is still 201.9 MB. Free memory was 147.7 MB in the beginning and 97.6 MB in the end (delta: 50.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. [2020-07-21 00:31:14,160 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 451.03 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 178.2 MB in the end (delta: -76.7 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.11 ms. Allocated memory is still 201.9 MB. Free memory was 178.2 MB in the beginning and 176.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 537.51 ms. Allocated memory is still 201.9 MB. Free memory was 176.2 MB in the beginning and 147.7 MB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1032.71 ms. Allocated memory is still 201.9 MB. Free memory was 147.7 MB in the beginning and 97.6 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={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=281, 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=2139095040, hy=0, one_fmod=1, sx=281, x=3, y=5, Zero_fmod={28103:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=8, 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=8, x=3, y=5, Zero_fmod={28103:0}] [L135] __VERIFIER_error() VAL [one_fmod=1, res=8, 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 78 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...