/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:05:57,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:05:57,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:05:57,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:05:57,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:05:57,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:05:57,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:05:57,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:05:57,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:05:57,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:05:57,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:05:57,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:05:57,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:05:57,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:05:57,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:05:57,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:05:57,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:05:57,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:05:57,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:05:57,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:05:57,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:05:57,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:05:57,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:05:57,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:05:57,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 13:05:57,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:05:57,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:05:57,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:05:57,307 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 13:05:57,322 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:05:57,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:05:57,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:05:57,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:05:57,324 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:05:57,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:05:57,324 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:05:57,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:05:57,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:05:57,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:05:57,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:05:57,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:05:57,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:05:57,325 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:05:57,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:05:57,326 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:05:57,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:05:57,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:05:57,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:05:57,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:05:57,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:05:57,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:05:57,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:05:57,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:05:57,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:05:57,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:05:57,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:05:57,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:05:57,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:05:57,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 13:05:57,614 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:05:57,626 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:05:57,630 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:05:57,631 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:05:57,631 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:05:57,632 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-20 13:05:57,699 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e67265ab0/158894d65d0b42c9a19a5a6dedd82e25/FLAGd658354c3 [2020-07-20 13:05:58,194 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:05:58,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-20 13:05:58,202 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e67265ab0/158894d65d0b42c9a19a5a6dedd82e25/FLAGd658354c3 [2020-07-20 13:05:58,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e67265ab0/158894d65d0b42c9a19a5a6dedd82e25 [2020-07-20 13:05:58,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:05:58,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:05:58,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:05:58,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:05:58,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:05:58,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:05:58" (1/1) ... [2020-07-20 13:05:58,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8e8ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:58, skipping insertion in model container [2020-07-20 13:05:58,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:05:58" (1/1) ... [2020-07-20 13:05:58,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:05:58,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:05:58,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:05:58,840 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:05:58,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:05:59,013 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:05:59,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59 WrapperNode [2020-07-20 13:05:59,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:05:59,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:05:59,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:05:59,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:05:59,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... [2020-07-20 13:05:59,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:05:59,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:05:59,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:05:59,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:05:59,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:05:59,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:05:59,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:05:59,138 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-20 13:05:59,138 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-20 13:05:59,139 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-07-20 13:05:59,139 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:05:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:05:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 13:05:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-20 13:05:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-20 13:05:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:05:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 13:05:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:05:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:05:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 13:05:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:05:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-07-20 13:05:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:05:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:05:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-20 13:05:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:05:59,751 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:05:59,752 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-20 13:05:59,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:05:59 BoogieIcfgContainer [2020-07-20 13:05:59,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:05:59,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:05:59,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:05:59,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:05:59,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:05:58" (1/3) ... [2020-07-20 13:05:59,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453ecad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:05:59, skipping insertion in model container [2020-07-20 13:05:59,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:59" (2/3) ... [2020-07-20 13:05:59,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453ecad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:05:59, skipping insertion in model container [2020-07-20 13:05:59,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:05:59" (3/3) ... [2020-07-20 13:05:59,765 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-07-20 13:05:59,775 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:05:59,782 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:05:59,793 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:05:59,814 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:05:59,814 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:05:59,814 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:05:59,814 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:05:59,814 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:05:59,815 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:05:59,815 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:05:59,815 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:05:59,833 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-20 13:05:59,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 13:05:59,840 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:05:59,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:05:59,842 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:05:59,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:05:59,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-07-20 13:05:59,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:05:59,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297429354] [2020-07-20 13:05:59,859 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:05:59,972 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:05:59,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:05:59,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 13:05:59,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:06:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:06:00,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:06:00,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297429354] [2020-07-20 13:06:00,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:06:00,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 13:06:00,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33230194] [2020-07-20 13:06:00,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 13:06:00,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:06:00,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 13:06:00,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:06:00,034 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2020-07-20 13:06:00,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:06:00,067 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-07-20 13:06:00,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 13:06:00,068 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-20 13:06:00,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:06:00,079 INFO L225 Difference]: With dead ends: 138 [2020-07-20 13:06:00,079 INFO L226 Difference]: Without dead ends: 68 [2020-07-20 13:06:00,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:06:00,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-20 13:06:00,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-20 13:06:00,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-20 13:06:00,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-07-20 13:06:00,128 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-07-20 13:06:00,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:06:00,128 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-07-20 13:06:00,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 13:06:00,129 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-07-20 13:06:00,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 13:06:00,130 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:00,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:06:00,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:00,344 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:00,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:00,346 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-07-20 13:06:00,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:00,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904583941] [2020-07-20 13:06:00,347 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:00,462 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:06:00,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:06:00,463 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:06:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:06:00,497 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:06:00,533 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:06:00,534 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:06:00,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:00,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:06:00 BoogieIcfgContainer [2020-07-20 13:06:00,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:06:00,787 INFO L168 Benchmark]: Toolchain (without parser) took 2211.27 ms. Allocated memory was 134.2 MB in the beginning and 198.2 MB in the end (delta: 64.0 MB). Free memory was 97.9 MB in the beginning and 78.1 MB in the end (delta: 19.8 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:00,788 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 134.2 MB. Free memory was 117.3 MB in the beginning and 117.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 13:06:00,789 INFO L168 Benchmark]: CACSL2BoogieTranslator took 436.04 ms. Allocated memory was 134.2 MB in the beginning and 198.2 MB in the end (delta: 64.0 MB). Free memory was 97.5 MB in the beginning and 173.0 MB in the end (delta: -75.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:00,790 INFO L168 Benchmark]: Boogie Preprocessor took 67.04 ms. Allocated memory is still 198.2 MB. Free memory was 173.0 MB in the beginning and 170.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:00,791 INFO L168 Benchmark]: RCFGBuilder took 675.07 ms. Allocated memory is still 198.2 MB. Free memory was 170.8 MB in the beginning and 133.7 MB in the end (delta: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:00,792 INFO L168 Benchmark]: TraceAbstraction took 1027.47 ms. Allocated memory is still 198.2 MB. Free memory was 133.0 MB in the beginning and 78.1 MB in the end (delta: 54.9 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:00,812 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 134.2 MB. Free memory was 117.3 MB in the beginning and 117.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 436.04 ms. Allocated memory was 134.2 MB in the beginning and 198.2 MB in the end (delta: 64.0 MB). Free memory was 97.5 MB in the beginning and 173.0 MB in the end (delta: -75.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.04 ms. Allocated memory is still 198.2 MB. Free memory was 173.0 MB in the beginning and 170.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 675.07 ms. Allocated memory is still 198.2 MB. Free memory was 170.8 MB in the beginning and 133.7 MB in the end (delta: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1027.47 ms. Allocated memory is still 198.2 MB. Free memory was 133.0 MB in the beginning and 78.1 MB in the end (delta: 54.9 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=2, \old(Zero_fmod)=7, \old(Zero_fmod)=9, one_fmod=1, Zero_fmod={21657:0}] [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) VAL [\old(x)=3, one_fmod=1, Zero_fmod={21657:0}] [L164] __int32_t hx; VAL [\old(x)=3, one_fmod=1, x=3, Zero_fmod={21657:0}] [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=3, \result=-2147483648, hx=31891, one_fmod=1, x=3, Zero_fmod={21657:0}] [L183] RET isfinite_double(x) VAL [isfinite_double(x)=-2147483648, one_fmod=1, x=3, Zero_fmod={21657:0}] [L183] COND TRUE isfinite_double(x) [L185] CALL, EXPR fmod_double(x, y) VAL [\old(x)=3, \old(y)=5, one_fmod=1, Zero_fmod={21657:0}] [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [\old(x)=3, \old(y)=5, one_fmod=1, x=3, y=5, Zero_fmod={21657:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [\old(x)=3, \old(y)=5, lx=15, ly=18, one_fmod=1, sx=18457, x=3, y=5, Zero_fmod={21657:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [\old(x)=3, \old(y)=5, hx=0, lx=15, ly=18, one_fmod=1, sx=18457, x=3, y=5, Zero_fmod={21657:0}] [L185] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=8, one_fmod=1, x=3, y=5, Zero_fmod={21657:0}] [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={21657:0}] [L189] __VERIFIER_error() VAL [one_fmod=1, res=8, x=3, y=5, Zero_fmod={21657:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 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: 100 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...