/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/double_req_bl_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 00:30:50,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 00:30:50,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 00:30:50,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 00:30:50,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 00:30:50,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 00:30:50,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 00:30:50,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 00:30:50,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 00:30:50,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 00:30:50,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 00:30:50,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 00:30:50,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 00:30:50,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 00:30:50,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 00:30:50,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 00:30:50,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 00:30:50,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 00:30:50,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 00:30:50,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 00:30:50,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 00:30:50,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 00:30:50,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 00:30:50,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 00:30:50,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 00:30:50,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 00:30:50,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 00:30:50,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 00:30:50,669 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 00:30:50,683 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 00:30:50,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 00:30:50,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 00:30:50,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 00:30:50,686 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 00:30:50,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 00:30:50,686 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 00:30:50,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 00:30:50,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 00:30:50,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 00:30:50,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 00:30:50,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 00:30:50,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 00:30:50,688 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 00:30:50,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 00:30:50,688 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 00:30:50,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 00:30:50,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 00:30:50,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 00:30:50,689 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 00:30:50,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 00:30:50,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 00:30:50,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 00:30:50,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 00:30:50,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 00:30:50,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 00:30:50,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:50,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 00:30:50,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 00:30:50,691 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 00:30:51,041 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 00:30:51,055 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 00:30:51,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 00:30:51,062 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 00:30:51,062 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 00:30:51,064 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-07-21 00:30:51,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db60075e3/c2cfa77637394392bf42453c57f36b8b/FLAG128988229 [2020-07-21 00:30:51,593 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 00:30:51,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-07-21 00:30:51,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db60075e3/c2cfa77637394392bf42453c57f36b8b/FLAG128988229 [2020-07-21 00:30:51,973 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db60075e3/c2cfa77637394392bf42453c57f36b8b [2020-07-21 00:30:51,983 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 00:30:51,986 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 00:30:51,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 00:30:51,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 00:30:51,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 00:30:51,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:30:51" (1/1) ... [2020-07-21 00:30:51,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c5f245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:51, skipping insertion in model container [2020-07-21 00:30:51,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:30:51" (1/1) ... [2020-07-21 00:30:52,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 00:30:52,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 00:30:52,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:30:52,218 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 00:30:52,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:30:52,433 INFO L208 MainTranslator]: Completed translation [2020-07-21 00:30:52,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:52 WrapperNode [2020-07-21 00:30:52,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 00:30:52,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 00:30:52,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 00:30:52,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 00:30:52,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:52" (1/1) ... [2020-07-21 00:30:52,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:52" (1/1) ... [2020-07-21 00:30:52,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:52" (1/1) ... [2020-07-21 00:30:52,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:52" (1/1) ... [2020-07-21 00:30:52,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:52" (1/1) ... [2020-07-21 00:30:52,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:52" (1/1) ... [2020-07-21 00:30:52,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:52" (1/1) ... [2020-07-21 00:30:52,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 00:30:52,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 00:30:52,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 00:30:52,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 00:30:52,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:52" (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 00:30:52,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 00:30:52,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 00:30:52,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 00:30:52,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-07-21 00:30:52,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 00:30:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 00:30:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 00:30:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-07-21 00:30:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 00:30:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 00:30:52,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 00:30:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 00:30:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 00:30:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 00:30:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 00:30:52,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 00:30:52,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 00:30:52,897 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 00:30:52,898 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-21 00:30:52,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:30:52 BoogieIcfgContainer [2020-07-21 00:30:52,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 00:30:52,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 00:30:52,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 00:30:52,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 00:30:52,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:30:51" (1/3) ... [2020-07-21 00:30:52,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe5294b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:30:52, skipping insertion in model container [2020-07-21 00:30:52,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:52" (2/3) ... [2020-07-21 00:30:52,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe5294b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:30:52, skipping insertion in model container [2020-07-21 00:30:52,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:30:52" (3/3) ... [2020-07-21 00:30:52,913 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-07-21 00:30:52,927 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 00:30:52,937 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 00:30:52,971 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 00:30:52,999 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 00:30:53,000 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 00:30:53,000 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 00:30:53,000 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 00:30:53,001 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 00:30:53,001 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 00:30:53,001 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 00:30:53,002 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 00:30:53,024 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-07-21 00:30:53,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 00:30:53,039 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:30:53,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:30:53,040 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:30:53,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:30:53,046 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-07-21 00:30:53,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:30:53,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872996087] [2020-07-21 00:30:53,055 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 00:30:53,165 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 00:30:53,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:30:53,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 00:30:53,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:30:53,202 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 00:30:53,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 00:30:53,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872996087] [2020-07-21 00:30:53,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 00:30:53,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 00:30:53,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652646302] [2020-07-21 00:30:53,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 00:30:53,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:30:53,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 00:30:53,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 00:30:53,228 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2020-07-21 00:30:53,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:30:53,261 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-07-21 00:30:53,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 00:30:53,262 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-07-21 00:30:53,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:30:53,285 INFO L225 Difference]: With dead ends: 76 [2020-07-21 00:30:53,286 INFO L226 Difference]: Without dead ends: 38 [2020-07-21 00:30:53,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 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 00:30:53,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-21 00:30:53,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-07-21 00:30:53,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-21 00:30:53,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-07-21 00:30:53,329 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-07-21 00:30:53,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:30:53,330 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-07-21 00:30:53,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 00:30:53,330 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-07-21 00:30:53,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 00:30:53,331 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:30:53,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:30:53,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:53,548 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:30:53,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:30:53,549 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-07-21 00:30:53,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:30:53,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10366657] [2020-07-21 00:30:53,550 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 00:30:53,646 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:30:53,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 00:30:53,646 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 00:30:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 00:30:53,664 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 00:30:53,688 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 00:30:53,688 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 00:30:53,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:53,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:30:53 BoogieIcfgContainer [2020-07-21 00:30:53,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 00:30:53,936 INFO L168 Benchmark]: Toolchain (without parser) took 1950.19 ms. Allocated memory was 135.8 MB in the beginning and 203.9 MB in the end (delta: 68.2 MB). Free memory was 100.8 MB in the beginning and 117.0 MB in the end (delta: -16.2 MB). Peak memory consumption was 51.9 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:53,937 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 00:30:53,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 446.81 ms. Allocated memory was 135.8 MB in the beginning and 203.9 MB in the end (delta: 68.2 MB). Free memory was 100.3 MB in the beginning and 181.9 MB in the end (delta: -81.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:53,941 INFO L168 Benchmark]: Boogie Preprocessor took 72.49 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 179.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:53,942 INFO L168 Benchmark]: RCFGBuilder took 396.19 ms. Allocated memory is still 203.9 MB. Free memory was 179.8 MB in the beginning and 157.0 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:53,943 INFO L168 Benchmark]: TraceAbstraction took 1028.11 ms. Allocated memory is still 203.9 MB. Free memory was 157.0 MB in the beginning and 117.0 MB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:53,949 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 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 446.81 ms. Allocated memory was 135.8 MB in the beginning and 203.9 MB in the end (delta: 68.2 MB). Free memory was 100.3 MB in the beginning and 181.9 MB in the end (delta: -81.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.49 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 179.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 396.19 ms. Allocated memory is still 203.9 MB. Free memory was 179.8 MB in the beginning and 157.0 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1028.11 ms. Allocated memory is still 203.9 MB. Free memory was 157.0 MB in the beginning and 117.0 MB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someUnaryDOUBLEoperation at line 91, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 95. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; VAL [\old(huge_ceil)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L91] double x = -0.0; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L92] CALL, EXPR ceil_double(x) VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=0, x=4] [L29] COND TRUE j0 < 20 VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=0, j0=0, x=4] [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=0, j0=0, x=4] [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; VAL [\old(x)=4, \result=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=0, j0=0, x=4] [L92] RET, EXPR ceil_double(x) VAL [ceil_double(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L92] double res = ceil_double(x); [L95] COND TRUE res != x VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=4, x=4] [L96] __VERIFIER_error() VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=4, x=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 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: 56 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 37 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 51 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...