/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_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:05:49,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:05:49,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:05:49,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:05:49,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:05:49,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:05:49,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:05:49,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:05:49,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:05:49,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:05:49,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:05:49,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:05:49,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:05:49,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:05:49,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:05:49,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:05:49,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:05:49,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:05:49,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:05:49,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:05:49,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:05:49,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:05:49,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:05:49,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:05:49,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 13:05:49,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:05:49,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:05:49,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:05:49,817 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 13:05:49,836 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:05:49,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:05:49,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:05:49,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:05:49,838 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:05:49,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:05:49,839 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:05:49,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:05:49,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:05:49,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:05:49,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:05:49,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:05:49,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:05:49,841 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:05:49,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:05:49,842 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:05:49,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:05:49,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:05:49,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:05:49,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:05:49,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:05:49,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:05:49,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:05:49,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:05:49,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:05:49,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:05:49,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:05:49,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:05:49,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:05:49,844 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 13:05:50,237 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:05:50,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:05:50,253 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:05:50,255 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:05:50,255 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:05:50,255 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-07-20 13:05:50,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd6c04e68/5683f724217241b1b57110ceb6739154/FLAG340fb6c17 [2020-07-20 13:05:50,766 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:05:50,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-07-20 13:05:50,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd6c04e68/5683f724217241b1b57110ceb6739154/FLAG340fb6c17 [2020-07-20 13:05:51,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd6c04e68/5683f724217241b1b57110ceb6739154 [2020-07-20 13:05:51,156 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:05:51,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:05:51,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:05:51,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:05:51,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:05:51,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:05:51" (1/1) ... [2020-07-20 13:05:51,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b231a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:51, skipping insertion in model container [2020-07-20 13:05:51,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:05:51" (1/1) ... [2020-07-20 13:05:51,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:05:51,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:05:51,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:05:51,384 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:05:51,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:05:51,540 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:05:51,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:51 WrapperNode [2020-07-20 13:05:51,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:05:51,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:05:51,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:05:51,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:05:51,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:51" (1/1) ... [2020-07-20 13:05:51,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:51" (1/1) ... [2020-07-20 13:05:51,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:51" (1/1) ... [2020-07-20 13:05:51,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:51" (1/1) ... [2020-07-20 13:05:51,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:51" (1/1) ... [2020-07-20 13:05:51,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:51" (1/1) ... [2020-07-20 13:05:51,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:51" (1/1) ... [2020-07-20 13:05:51,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:05:51,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:05:51,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:05:51,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:05:51,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:51" (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 13:05:51,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:05:51,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:05:51,684 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-07-20 13:05:51,684 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-20 13:05:51,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:05:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:05:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-07-20 13:05:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:05:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 13:05:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:05:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:05:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:05:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 13:05:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-20 13:05:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:05:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:05:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:05:52,040 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:05:52,040 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 13:05:52,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:05:52 BoogieIcfgContainer [2020-07-20 13:05:52,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:05:52,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:05:52,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:05:52,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:05:52,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:05:51" (1/3) ... [2020-07-20 13:05:52,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac5f032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:05:52, skipping insertion in model container [2020-07-20 13:05:52,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:51" (2/3) ... [2020-07-20 13:05:52,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac5f032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:05:52, skipping insertion in model container [2020-07-20 13:05:52,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:05:52" (3/3) ... [2020-07-20 13:05:52,055 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-07-20 13:05:52,067 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:05:52,075 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:05:52,090 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:05:52,115 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:05:52,115 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:05:52,115 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:05:52,115 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:05:52,116 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:05:52,116 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:05:52,116 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:05:52,116 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:05:52,138 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-07-20 13:05:52,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 13:05:52,146 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:05:52,147 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] [2020-07-20 13:05:52,147 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:05:52,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:05:52,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-07-20 13:05:52,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:05:52,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463648018] [2020-07-20 13:05:52,165 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 13:05:52,282 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:05:52,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:05:52,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 13:05:52,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:05:52,321 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 13:05:52,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:05:52,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463648018] [2020-07-20 13:05:52,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:05:52,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 13:05:52,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588838717] [2020-07-20 13:05:52,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 13:05:52,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:05:52,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 13:05:52,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:05:52,348 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2020-07-20 13:05:52,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:05:52,376 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-07-20 13:05:52,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 13:05:52,377 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2020-07-20 13:05:52,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:05:52,389 INFO L225 Difference]: With dead ends: 86 [2020-07-20 13:05:52,390 INFO L226 Difference]: Without dead ends: 43 [2020-07-20 13:05:52,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 13:05:52,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-20 13:05:52,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-07-20 13:05:52,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-20 13:05:52,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-07-20 13:05:52,440 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-07-20 13:05:52,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:05:52,441 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-07-20 13:05:52,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 13:05:52,441 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-07-20 13:05:52,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 13:05:52,443 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:05:52,443 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] [2020-07-20 13:05:52,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:05:52,657 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:05:52,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:05:52,659 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-07-20 13:05:52,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:05:52,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698753019] [2020-07-20 13:05:52,660 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 13:05:52,737 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:05:52,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:05:52,738 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:05:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:05:52,757 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:05:52,785 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:05:52,785 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:05:53,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:05:53,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:05:53 BoogieIcfgContainer [2020-07-20 13:05:53,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:05:53,042 INFO L168 Benchmark]: Toolchain (without parser) took 1883.58 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 103.0 MB in the beginning and 112.0 MB in the end (delta: -9.1 MB). Peak memory consumption was 53.3 MB. Max. memory is 7.1 GB. [2020-07-20 13:05:53,043 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 13:05:53,044 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.01 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 102.5 MB in the beginning and 179.2 MB in the end (delta: -76.6 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-07-20 13:05:53,045 INFO L168 Benchmark]: Boogie Preprocessor took 84.32 ms. Allocated memory is still 200.8 MB. Free memory was 179.2 MB in the beginning and 176.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-20 13:05:53,046 INFO L168 Benchmark]: RCFGBuilder took 418.65 ms. Allocated memory is still 200.8 MB. Free memory was 176.7 MB in the beginning and 154.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-07-20 13:05:53,047 INFO L168 Benchmark]: TraceAbstraction took 992.46 ms. Allocated memory is still 200.8 MB. Free memory was 153.9 MB in the beginning and 112.0 MB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. [2020-07-20 13:05:53,051 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 382.01 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 102.5 MB in the beginning and 179.2 MB in the end (delta: -76.6 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.32 ms. Allocated memory is still 200.8 MB. Free memory was 179.2 MB in the beginning and 176.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 418.65 ms. Allocated memory is still 200.8 MB. Free memory was 176.7 MB in the beginning and 154.5 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 992.46 ms. Allocated memory is still 200.8 MB. Free memory was 153.9 MB in the beginning and 112.0 MB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 80. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; VAL [\old(huge_floor)=0, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L88] double x = 0.0 / 0.0; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L89] CALL, EXPR floor_double(x) VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=8365, i1=11797, x=4] [L26] COND TRUE j0 < 20 VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=8365, i1=11797, j0=0, x=4] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=8365, i1=11797, j0=0, x=4] [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; VAL [\old(x)=4, \result=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=8365, i1=11797, j0=0, x=4] [L89] RET, EXPR floor_double(x) VAL [floor_double(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L89] double res = floor_double(x); [L92] CALL, EXPR isnan_double(res) VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L80] return x != x; VAL [\old(x)=4, \result=0, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L92] RET, EXPR isnan_double(res) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, isnan_double(res)=0, res=4, x=4] [L92] COND TRUE !isnan_double(res) [L93] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=4, x=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 47 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 68 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...