/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_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 00:30:45,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 00:30:45,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 00:30:45,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 00:30:45,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 00:30:45,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 00:30:45,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 00:30:45,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 00:30:45,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 00:30:45,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 00:30:45,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 00:30:45,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 00:30:45,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 00:30:45,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 00:30:45,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 00:30:45,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 00:30:45,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 00:30:45,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 00:30:45,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 00:30:45,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 00:30:45,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 00:30:45,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 00:30:45,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 00:30:45,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 00:30:45,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 00:30:45,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 00:30:45,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 00:30:45,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 00:30:45,577 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 00:30:45,611 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 00:30:45,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 00:30:45,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 00:30:45,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 00:30:45,613 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 00:30:45,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 00:30:45,614 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 00:30:45,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 00:30:45,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 00:30:45,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 00:30:45,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 00:30:45,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 00:30:45,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 00:30:45,615 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 00:30:45,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 00:30:45,616 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 00:30:45,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 00:30:45,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 00:30:45,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 00:30:45,617 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 00:30:45,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 00:30:45,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 00:30:45,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 00:30:45,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 00:30:45,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 00:30:45,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 00:30:45,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:45,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 00:30:45,619 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 00:30:45,619 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 00:30:45,923 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 00:30:45,941 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 00:30:45,945 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 00:30:45,946 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 00:30:45,947 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 00:30:45,948 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-07-21 00:30:46,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da89397bd/90ded501ec88479db4a9e5afc3e71f53/FLAGc3d078ec9 [2020-07-21 00:30:46,467 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 00:30:46,467 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-07-21 00:30:46,474 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da89397bd/90ded501ec88479db4a9e5afc3e71f53/FLAGc3d078ec9 [2020-07-21 00:30:46,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da89397bd/90ded501ec88479db4a9e5afc3e71f53 [2020-07-21 00:30:46,836 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 00:30:46,840 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 00:30:46,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 00:30:46,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 00:30:46,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 00:30:46,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:30:46" (1/1) ... [2020-07-21 00:30:46,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26c3d14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:46, skipping insertion in model container [2020-07-21 00:30:46,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:30:46" (1/1) ... [2020-07-21 00:30:46,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 00:30:46,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 00:30:47,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:30:47,068 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 00:30:47,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:30:47,221 INFO L208 MainTranslator]: Completed translation [2020-07-21 00:30:47,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:47 WrapperNode [2020-07-21 00:30:47,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 00:30:47,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 00:30:47,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 00:30:47,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 00:30:47,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:47" (1/1) ... [2020-07-21 00:30:47,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:47" (1/1) ... [2020-07-21 00:30:47,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:47" (1/1) ... [2020-07-21 00:30:47,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:47" (1/1) ... [2020-07-21 00:30:47,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:47" (1/1) ... [2020-07-21 00:30:47,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:47" (1/1) ... [2020-07-21 00:30:47,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:47" (1/1) ... [2020-07-21 00:30:47,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 00:30:47,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 00:30:47,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 00:30:47,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 00:30:47,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:47" (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 00:30:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 00:30:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 00:30:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-07-21 00:30:47,361 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 00:30:47,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 00:30:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 00:30:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-07-21 00:30:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 00:30:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 00:30:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 00:30:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 00:30:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 00:30:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 00:30:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 00:30:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 00:30:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 00:30:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 00:30:47,707 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 00:30:47,708 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-21 00:30:47,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:30:47 BoogieIcfgContainer [2020-07-21 00:30:47,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 00:30:47,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 00:30:47,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 00:30:47,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 00:30:47,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:30:46" (1/3) ... [2020-07-21 00:30:47,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e4de5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:30:47, skipping insertion in model container [2020-07-21 00:30:47,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:30:47" (2/3) ... [2020-07-21 00:30:47,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e4de5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:30:47, skipping insertion in model container [2020-07-21 00:30:47,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:30:47" (3/3) ... [2020-07-21 00:30:47,722 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-07-21 00:30:47,734 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 00:30:47,743 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 00:30:47,760 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 00:30:47,785 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 00:30:47,785 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 00:30:47,785 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 00:30:47,786 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 00:30:47,786 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 00:30:47,786 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 00:30:47,786 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 00:30:47,786 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 00:30:47,822 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-07-21 00:30:47,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 00:30:47,836 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:30:47,837 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] [2020-07-21 00:30:47,838 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:30:47,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:30:47,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-07-21 00:30:47,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:30:47,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006399544] [2020-07-21 00:30:47,857 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 00:30:47,965 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 00:30:47,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:30:47,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 00:30:47,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:30:48,018 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 00:30:48,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 00:30:48,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006399544] [2020-07-21 00:30:48,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 00:30:48,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 00:30:48,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786949360] [2020-07-21 00:30:48,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 00:30:48,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:30:48,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 00:30:48,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 00:30:48,048 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2020-07-21 00:30:48,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:30:48,078 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-07-21 00:30:48,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 00:30:48,080 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2020-07-21 00:30:48,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:30:48,092 INFO L225 Difference]: With dead ends: 86 [2020-07-21 00:30:48,092 INFO L226 Difference]: Without dead ends: 43 [2020-07-21 00:30:48,096 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 [2020-07-21 00:30:48,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-21 00:30:48,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-07-21 00:30:48,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-21 00:30:48,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-07-21 00:30:48,141 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-07-21 00:30:48,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:30:48,142 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-07-21 00:30:48,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 00:30:48,142 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-07-21 00:30:48,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 00:30:48,144 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:30:48,144 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] [2020-07-21 00:30:48,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:48,354 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:30:48,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:30:48,355 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-07-21 00:30:48,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:30:48,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939256839] [2020-07-21 00:30:48,357 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 00:30:48,448 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:30:48,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 00:30:48,449 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 00:30:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 00:30:48,470 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 00:30:48,499 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 00:30:48,499 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 00:30:48,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:30:48,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:30:48 BoogieIcfgContainer [2020-07-21 00:30:48,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 00:30:48,752 INFO L168 Benchmark]: Toolchain (without parser) took 1913.59 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 102.3 MB in the beginning and 116.2 MB in the end (delta: -13.9 MB). Peak memory consumption was 43.7 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:48,753 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 00:30:48,754 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.68 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 101.8 MB in the beginning and 182.0 MB in the end (delta: -80.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:48,755 INFO L168 Benchmark]: Boogie Preprocessor took 57.37 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 180.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:48,756 INFO L168 Benchmark]: RCFGBuilder took 433.23 ms. Allocated memory is still 203.9 MB. Free memory was 180.1 MB in the beginning and 157.8 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:48,757 INFO L168 Benchmark]: TraceAbstraction took 1035.24 ms. Allocated memory is still 203.9 MB. Free memory was 157.2 MB in the beginning and 116.2 MB in the end (delta: 41.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. [2020-07-21 00:30:48,761 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 381.68 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 101.8 MB in the beginning and 182.0 MB in the end (delta: -80.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.37 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 180.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 433.23 ms. Allocated memory is still 203.9 MB. Free memory was 180.1 MB in the beginning and 157.8 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1035.24 ms. Allocated memory is still 203.9 MB. Free memory was 157.2 MB in the beginning and 116.2 MB in the end (delta: 41.0 MB). Peak memory consumption was 41.0 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=2147483647, i1=0, x=4] [L26] COND TRUE j0 < 20 VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2147483647, i1=0, j0=0, x=4] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2147483647, i1=0, j0=0, x=4] [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; VAL [\old(x)=4, \result=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2147483647, i1=0, 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: 0.9s, 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, 36 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 53 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...