/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_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:05:59,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:05:59,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:05:59,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:05:59,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:05:59,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:05:59,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:05:59,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:05:59,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:05:59,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:05:59,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:05:59,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:05:59,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:05:59,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:05:59,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:05:59,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:05:59,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:05:59,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:05:59,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:05:59,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:05:59,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:05:59,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:05:59,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:05:59,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:05:59,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 13:05:59,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:05:59,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:05:59,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:05:59,617 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 13:05:59,642 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:05:59,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:05:59,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:05:59,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:05:59,644 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:05:59,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:05:59,644 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:05:59,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:05:59,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:05:59,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:05:59,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:05:59,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:05:59,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:05:59,647 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:05:59,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:05:59,648 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:05:59,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:05:59,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:05:59,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:05:59,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:05:59,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:05:59,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:05:59,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:05:59,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:05:59,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:05:59,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:05:59,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:05:59,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:05:59,650 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:05:59,651 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 13:05:59,963 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:05:59,977 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:05:59,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:05:59,983 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:05:59,983 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:05:59,984 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2020-07-20 13:06:00,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc24ded9b/b8ac7a16e750467193660d2426ffbf2d/FLAG9eeb9cc60 [2020-07-20 13:06:00,517 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:06:00,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252a.c [2020-07-20 13:06:00,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc24ded9b/b8ac7a16e750467193660d2426ffbf2d/FLAG9eeb9cc60 [2020-07-20 13:06:00,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc24ded9b/b8ac7a16e750467193660d2426ffbf2d [2020-07-20 13:06:00,894 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:06:00,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:06:00,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:06:00,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:06:00,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:06:00,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:06:00" (1/1) ... [2020-07-20 13:06:00,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c3918cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:00, skipping insertion in model container [2020-07-20 13:06:00,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:06:00" (1/1) ... [2020-07-20 13:06:00,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:06:00,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:06:01,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:06:01,120 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:06:01,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:06:01,267 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:06:01,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:01 WrapperNode [2020-07-20 13:06:01,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:06:01,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:06:01,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:06:01,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:06:01,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:01" (1/1) ... [2020-07-20 13:06:01,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:01" (1/1) ... [2020-07-20 13:06:01,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:01" (1/1) ... [2020-07-20 13:06:01,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:01" (1/1) ... [2020-07-20 13:06:01,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:01" (1/1) ... [2020-07-20 13:06:01,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:01" (1/1) ... [2020-07-20 13:06:01,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:01" (1/1) ... [2020-07-20 13:06:01,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:06:01,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:06:01,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:06:01,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:06:01,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:01" (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 13:06:01,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:06:01,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:06:01,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-07-20 13:06:01,377 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-07-20 13:06:01,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-20 13:06:01,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:06:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:06:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 13:06:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-07-20 13:06:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:06:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 13:06:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:06:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:06:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-07-20 13:06:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-20 13:06:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:06:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:06:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:06:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 13:06:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:06:01,776 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:06:01,776 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 13:06:01,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:06:01 BoogieIcfgContainer [2020-07-20 13:06:01,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:06:01,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:06:01,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:06:01,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:06:01,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:06:00" (1/3) ... [2020-07-20 13:06:01,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78017557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:06:01, skipping insertion in model container [2020-07-20 13:06:01,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:01" (2/3) ... [2020-07-20 13:06:01,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78017557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:06:01, skipping insertion in model container [2020-07-20 13:06:01,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:06:01" (3/3) ... [2020-07-20 13:06:01,788 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2020-07-20 13:06:01,796 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:06:01,804 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:06:01,816 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:06:01,837 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:06:01,837 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:06:01,837 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:06:01,837 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:06:01,837 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:06:01,837 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:06:01,838 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:06:01,838 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:06:01,856 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-07-20 13:06:01,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 13:06:01,863 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:01,864 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] [2020-07-20 13:06:01,864 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:01,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:01,869 INFO L82 PathProgramCache]: Analyzing trace with hash -592398611, now seen corresponding path program 1 times [2020-07-20 13:06:01,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:01,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066515625] [2020-07-20 13:06:01,877 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 13:06:01,987 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:06:01,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:06:01,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 13:06:01,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:06:02,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:06:02,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:06:02,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066515625] [2020-07-20 13:06:02,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:06:02,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 13:06:02,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087327311] [2020-07-20 13:06:02,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 13:06:02,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:06:02,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 13:06:02,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:06:02,043 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-07-20 13:06:02,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:06:02,071 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-07-20 13:06:02,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 13:06:02,073 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-07-20 13:06:02,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:06:02,083 INFO L225 Difference]: With dead ends: 79 [2020-07-20 13:06:02,083 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 13:06:02,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:06:02,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 13:06:02,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-20 13:06:02,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 13:06:02,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-20 13:06:02,132 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-07-20 13:06:02,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:06:02,132 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-20 13:06:02,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 13:06:02,133 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-20 13:06:02,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 13:06:02,135 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:02,135 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 13:06:02,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:02,351 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:02,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:02,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1646954013, now seen corresponding path program 1 times [2020-07-20 13:06:02,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:02,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552557750] [2020-07-20 13:06:02,354 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:02,423 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:06:02,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:06:02,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 13:06:02,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:06:02,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:06:02,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:06:02,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552557750] [2020-07-20 13:06:02,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:06:02,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 13:06:02,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160070476] [2020-07-20 13:06:02,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 13:06:02,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:06:02,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 13:06:02,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:06:02,477 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2020-07-20 13:06:02,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:06:02,506 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-07-20 13:06:02,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 13:06:02,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-07-20 13:06:02,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:06:02,510 INFO L225 Difference]: With dead ends: 59 [2020-07-20 13:06:02,510 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 13:06:02,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:06:02,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 13:06:02,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-20 13:06:02,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 13:06:02,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-20 13:06:02,522 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-07-20 13:06:02,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:06:02,523 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-20 13:06:02,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 13:06:02,523 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-20 13:06:02,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 13:06:02,525 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:02,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:06:02,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:02,740 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:02,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:02,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1003466516, now seen corresponding path program 1 times [2020-07-20 13:06:02,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:02,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173430047] [2020-07-20 13:06:02,743 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:02,806 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:06:02,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:06:02,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 13:06:02,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:06:02,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:06:02,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:06:02,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173430047] [2020-07-20 13:06:02,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:06:02,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 13:06:02,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928967546] [2020-07-20 13:06:02,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 13:06:02,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:06:02,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 13:06:02,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:06:02,849 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2020-07-20 13:06:02,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:06:02,894 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-07-20 13:06:02,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 13:06:02,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-07-20 13:06:02,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:06:02,898 INFO L225 Difference]: With dead ends: 63 [2020-07-20 13:06:02,898 INFO L226 Difference]: Without dead ends: 48 [2020-07-20 13:06:02,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:06:02,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-20 13:06:02,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-07-20 13:06:02,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 13:06:02,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-20 13:06:02,921 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-07-20 13:06:02,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:06:02,922 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-20 13:06:02,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 13:06:02,922 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-20 13:06:02,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 13:06:02,927 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:02,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:06:03,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:03,142 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:03,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:03,143 INFO L82 PathProgramCache]: Analyzing trace with hash -793484843, now seen corresponding path program 1 times [2020-07-20 13:06:03,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:03,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146692532] [2020-07-20 13:06:03,145 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:03,247 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:06:03,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:06:03,248 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:06:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:06:03,266 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:06:03,311 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:06:03,311 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:06:03,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:03,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:06:03 BoogieIcfgContainer [2020-07-20 13:06:03,556 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:06:03,558 INFO L168 Benchmark]: Toolchain (without parser) took 2661.53 ms. Allocated memory was 144.2 MB in the beginning and 231.7 MB in the end (delta: 87.6 MB). Free memory was 100.8 MB in the beginning and 193.0 MB in the end (delta: -92.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 13:06:03,559 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-20 13:06:03,560 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.96 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 100.4 MB in the beginning and 178.8 MB in the end (delta: -78.4 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:03,562 INFO L168 Benchmark]: Boogie Preprocessor took 43.11 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 176.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:03,563 INFO L168 Benchmark]: RCFGBuilder took 467.97 ms. Allocated memory is still 200.8 MB. Free memory was 176.7 MB in the beginning and 155.9 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:03,564 INFO L168 Benchmark]: TraceAbstraction took 1774.53 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 155.3 MB in the beginning and 193.0 MB in the end (delta: -37.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 13:06:03,568 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 369.96 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 100.4 MB in the beginning and 178.8 MB in the end (delta: -78.4 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.11 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 176.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 467.97 ms. Allocated memory is still 200.8 MB. Free memory was 176.7 MB in the beginning and 155.9 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1774.53 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 155.3 MB in the beginning and 193.0 MB in the end (delta: -37.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 79. Possible FailurePath: [L79] double x = -0.0; [L80] double y = 0.0; VAL [y=0] [L81] CALL, EXPR fmax_double(x, y) VAL [\old(x)=4, \old(y)=0] [L52] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4] [L24] __uint32_t msw, lsw; VAL [\old(x)=4, x=4] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4, lsw=-4294967295, msw=-2147483649, x=4] [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4, lsw=-4294967295, msw=-2147483649, x=4] [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4, lsw=-4294967295, msw=-2147483649, x=4] [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; VAL [\old(x)=4, \result=0, lsw=-4294967295, msw=-2147483649, x=4] [L52] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4, \old(y)=0, __fpclassify_double(x)=0, x=4, y=0] [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; VAL [\old(x)=4, \old(y)=0, \result=0, x=4, y=0] [L81] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=0, x=4, y=0] [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=4, y=0] [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() VAL [res=0, x=4, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 97 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 258 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...