/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_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:05:59,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:05:59,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:05:59,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:05:59,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:05:59,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:05:59,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:05:59,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:05:59,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:05:59,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:05:59,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:05:59,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:05:59,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:05:59,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:05:59,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:05:59,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:05:59,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:05:59,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:05:59,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:05:59,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:05:59,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:06:00,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:06:00,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:06:00,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:06:00,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 13:06:00,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:06:00,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:06:00,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:06:00,014 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 13:06:00,029 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:06:00,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:06:00,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:06:00,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:06:00,031 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:06:00,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:06:00,031 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:06:00,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:06:00,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:06:00,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:06:00,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:06:00,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:06:00,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:06:00,032 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:06:00,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:06:00,033 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:06:00,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:06:00,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:06:00,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:06:00,034 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:06:00,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:06:00,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:06:00,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:06:00,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:06:00,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:06:00,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:06:00,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:00,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:06:00,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:06:00,035 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 13:06:00,393 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:06:00,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:06:00,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:06:00,412 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:06:00,413 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:06:00,414 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-07-20 13:06:00,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1efb7f05/b5e680099a944717a25876270d51aec1/FLAGcd3f73343 [2020-07-20 13:06:00,922 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:06:00,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-07-20 13:06:00,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1efb7f05/b5e680099a944717a25876270d51aec1/FLAGcd3f73343 [2020-07-20 13:06:01,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1efb7f05/b5e680099a944717a25876270d51aec1 [2020-07-20 13:06:01,297 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:06:01,299 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:06:01,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:06:01,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:06:01,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:06:01,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:06:01" (1/1) ... [2020-07-20 13:06:01,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d231e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:01, skipping insertion in model container [2020-07-20 13:06:01,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:06:01" (1/1) ... [2020-07-20 13:06:01,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:06:01,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:06:01,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:06:01,587 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:06:01,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:06:01,751 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:06:01,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:01 WrapperNode [2020-07-20 13:06:01,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:06:01,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:06:01,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:06:01,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:06:01,767 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 13:06:01,767 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 13:06:01,777 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 13:06:01,778 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 13:06:01,789 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 13:06:01,794 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 13:06:01,796 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 13:06:01,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:06:01,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:06:01,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:06:01,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:06:01,801 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 13:06:01,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:06:01,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:06:01,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-07-20 13:06:01,869 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-07-20 13:06:01,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-20 13:06:01,870 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:06:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:06:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 13:06:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-07-20 13:06:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:06:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 13:06:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:06:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:06:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-07-20 13:06:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-20 13:06:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:06:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:06:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:06:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 13:06:01,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:06:02,220 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:06:02,221 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 13:06:02,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:06:02 BoogieIcfgContainer [2020-07-20 13:06:02,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:06:02,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:06:02,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:06:02,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:06:02,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:06:01" (1/3) ... [2020-07-20 13:06:02,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75253adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:06:02, skipping insertion in model container [2020-07-20 13:06:02,234 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 13:06:02,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75253adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:06:02, skipping insertion in model container [2020-07-20 13:06:02,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:06:02" (3/3) ... [2020-07-20 13:06:02,237 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-07-20 13:06:02,251 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:06:02,260 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:06:02,275 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:06:02,302 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:06:02,302 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:06:02,302 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:06:02,302 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:06:02,303 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:06:02,303 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:06:02,303 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:06:02,303 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:06:02,323 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-07-20 13:06:02,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 13:06:02,330 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:02,331 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 13:06:02,333 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:02,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:02,339 INFO L82 PathProgramCache]: Analyzing trace with hash -592398611, now seen corresponding path program 1 times [2020-07-20 13:06:02,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:02,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174141258] [2020-07-20 13:06:02,349 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 13:06:02,453 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:06:02,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:06:02,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 13:06:02,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:06:02,496 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 13:06:02,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:06:02,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174141258] [2020-07-20 13:06:02,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:06:02,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 13:06:02,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054099285] [2020-07-20 13:06:02,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 13:06:02,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:06:02,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 13:06:02,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:06:02,526 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-07-20 13:06:02,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:06:02,574 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-07-20 13:06:02,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 13:06:02,575 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-07-20 13:06:02,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:06:02,587 INFO L225 Difference]: With dead ends: 79 [2020-07-20 13:06:02,587 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 13:06:02,591 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 13:06:02,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 13:06:02,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-20 13:06:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 13:06:02,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-20 13:06:02,637 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-07-20 13:06:02,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:06:02,638 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-20 13:06:02,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 13:06:02,638 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-20 13:06:02,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 13:06:02,641 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:02,641 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 13:06:02,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:02,851 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:02,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:02,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1646954013, now seen corresponding path program 1 times [2020-07-20 13:06:02,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:02,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836508576] [2020-07-20 13:06:02,854 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 13:06:02,950 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:06:02,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:06:02,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 13:06:02,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:06:03,019 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 13:06:03,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:06:03,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836508576] [2020-07-20 13:06:03,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:06:03,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 13:06:03,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103117225] [2020-07-20 13:06:03,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 13:06:03,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:06:03,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 13:06:03,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:06:03,025 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2020-07-20 13:06:03,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:06:03,055 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-07-20 13:06:03,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 13:06:03,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-07-20 13:06:03,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:06:03,059 INFO L225 Difference]: With dead ends: 59 [2020-07-20 13:06:03,060 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 13:06:03,061 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 13:06:03,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 13:06:03,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-20 13:06:03,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 13:06:03,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-20 13:06:03,072 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-07-20 13:06:03,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:06:03,073 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-20 13:06:03,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 13:06:03,073 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-20 13:06:03,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 13:06:03,074 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:03,075 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 13:06:03,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:03,290 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:03,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:03,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1003466516, now seen corresponding path program 1 times [2020-07-20 13:06:03,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:03,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404293507] [2020-07-20 13:06:03,291 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 13:06:03,352 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:06:03,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:06:03,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 13:06:03,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:06:03,383 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 13:06:03,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:06:03,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404293507] [2020-07-20 13:06:03,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:06:03,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 13:06:03,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879263925] [2020-07-20 13:06:03,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 13:06:03,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:06:03,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 13:06:03,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:06:03,388 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2020-07-20 13:06:03,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:06:03,414 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-07-20 13:06:03,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 13:06:03,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-07-20 13:06:03,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:06:03,417 INFO L225 Difference]: With dead ends: 63 [2020-07-20 13:06:03,417 INFO L226 Difference]: Without dead ends: 48 [2020-07-20 13:06:03,418 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 13:06:03,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-20 13:06:03,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-07-20 13:06:03,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 13:06:03,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-20 13:06:03,427 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-07-20 13:06:03,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:06:03,428 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-20 13:06:03,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 13:06:03,428 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-20 13:06:03,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 13:06:03,430 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:03,430 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 13:06:03,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:03,647 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:03,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:03,648 INFO L82 PathProgramCache]: Analyzing trace with hash -793484843, now seen corresponding path program 1 times [2020-07-20 13:06:03,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:03,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522018828] [2020-07-20 13:06:03,649 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 13:06:03,744 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:06:03,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:06:03,744 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:06:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:06:03,767 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:06:03,806 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:06:03,806 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:06:04,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:04,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:06:04 BoogieIcfgContainer [2020-07-20 13:06:04,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:06:04,063 INFO L168 Benchmark]: Toolchain (without parser) took 2764.23 ms. Allocated memory was 137.9 MB in the beginning and 232.8 MB in the end (delta: 94.9 MB). Free memory was 103.0 MB in the beginning and 192.9 MB in the end (delta: -89.8 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:04,064 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 137.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 13:06:04,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 452.24 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 179.3 MB in the end (delta: -76.7 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:04,067 INFO L168 Benchmark]: Boogie Preprocessor took 46.54 ms. Allocated memory is still 200.8 MB. Free memory was 179.3 MB in the beginning and 176.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:04,069 INFO L168 Benchmark]: RCFGBuilder took 426.57 ms. Allocated memory is still 200.8 MB. Free memory was 176.8 MB in the beginning and 156.2 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:04,070 INFO L168 Benchmark]: TraceAbstraction took 1833.19 ms. Allocated memory was 200.8 MB in the beginning and 232.8 MB in the end (delta: 32.0 MB). Free memory was 155.6 MB in the beginning and 192.9 MB in the end (delta: -37.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 13:06:04,078 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 137.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 452.24 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 179.3 MB in the end (delta: -76.7 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.54 ms. Allocated memory is still 200.8 MB. Free memory was 179.3 MB in the beginning and 176.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 426.57 ms. Allocated memory is still 200.8 MB. Free memory was 176.8 MB in the beginning and 156.2 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1833.19 ms. Allocated memory was 200.8 MB in the beginning and 232.8 MB in the end (delta: 32.0 MB). Free memory was 155.6 MB in the beginning and 192.9 MB in the end (delta: -37.3 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 80. Possible FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; VAL [x=0] [L81] CALL, EXPR fmax_double(x, y) VAL [\old(x)=0, \old(y)=4] [L52] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0] [L24] __uint32_t msw, lsw; VAL [\old(x)=0, x=0] [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)=0, lsw=4294967297, msw=6441402369, x=0] [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=0, lsw=4294967297, msw=6441402369, x=0] [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=0, lsw=4294967297, msw=6441402369, x=0] [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; VAL [\old(x)=0, \result=0, lsw=4294967297, msw=6441402369, x=0] [L52] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=4, __fpclassify_double(x)=0, x=0, y=4] [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; VAL [\old(x)=0, \old(y)=4, \result=4, x=0, y=4] [L81] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4, x=0, y=4] [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=4, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=4] [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() VAL [res=4, x=0, y=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, 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...