/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_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:05:58,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:05:58,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:05:58,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:05:58,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:05:58,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:05:58,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:05:58,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:05:59,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:05:59,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:05:59,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:05:59,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:05:59,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:05:59,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:05:59,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:05:59,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:05:59,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:05:59,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:05:59,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:05:59,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:05:59,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:05:59,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:05:59,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:05:59,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:05:59,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 13:05:59,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:05:59,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:05:59,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:05:59,055 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 13:05:59,074 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:05:59,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:05:59,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:05:59,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:05:59,076 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:05:59,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:05:59,077 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:05:59,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:05:59,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:05:59,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:05:59,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:05:59,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:05:59,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:05:59,078 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:05:59,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:05:59,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:05:59,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:05:59,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:05:59,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:05:59,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:05:59,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:05:59,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:05:59,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:05:59,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:05:59,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:05:59,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:05:59,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:05:59,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:05:59,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:05:59,082 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 13:05:59,384 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:05:59,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:05:59,409 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:05:59,411 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:05:59,411 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:05:59,413 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-07-20 13:05:59,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b59551350/1be606fc70324833a2e5b001dd0c8b84/FLAG0936d10cd [2020-07-20 13:05:59,899 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:05:59,899 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-07-20 13:05:59,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b59551350/1be606fc70324833a2e5b001dd0c8b84/FLAG0936d10cd [2020-07-20 13:06:00,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b59551350/1be606fc70324833a2e5b001dd0c8b84 [2020-07-20 13:06:00,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:06:00,348 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:06:00,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:06:00,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:06:00,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:06:00,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:06:00" (1/1) ... [2020-07-20 13:06:00,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e332ecd 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 13:06:00,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:06:00" (1/1) ... [2020-07-20 13:06:00,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:06:00,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:06:00,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:06:00,662 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:06:00,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:06:00,826 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:06:00,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:00 WrapperNode [2020-07-20 13:06:00,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:06:00,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:06:00,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:06:00,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:06:00,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:00" (1/1) ... [2020-07-20 13:06:00,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:00" (1/1) ... [2020-07-20 13:06:00,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:00" (1/1) ... [2020-07-20 13:06:00,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:00" (1/1) ... [2020-07-20 13:06:00,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:00" (1/1) ... [2020-07-20 13:06:00,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:00" (1/1) ... [2020-07-20 13:06:00,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:00" (1/1) ... [2020-07-20 13:06:00,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:06:00,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:06:00,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:06:00,873 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:06:00,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:00" (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 13:06:00,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:06:00,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:06:00,937 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-20 13:06:00,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-07-20 13:06:00,937 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-07-20 13:06:00,938 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:06:00,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:06:00,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 13:06:00,939 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-20 13:06:00,939 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-07-20 13:06:00,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:06:00,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 13:06:00,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:06:00,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:06:00,941 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-07-20 13:06:00,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:06:00,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:06:00,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:06:00,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:06:00,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 13:06:01,265 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:06:01,265 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 13:06:01,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:06:01 BoogieIcfgContainer [2020-07-20 13:06:01,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:06:01,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:06:01,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:06:01,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:06:01,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:06:00" (1/3) ... [2020-07-20 13:06:01,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffa2708 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 13:06:01,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:00" (2/3) ... [2020-07-20 13:06:01,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffa2708 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 13:06:01,278 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 13:06:01,280 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2020-07-20 13:06:01,292 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:06:01,300 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:06:01,315 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:06:01,342 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:06:01,342 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:06:01,342 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:06:01,342 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:06:01,343 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:06:01,343 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:06:01,343 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:06:01,343 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:06:01,363 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-20 13:06:01,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 13:06:01,370 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:01,376 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 13:06:01,377 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:01,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:01,386 INFO L82 PathProgramCache]: Analyzing trace with hash 397720622, now seen corresponding path program 1 times [2020-07-20 13:06:01,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:01,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194530314] [2020-07-20 13:06:01,401 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 13:06:01,514 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:06:01,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:06:01,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 13:06:01,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:06:01,552 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 13:06:01,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:06:01,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194530314] [2020-07-20 13:06:01,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:06:01,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 13:06:01,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126138359] [2020-07-20 13:06:01,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 13:06:01,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:06:01,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 13:06:01,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:06:01,577 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-07-20 13:06:01,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:06:01,602 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2020-07-20 13:06:01,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 13:06:01,604 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2020-07-20 13:06:01,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:06:01,613 INFO L225 Difference]: With dead ends: 71 [2020-07-20 13:06:01,613 INFO L226 Difference]: Without dead ends: 36 [2020-07-20 13:06:01,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 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 13:06:01,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-20 13:06:01,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-07-20 13:06:01,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-20 13:06:01,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-07-20 13:06:01,664 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2020-07-20 13:06:01,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:06:01,664 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-07-20 13:06:01,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 13:06:01,665 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-07-20 13:06:01,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 13:06:01,669 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:01,669 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, 1] [2020-07-20 13:06:01,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:01,883 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:01,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:01,885 INFO L82 PathProgramCache]: Analyzing trace with hash -54823803, now seen corresponding path program 1 times [2020-07-20 13:06:01,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:01,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393465179] [2020-07-20 13:06:01,886 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 13:06:01,978 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:06:01,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:06:01,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 13:06:01,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:06:02,023 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 13:06:02,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:06:02,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393465179] [2020-07-20 13:06:02,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:06:02,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 13:06:02,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489897573] [2020-07-20 13:06:02,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 13:06:02,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:06:02,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 13:06:02,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:06:02,028 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2020-07-20 13:06:02,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:06:02,059 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-07-20 13:06:02,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 13:06:02,059 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-07-20 13:06:02,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:06:02,063 INFO L225 Difference]: With dead ends: 51 [2020-07-20 13:06:02,063 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 13:06:02,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 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 13:06:02,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 13:06:02,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-20 13:06:02,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 13:06:02,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-20 13:06:02,075 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2020-07-20 13:06:02,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:06:02,076 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-20 13:06:02,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 13:06:02,076 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-20 13:06:02,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 13:06:02,077 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:02,078 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, 1, 1, 1, 1] [2020-07-20 13:06:02,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:02,292 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:02,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:02,293 INFO L82 PathProgramCache]: Analyzing trace with hash -268248811, now seen corresponding path program 1 times [2020-07-20 13:06:02,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:02,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669567929] [2020-07-20 13:06:02,295 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 13:06:02,359 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:06:02,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:06:02,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 13:06:02,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:06:02,402 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 13:06:02,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:06:02,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669567929] [2020-07-20 13:06:02,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:06:02,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 13:06:02,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481016674] [2020-07-20 13:06:02,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 13:06:02,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:06:02,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 13:06:02,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:06:02,407 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2020-07-20 13:06:02,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:06:02,449 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-07-20 13:06:02,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 13:06:02,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-07-20 13:06:02,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:06:02,453 INFO L225 Difference]: With dead ends: 55 [2020-07-20 13:06:02,453 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 13:06:02,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 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 13:06:02,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 13:06:02,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-07-20 13:06:02,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 13:06:02,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-20 13:06:02,469 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2020-07-20 13:06:02,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:06:02,470 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-20 13:06:02,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 13:06:02,471 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-20 13:06:02,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 13:06:02,472 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:02,472 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, 1, 1, 1, 1] [2020-07-20 13:06:02,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:02,687 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:02,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:02,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1239302998, now seen corresponding path program 1 times [2020-07-20 13:06:02,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:02,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025045581] [2020-07-20 13:06:02,690 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 13:06:02,773 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:06:02,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:06:02,773 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:06:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:06:02,793 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:06:02,835 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:06:02,836 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:06:03,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:03,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:06:03 BoogieIcfgContainer [2020-07-20 13:06:03,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:06:03,087 INFO L168 Benchmark]: Toolchain (without parser) took 2738.33 ms. Allocated memory was 138.4 MB in the beginning and 234.9 MB in the end (delta: 96.5 MB). Free memory was 102.8 MB in the beginning and 196.2 MB in the end (delta: -93.5 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:03,088 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 138.4 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 13:06:03,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 478.12 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 102.4 MB in the beginning and 180.9 MB in the end (delta: -78.6 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:03,094 INFO L168 Benchmark]: Boogie Preprocessor took 44.46 ms. Allocated memory is still 202.9 MB. Free memory was 180.9 MB in the beginning and 179.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:03,095 INFO L168 Benchmark]: RCFGBuilder took 397.90 ms. Allocated memory is still 202.9 MB. Free memory was 178.5 MB in the beginning and 159.7 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:03,096 INFO L168 Benchmark]: TraceAbstraction took 1811.02 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 159.7 MB in the beginning and 196.2 MB in the end (delta: -36.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 13:06:03,101 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 138.4 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 478.12 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 102.4 MB in the beginning and 180.9 MB in the end (delta: -78.6 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.46 ms. Allocated memory is still 202.9 MB. Free memory was 180.9 MB in the beginning and 179.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 397.90 ms. Allocated memory is still 202.9 MB. Free memory was 178.5 MB in the beginning and 159.7 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1811.02 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 159.7 MB in the beginning and 196.2 MB in the end (delta: -36.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L67] double x = 0.0 / 0.0; [L68] double y = 0.0 / 0.0; [L69] CALL, EXPR fmax_double(x, y) VAL [\old(x)=3, \old(y)=4] [L55] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=3] [L27] __uint32_t msw, lsw; VAL [\old(x)=3, x=3] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=3, lsw=11797, msw=-2148532223, x=3] [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=3, lsw=11797, msw=-2148532223, x=3] [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=3, lsw=11797, msw=-2148532223, x=3] [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; VAL [\old(x)=3, \result=0, lsw=11797, msw=-2148532223, x=3] [L55] RET, EXPR __fpclassify_double(x) VAL [\old(x)=3, \old(y)=4, __fpclassify_double(x)=0, x=3, y=4] [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; VAL [\old(x)=3, \old(y)=4, \result=4, x=3, y=4] [L69] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4, x=3, y=4] [L69] double res = fmax_double(x, y); [L71] CALL, EXPR isnan_double(res) VAL [\old(x)=4] [L16] return x != x; VAL [\old(x)=4, \result=0, x=4] [L71] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4, x=3, y=4] [L71] COND TRUE !isnan_double(res) [L72] __VERIFIER_error() VAL [res=4, x=3, y=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 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: 129 SDtfs, 0 SDslu, 152 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 113 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 279 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...