/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:02:08,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:02:08,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:02:08,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:02:08,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:02:08,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:02:08,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:02:08,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:02:08,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:02:08,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:02:08,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:02:08,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:02:08,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:02:08,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:02:08,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:02:08,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:02:08,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:02:08,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:02:08,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:02:08,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:02:08,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:02:08,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:02:08,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:02:08,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:02:08,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:02:09,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:02:09,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:02:09,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:02:09,007 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 22:02:09,041 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:02:09,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:02:09,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:02:09,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:02:09,045 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:02:09,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:02:09,045 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:02:09,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:02:09,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:02:09,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:02:09,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:02:09,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:02:09,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:02:09,047 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:02:09,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:02:09,048 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:02:09,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:02:09,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:02:09,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:02:09,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:02:09,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:02:09,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:02:09,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:02:09,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:02:09,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:02:09,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:02:09,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:09,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:02:09,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:02:09,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 22:02:09,368 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:02:09,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:02:09,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:02:09,393 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:02:09,395 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:02:09,396 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-07-21 22:02:09,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/155a4d09c/ca4173427ec14c16959bfa4e17993c27/FLAG3d33281f4 [2020-07-21 22:02:09,929 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:02:09,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-07-21 22:02:09,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/155a4d09c/ca4173427ec14c16959bfa4e17993c27/FLAG3d33281f4 [2020-07-21 22:02:10,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/155a4d09c/ca4173427ec14c16959bfa4e17993c27 [2020-07-21 22:02:10,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:02:10,321 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:02:10,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:02:10,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:02:10,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:02:10,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:02:10" (1/1) ... [2020-07-21 22:02:10,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a1bc84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:10, skipping insertion in model container [2020-07-21 22:02:10,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:02:10" (1/1) ... [2020-07-21 22:02:10,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:02:10,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:02:10,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:02:10,580 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:02:10,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:02:10,626 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:02:10,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:10 WrapperNode [2020-07-21 22:02:10,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:02:10,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:02:10,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:02:10,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:02:10,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:10" (1/1) ... [2020-07-21 22:02:10,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:10" (1/1) ... [2020-07-21 22:02:10,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:10" (1/1) ... [2020-07-21 22:02:10,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:10" (1/1) ... [2020-07-21 22:02:10,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:10" (1/1) ... [2020-07-21 22:02:10,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:10" (1/1) ... [2020-07-21 22:02:10,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:10" (1/1) ... [2020-07-21 22:02:10,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:02:10,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:02:10,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:02:10,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:02:10,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:02:10,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:02:10,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:02:10,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 22:02:10,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-07-21 22:02:10,829 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-07-21 22:02:10,829 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:02:10,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:02:10,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-21 22:02:10,829 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 22:02:10,830 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-07-21 22:02:10,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 22:02:10,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 22:02:10,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 22:02:10,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 22:02:10,830 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-07-21 22:02:10,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:02:10,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:02:10,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:02:10,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 22:02:10,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 22:02:11,212 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:02:11,212 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-21 22:02:11,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:11 BoogieIcfgContainer [2020-07-21 22:02:11,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:02:11,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:02:11,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:02:11,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:02:11,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:02:10" (1/3) ... [2020-07-21 22:02:11,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64354ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:02:11, skipping insertion in model container [2020-07-21 22:02:11,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:10" (2/3) ... [2020-07-21 22:02:11,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64354ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:02:11, skipping insertion in model container [2020-07-21 22:02:11,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:11" (3/3) ... [2020-07-21 22:02:11,224 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2020-07-21 22:02:11,233 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:02:11,240 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:02:11,252 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:02:11,275 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:02:11,275 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:02:11,276 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:02:11,276 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:02:11,276 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:02:11,276 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:02:11,276 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:02:11,276 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:02:11,294 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-07-21 22:02:11,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 22:02:11,301 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:11,302 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] [2020-07-21 22:02:11,302 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:11,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:11,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1800374877, now seen corresponding path program 1 times [2020-07-21 22:02:11,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:11,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350781313] [2020-07-21 22:02:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:11,424 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:02:11,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:02:11,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 22:02:11,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:02:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:02:11,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:02:11,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350781313] [2020-07-21 22:02:11,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:02:11,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 22:02:11,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244595751] [2020-07-21 22:02:11,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 22:02:11,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:02:11,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 22:02:11,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 22:02:11,489 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2020-07-21 22:02:11,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:02:11,518 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2020-07-21 22:02:11,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 22:02:11,520 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2020-07-21 22:02:11,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:02:11,530 INFO L225 Difference]: With dead ends: 69 [2020-07-21 22:02:11,530 INFO L226 Difference]: Without dead ends: 37 [2020-07-21 22:02:11,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 22:02:11,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-21 22:02:11,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-21 22:02:11,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-21 22:02:11,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2020-07-21 22:02:11,579 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 27 [2020-07-21 22:02:11,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:02:11,580 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2020-07-21 22:02:11,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 22:02:11,581 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2020-07-21 22:02:11,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 22:02:11,583 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:11,583 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] [2020-07-21 22:02:11,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:11,799 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:11,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:11,800 INFO L82 PathProgramCache]: Analyzing trace with hash 283227385, now seen corresponding path program 1 times [2020-07-21 22:02:11,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:11,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166696281] [2020-07-21 22:02:11,803 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:11,875 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:02:11,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:02:11,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 22:02:11,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:02:11,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:02:11,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:02:11,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166696281] [2020-07-21 22:02:11,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:02:11,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 22:02:11,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884000065] [2020-07-21 22:02:11,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 22:02:11,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:02:11,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 22:02:11,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 22:02:11,940 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 4 states. [2020-07-21 22:02:11,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:02:11,967 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2020-07-21 22:02:11,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 22:02:11,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-07-21 22:02:11,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:02:11,972 INFO L225 Difference]: With dead ends: 47 [2020-07-21 22:02:11,972 INFO L226 Difference]: Without dead ends: 41 [2020-07-21 22:02:11,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 22:02:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-21 22:02:11,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-21 22:02:11,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-21 22:02:11,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-07-21 22:02:11,984 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2020-07-21 22:02:11,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:02:11,985 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-07-21 22:02:11,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 22:02:11,985 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-07-21 22:02:11,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 22:02:11,986 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:11,987 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, 1] [2020-07-21 22:02:12,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:12,200 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:12,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:12,201 INFO L82 PathProgramCache]: Analyzing trace with hash 827998108, now seen corresponding path program 1 times [2020-07-21 22:02:12,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:12,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335780477] [2020-07-21 22:02:12,203 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 [2020-07-21 22:02:12,266 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:02:12,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:02:12,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 22:02:12,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:02:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:02:12,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:02:12,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335780477] [2020-07-21 22:02:12,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:02:12,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 22:02:12,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666558877] [2020-07-21 22:02:12,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 22:02:12,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:02:12,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 22:02:12,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 22:02:12,301 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 4 states. [2020-07-21 22:02:12,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:02:12,330 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-07-21 22:02:12,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 22:02:12,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-07-21 22:02:12,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:02:12,333 INFO L225 Difference]: With dead ends: 51 [2020-07-21 22:02:12,333 INFO L226 Difference]: Without dead ends: 45 [2020-07-21 22:02:12,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 22:02:12,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-21 22:02:12,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-07-21 22:02:12,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-21 22:02:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-07-21 22:02:12,343 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2020-07-21 22:02:12,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:02:12,343 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-07-21 22:02:12,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 22:02:12,344 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-07-21 22:02:12,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 22:02:12,345 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:12,345 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, 1] [2020-07-21 22:02:12,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:12,561 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:12,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:12,562 INFO L82 PathProgramCache]: Analyzing trace with hash 631484603, now seen corresponding path program 1 times [2020-07-21 22:02:12,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:12,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686906156] [2020-07-21 22:02:12,563 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 [2020-07-21 22:02:12,653 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:02:12,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 22:02:12,653 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:02:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 22:02:12,678 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:02:12,729 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 22:02:12,729 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 22:02:12,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:12,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:02:12 BoogieIcfgContainer [2020-07-21 22:02:12,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:02:12,975 INFO L168 Benchmark]: Toolchain (without parser) took 2655.92 ms. Allocated memory was 140.5 MB in the beginning and 233.8 MB in the end (delta: 93.3 MB). Free memory was 105.6 MB in the beginning and 190.6 MB in the end (delta: -85.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:12,976 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 140.5 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 22:02:12,977 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.32 ms. Allocated memory is still 140.5 MB. Free memory was 105.2 MB in the beginning and 94.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:12,978 INFO L168 Benchmark]: Boogie Preprocessor took 141.30 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 94.3 MB in the beginning and 182.1 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:12,979 INFO L168 Benchmark]: RCFGBuilder took 446.94 ms. Allocated memory is still 204.5 MB. Free memory was 182.1 MB in the beginning and 162.9 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:12,980 INFO L168 Benchmark]: TraceAbstraction took 1754.27 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 162.3 MB in the beginning and 190.6 MB in the end (delta: -28.3 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:12,984 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 140.5 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 301.32 ms. Allocated memory is still 140.5 MB. Free memory was 105.2 MB in the beginning and 94.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.30 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 94.3 MB in the beginning and 182.1 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 446.94 ms. Allocated memory is still 204.5 MB. Free memory was 182.1 MB in the beginning and 162.9 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1754.27 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 162.3 MB in the beginning and 190.6 MB in the end (delta: -28.3 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 78]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 77, overapproximation of someBinaryArithmeticDOUBLEoperation at line 65. Possible FailurePath: [L64] double x = __VERIFIER_nondet_double(); [L65] double y = 0.0 / 0.0; VAL [x=3] [L72] CALL, EXPR isnan_double(x) VAL [\old(x)=3] [L16] return x != x; VAL [\old(x)=3, \result=0, x=3] [L72] RET, EXPR isnan_double(x) VAL [isnan_double(x)=0, x=3] [L72] COND TRUE !isnan_double(x) [L74] 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=-2147483649, x=3] [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=3, lsw=11797, msw=-2147483649, x=3] [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=3, lsw=11797, msw=-2147483649, 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=-2147483649, 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] [L74] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4, x=3, y=4] [L74] double res = fmax_double(x, y); [L77] COND TRUE res != x VAL [res=4, x=3, y=4] [L78] __VERIFIER_error() VAL [res=4, x=3, y=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 134 SDtfs, 0 SDslu, 156 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 117 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 2761 SizeOfPredicates, 0 NumberOfNonLiveVariables, 308 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...