/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/float_req_bl_1232a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:06:16,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:06:16,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:06:16,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:06:16,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:06:16,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:06:16,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:06:16,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:06:16,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:06:16,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:06:16,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:06:16,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:06:16,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:06:16,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:06:16,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:06:16,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:06:16,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:06:16,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:06:16,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:06:16,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:06:16,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:06:16,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:06:16,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:06:16,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:06:16,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 13:06:16,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 13:06:16,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 13:06:16,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 13:06:16,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 13:06:16,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 13:06:16,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 13:06:16,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 13:06:16,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 13:06:16,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:06:16,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:06:16,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:06:16,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 13:06:16,199 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:06:16,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:06:16,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:06:16,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:06:16,201 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:06:16,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:06:16,204 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:06:16,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:06:16,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:06:16,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:06:16,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:06:16,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:06:16,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:06:16,206 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:06:16,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:06:16,206 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:06:16,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:06:16,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:06:16,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:06:16,207 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:06:16,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:06:16,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:06:16,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:06:16,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:06:16,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:06:16,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:06:16,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:16,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:06:16,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:06:16,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 13:06:16,527 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:06:16,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:06:16,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:06:16,551 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:06:16,552 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:06:16,553 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c [2020-07-20 13:06:16,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/456f88ac5/6d89300164404baaa1bcf07cb221e984/FLAG70cf15670 [2020-07-20 13:06:17,084 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:06:17,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c [2020-07-20 13:06:17,094 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/456f88ac5/6d89300164404baaa1bcf07cb221e984/FLAG70cf15670 [2020-07-20 13:06:17,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/456f88ac5/6d89300164404baaa1bcf07cb221e984 [2020-07-20 13:06:17,465 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:06:17,468 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:06:17,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:06:17,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:06:17,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:06:17,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:06:17" (1/1) ... [2020-07-20 13:06:17,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@793f9d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:17, skipping insertion in model container [2020-07-20 13:06:17,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:06:17" (1/1) ... [2020-07-20 13:06:17,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:06:17,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:06:17,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:06:17,689 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:06:17,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:06:17,826 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:06:17,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:17 WrapperNode [2020-07-20 13:06:17,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:06:17,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:06:17,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:06:17,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:06:17,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:17" (1/1) ... [2020-07-20 13:06:17,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:17" (1/1) ... [2020-07-20 13:06:17,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:17" (1/1) ... [2020-07-20 13:06:17,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:17" (1/1) ... [2020-07-20 13:06:17,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:17" (1/1) ... [2020-07-20 13:06:17,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:17" (1/1) ... [2020-07-20 13:06:17,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:17" (1/1) ... [2020-07-20 13:06:17,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:06:17,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:06:17,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:06:17,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:06:17,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:17" (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 13:06:17,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:06:17,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:06:17,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-07-20 13:06:17,945 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2020-07-20 13:06:17,947 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-07-20 13:06:17,947 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:06:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:06:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-20 13:06:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-07-20 13:06:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:06:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 13:06:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:06:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:06:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2020-07-20 13:06:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-07-20 13:06:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:06:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:06:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:06:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:06:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 13:06:18,316 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:06:18,316 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 13:06:18,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:06:18 BoogieIcfgContainer [2020-07-20 13:06:18,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:06:18,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:06:18,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:06:18,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:06:18,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:06:17" (1/3) ... [2020-07-20 13:06:18,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645ada30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:06:18, skipping insertion in model container [2020-07-20 13:06:18,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:06:17" (2/3) ... [2020-07-20 13:06:18,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645ada30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:06:18, skipping insertion in model container [2020-07-20 13:06:18,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:06:18" (3/3) ... [2020-07-20 13:06:18,329 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2020-07-20 13:06:18,340 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:06:18,347 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:06:18,361 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:06:18,383 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:06:18,383 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:06:18,383 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:06:18,383 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:06:18,383 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:06:18,384 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:06:18,384 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:06:18,384 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:06:18,404 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-07-20 13:06:18,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 13:06:18,412 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:18,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:06:18,413 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:18,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:18,419 INFO L82 PathProgramCache]: Analyzing trace with hash -411440866, now seen corresponding path program 1 times [2020-07-20 13:06:18,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:18,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694194762] [2020-07-20 13:06:18,427 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 13:06:18,530 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:06:18,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:06:18,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 13:06:18,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:06:18,563 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 13:06:18,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:06:18,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694194762] [2020-07-20 13:06:18,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:06:18,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 13:06:18,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313587691] [2020-07-20 13:06:18,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 13:06:18,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:06:18,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 13:06:18,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:06:18,588 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-07-20 13:06:18,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:06:18,616 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-07-20 13:06:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 13:06:18,618 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2020-07-20 13:06:18,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:06:18,628 INFO L225 Difference]: With dead ends: 79 [2020-07-20 13:06:18,628 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 13:06:18,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:06:18,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 13:06:18,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-20 13:06:18,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 13:06:18,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-20 13:06:18,678 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-07-20 13:06:18,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:06:18,678 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-20 13:06:18,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 13:06:18,679 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-20 13:06:18,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 13:06:18,681 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:18,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:06:18,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:18,895 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:18,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:18,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1480673795, now seen corresponding path program 1 times [2020-07-20 13:06:18,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:18,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744603014] [2020-07-20 13:06:18,897 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 13:06:19,001 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:06:19,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:06:19,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 13:06:19,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:06:19,047 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 13:06:19,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:06:19,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744603014] [2020-07-20 13:06:19,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:06:19,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 13:06:19,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421773131] [2020-07-20 13:06:19,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 13:06:19,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:06:19,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 13:06:19,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:06:19,052 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2020-07-20 13:06:19,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:06:19,093 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-07-20 13:06:19,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 13:06:19,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-07-20 13:06:19,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:06:19,097 INFO L225 Difference]: With dead ends: 59 [2020-07-20 13:06:19,097 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 13:06:19,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:06:19,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 13:06:19,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-20 13:06:19,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 13:06:19,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-20 13:06:19,109 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-07-20 13:06:19,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:06:19,110 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-20 13:06:19,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 13:06:19,110 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-20 13:06:19,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 13:06:19,112 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:19,112 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 13:06:19,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:19,327 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:19,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:19,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1766352133, now seen corresponding path program 1 times [2020-07-20 13:06:19,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:19,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529326028] [2020-07-20 13:06:19,330 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 13:06:19,392 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:06:19,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:06:19,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 13:06:19,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:06:19,421 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 13:06:19,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:06:19,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529326028] [2020-07-20 13:06:19,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:06:19,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 13:06:19,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736512790] [2020-07-20 13:06:19,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 13:06:19,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:06:19,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 13:06:19,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:06:19,427 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2020-07-20 13:06:19,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:06:19,458 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-07-20 13:06:19,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 13:06:19,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-07-20 13:06:19,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:06:19,460 INFO L225 Difference]: With dead ends: 63 [2020-07-20 13:06:19,461 INFO L226 Difference]: Without dead ends: 48 [2020-07-20 13:06:19,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:06:19,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-20 13:06:19,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-07-20 13:06:19,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 13:06:19,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-20 13:06:19,471 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-07-20 13:06:19,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:06:19,471 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-20 13:06:19,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 13:06:19,471 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-20 13:06:19,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 13:06:19,473 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:06:19,473 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 13:06:19,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:19,688 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:06:19,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:06:19,690 INFO L82 PathProgramCache]: Analyzing trace with hash -30599226, now seen corresponding path program 1 times [2020-07-20 13:06:19,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:06:19,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726921810] [2020-07-20 13:06:19,692 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 13:06:19,783 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:06:19,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:06:19,784 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:06:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:06:19,805 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:06:19,850 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:06:19,850 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:06:20,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:06:20,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:06:20 BoogieIcfgContainer [2020-07-20 13:06:20,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:06:20,102 INFO L168 Benchmark]: Toolchain (without parser) took 2634.74 ms. Allocated memory was 145.2 MB in the beginning and 235.4 MB in the end (delta: 90.2 MB). Free memory was 102.6 MB in the beginning and 196.6 MB in the end (delta: -94.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 13:06:20,103 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-20 13:06:20,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.83 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 102.2 MB in the beginning and 181.2 MB in the end (delta: -79.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:20,105 INFO L168 Benchmark]: Boogie Preprocessor took 50.09 ms. Allocated memory is still 202.4 MB. Free memory was 181.2 MB in the beginning and 178.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:20,105 INFO L168 Benchmark]: RCFGBuilder took 443.20 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 158.4 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-07-20 13:06:20,106 INFO L168 Benchmark]: TraceAbstraction took 1777.36 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 158.4 MB in the beginning and 196.6 MB in the end (delta: -38.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 13:06:20,110 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 357.83 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 102.2 MB in the beginning and 181.2 MB in the end (delta: -79.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.09 ms. Allocated memory is still 202.4 MB. Free memory was 181.2 MB in the beginning and 178.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 443.20 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 158.4 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1777.36 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 158.4 MB in the beginning and 196.6 MB in the end (delta: -38.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 65. Possible FailurePath: [L64] float x = 0.0f; [L65] float y = -0.0f; VAL [x=0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=0, \old(y)=4] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L13] __uint32_t w; VAL [\old(x)=0, x=0] [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=2139095041, x=0] [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=2139095041, x=0] [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=2139095041, x=0] [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; VAL [\old(x)=0, \result=0, w=2139095041, x=0] [L36] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4, __fpclassify_float(x)=0, x=0, y=4] [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; VAL [\old(x)=0, \old(y)=4, \result=4, x=0, y=4] [L66] RET, EXPR fmin_float(x, y) VAL [fmin_float(x, y)=4, x=0, y=4] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=4, res == -0.0f && __signbit_float(res) == 1=0, x=0, y=4] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=4, x=0, y=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 97 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 252 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...