./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1052b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052b.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 62b7dc6392161c86b172facfcbc82e25c42dc2f4 ........................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052b.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 62b7dc6392161c86b172facfcbc82e25c42dc2f4 ........................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:57:44,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:57:44,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:57:44,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:57:44,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:57:44,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:57:44,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:57:44,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:57:44,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:57:44,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:57:44,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:57:44,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:57:44,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:57:44,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:57:44,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:57:44,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:57:44,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:57:44,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:57:44,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:57:44,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:57:44,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:57:44,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:57:44,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:57:44,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:57:44,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:57:44,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:57:44,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:57:44,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:57:44,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:57:44,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:57:44,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:57:44,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:57:44,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:57:44,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:57:44,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:57:44,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:57:44,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:57:44,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:57:44,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:57:44,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:57:44,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:57:44,262 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:57:44,274 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:57:44,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:57:44,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:57:44,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:57:44,275 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:57:44,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:57:44,276 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:57:44,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:57:44,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:57:44,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:57:44,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:57:44,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:57:44,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:57:44,277 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:57:44,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:57:44,277 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:57:44,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:57:44,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:57:44,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:57:44,278 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:57:44,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:57:44,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:57:44,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:57:44,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:57:44,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:57:44,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:57:44,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:57:44,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:57:44,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62b7dc6392161c86b172facfcbc82e25c42dc2f4 [2019-10-22 08:57:44,305 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:57:44,319 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:57:44,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:57:44,324 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:57:44,325 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:57:44,325 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1052b.c [2019-10-22 08:57:44,389 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/data/732e6b938/534f34e71b29470aab2a275dacc1c8de/FLAGf40860d3b [2019-10-22 08:57:44,803 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:57:44,807 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/sv-benchmarks/c/float-newlib/double_req_bl_1052b.c [2019-10-22 08:57:44,815 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/data/732e6b938/534f34e71b29470aab2a275dacc1c8de/FLAGf40860d3b [2019-10-22 08:57:44,831 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/data/732e6b938/534f34e71b29470aab2a275dacc1c8de [2019-10-22 08:57:44,835 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:57:44,837 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:57:44,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:44,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:57:44,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:57:44,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:44" (1/1) ... [2019-10-22 08:57:44,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63df915c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:44, skipping insertion in model container [2019-10-22 08:57:44,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:44" (1/1) ... [2019-10-22 08:57:44,853 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:57:44,875 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:57:45,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:45,108 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:57:45,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:45,173 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:57:45,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:45 WrapperNode [2019-10-22 08:57:45,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:45,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:45,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:57:45,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:57:45,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:45" (1/1) ... [2019-10-22 08:57:45,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:45" (1/1) ... [2019-10-22 08:57:45,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:45,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:57:45,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:57:45,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:57:45,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:45" (1/1) ... [2019-10-22 08:57:45,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:45" (1/1) ... [2019-10-22 08:57:45,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:45" (1/1) ... [2019-10-22 08:57:45,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:45" (1/1) ... [2019-10-22 08:57:45,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:45" (1/1) ... [2019-10-22 08:57:45,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:45" (1/1) ... [2019-10-22 08:57:45,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:45" (1/1) ... [2019-10-22 08:57:45,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:57:45,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:57:45,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:57:45,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:57:45,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/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 [2019-10-22 08:57:45,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-10-22 08:57:45,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:57:45,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-10-22 08:57:45,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:57:45,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:57:45,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:57:45,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:57:45,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:57:45,672 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:57:45,672 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-10-22 08:57:45,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:45 BoogieIcfgContainer [2019-10-22 08:57:45,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:57:45,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:57:45,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:57:45,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:57:45,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:57:44" (1/3) ... [2019-10-22 08:57:45,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f89c541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:45, skipping insertion in model container [2019-10-22 08:57:45,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:45" (2/3) ... [2019-10-22 08:57:45,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f89c541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:45, skipping insertion in model container [2019-10-22 08:57:45,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:45" (3/3) ... [2019-10-22 08:57:45,682 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052b.c [2019-10-22 08:57:45,692 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:57:45,699 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:57:45,706 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:57:45,725 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:57:45,725 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:57:45,725 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:57:45,725 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:57:45,725 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:57:45,726 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:57:45,726 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:57:45,726 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:57:45,737 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-10-22 08:57:45,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 08:57:45,743 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:45,744 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:45,746 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:45,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:45,751 INFO L82 PathProgramCache]: Analyzing trace with hash 658478814, now seen corresponding path program 1 times [2019-10-22 08:57:45,759 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:45,759 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553771001] [2019-10-22 08:57:45,759 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:45,760 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:45,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:45,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:45,855 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553771001] [2019-10-22 08:57:45,856 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:45,856 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:57:45,857 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916979531] [2019-10-22 08:57:45,860 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:57:45,861 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:45,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:57:45,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:57:45,875 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2019-10-22 08:57:45,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:45,890 INFO L93 Difference]: Finished difference Result 72 states and 114 transitions. [2019-10-22 08:57:45,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:57:45,892 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-22 08:57:45,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:45,903 INFO L225 Difference]: With dead ends: 72 [2019-10-22 08:57:45,903 INFO L226 Difference]: Without dead ends: 34 [2019-10-22 08:57:45,906 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:57:45,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-22 08:57:45,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-10-22 08:57:45,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 08:57:45,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2019-10-22 08:57:45,944 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 13 [2019-10-22 08:57:45,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:45,944 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2019-10-22 08:57:45,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:57:45,944 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2019-10-22 08:57:45,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:57:45,945 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:45,945 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:45,945 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:45,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:45,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1562173395, now seen corresponding path program 1 times [2019-10-22 08:57:45,946 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:45,946 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229342411] [2019-10-22 08:57:45,946 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:45,946 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:45,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:46,157 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:46,157 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:57:46,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:57:46 BoogieIcfgContainer [2019-10-22 08:57:46,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:57:46,185 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:57:46,185 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:57:46,185 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:57:46,186 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:45" (3/4) ... [2019-10-22 08:57:46,191 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:57:46,191 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:57:46,193 INFO L168 Benchmark]: Toolchain (without parser) took 1355.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 943.2 MB in the beginning and 1.1 GB in the end (delta: -151.7 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:46,194 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:46,194 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 943.2 MB in the beginning and 1.2 GB in the end (delta: -215.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:46,195 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:46,195 INFO L168 Benchmark]: Boogie Preprocessor took 45.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:46,196 INFO L168 Benchmark]: RCFGBuilder took 410.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 29.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:46,196 INFO L168 Benchmark]: TraceAbstraction took 510.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:46,196 INFO L168 Benchmark]: Witness Printer took 6.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:46,199 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 335.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 943.2 MB in the beginning and 1.2 GB in the end (delta: -215.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 410.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 29.7 MB). Peak memory consumption was 29.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 510.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * Witness Printer took 6.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 106]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 89, overapproximation of someBinaryArithmeticDOUBLEoperation at line 101, overapproximation of bitwiseAnd at line 88. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L101] double x = -1.0 / 0.0; [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L26] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L102] double res = floor_double(x); [L81] __int32_t hx, lx; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L83] ieee_double_shape_type ew_u; [L84] ew_u.value = (x) [L85] EXPR ew_u.parts.msw [L85] (hx) = ew_u.parts.msw [L86] EXPR ew_u.parts.lsw [L86] (lx) = ew_u.parts.lsw [L88] hx &= 0x7fffffff [L89] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L90] hx = 0x7ff00000 - hx [L91] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L105] COND TRUE !isinf_double(res) [L106] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: 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... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 08:57:48,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:57:48,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:57:48,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:57:48,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:57:48,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:57:48,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:57:48,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:57:48,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:57:48,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:57:48,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:57:48,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:57:48,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:57:48,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:57:48,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:57:48,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:57:48,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:57:48,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:57:48,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:57:48,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:57:48,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:57:48,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:57:48,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:57:48,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:57:48,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:57:48,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:57:48,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:57:48,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:57:48,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:57:48,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:57:48,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:57:48,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:57:48,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:57:48,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:57:48,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:57:48,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:57:48,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:57:48,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:57:48,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:57:48,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:57:48,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:57:48,165 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-10-22 08:57:48,180 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:57:48,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:57:48,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:57:48,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:57:48,183 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:57:48,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:57:48,183 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:57:48,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:57:48,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:57:48,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:57:48,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:57:48,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:57:48,184 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 08:57:48,184 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 08:57:48,184 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:57:48,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:57:48,185 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:57:48,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:57:48,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:57:48,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:57:48,185 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:57:48,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:57:48,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:57:48,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:57:48,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:57:48,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:57:48,186 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-10-22 08:57:48,189 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 08:57:48,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:57:48,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 08:57:48,190 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62b7dc6392161c86b172facfcbc82e25c42dc2f4 [2019-10-22 08:57:48,216 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:57:48,226 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:57:48,229 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:57:48,230 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:57:48,231 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:57:48,231 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1052b.c [2019-10-22 08:57:48,279 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/data/173dd48f0/a300a9bbe71f43329fb7e1e9f6d504d7/FLAGa309aa027 [2019-10-22 08:57:48,709 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:57:48,710 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/sv-benchmarks/c/float-newlib/double_req_bl_1052b.c [2019-10-22 08:57:48,717 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/data/173dd48f0/a300a9bbe71f43329fb7e1e9f6d504d7/FLAGa309aa027 [2019-10-22 08:57:49,088 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/data/173dd48f0/a300a9bbe71f43329fb7e1e9f6d504d7 [2019-10-22 08:57:49,092 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:57:49,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:57:49,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:49,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:57:49,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:57:49,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@607c200f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49, skipping insertion in model container [2019-10-22 08:57:49,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,111 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:57:49,127 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:57:49,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:49,302 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:57:49,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:49,421 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:57:49,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49 WrapperNode [2019-10-22 08:57:49,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:49,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:49,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:57:49,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:57:49,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:49,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:57:49,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:57:49,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:57:49,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... [2019-10-22 08:57:49,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:57:49,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:57:49,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:57:49,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:57:49,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/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 [2019-10-22 08:57:49,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-10-22 08:57:49,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-10-22 08:57:49,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-10-22 08:57:49,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:57:49,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:57:49,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:57:49,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-10-22 08:57:49,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:57:50,599 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:57:50,599 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-10-22 08:57:50,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:50 BoogieIcfgContainer [2019-10-22 08:57:50,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:57:50,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:57:50,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:57:50,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:57:50,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:57:49" (1/3) ... [2019-10-22 08:57:50,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425d3533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:50, skipping insertion in model container [2019-10-22 08:57:50,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:49" (2/3) ... [2019-10-22 08:57:50,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425d3533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:50, skipping insertion in model container [2019-10-22 08:57:50,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:50" (3/3) ... [2019-10-22 08:57:50,607 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052b.c [2019-10-22 08:57:50,614 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:57:50,619 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:57:50,626 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:57:50,645 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:57:50,646 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:57:50,646 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:57:50,646 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:57:50,646 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:57:50,646 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:57:50,646 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:57:50,646 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:57:50,658 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-10-22 08:57:50,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 08:57:50,663 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:50,664 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:50,665 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:50,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:50,669 INFO L82 PathProgramCache]: Analyzing trace with hash 658478814, now seen corresponding path program 1 times [2019-10-22 08:57:50,676 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:57:50,676 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273952067] [2019-10-22 08:57:50,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-10-22 08:57:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:50,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 08:57:50,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:50,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:50,757 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 08:57:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:50,762 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273952067] [2019-10-22 08:57:50,762 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:50,762 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 08:57:50,763 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886361175] [2019-10-22 08:57:50,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:57:50,767 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 08:57:50,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:57:50,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:57:50,781 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2019-10-22 08:57:50,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:50,801 INFO L93 Difference]: Finished difference Result 72 states and 114 transitions. [2019-10-22 08:57:50,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:57:50,804 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-22 08:57:50,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:50,813 INFO L225 Difference]: With dead ends: 72 [2019-10-22 08:57:50,814 INFO L226 Difference]: Without dead ends: 34 [2019-10-22 08:57:50,816 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:57:50,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-22 08:57:50,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-10-22 08:57:50,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 08:57:50,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2019-10-22 08:57:50,846 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 13 [2019-10-22 08:57:50,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:50,846 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2019-10-22 08:57:50,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:57:50,847 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2019-10-22 08:57:50,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:57:50,847 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:50,847 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:51,048 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-10-22 08:57:51,048 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:51,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:51,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1562173395, now seen corresponding path program 1 times [2019-10-22 08:57:51,050 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:57:51,050 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116700353] [2019-10-22 08:57:51,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-10-22 08:57:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:51,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:57:51,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:51,242 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 08:57:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:51,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116700353] [2019-10-22 08:57:51,333 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:51,333 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-22 08:57:51,333 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786086833] [2019-10-22 08:57:51,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:57:51,335 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 08:57:51,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:57:51,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:57:51,335 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 8 states. [2019-10-22 08:57:51,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:51,472 INFO L93 Difference]: Finished difference Result 42 states and 55 transitions. [2019-10-22 08:57:51,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:57:51,475 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-10-22 08:57:51,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:51,475 INFO L225 Difference]: With dead ends: 42 [2019-10-22 08:57:51,475 INFO L226 Difference]: Without dead ends: 16 [2019-10-22 08:57:51,476 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:57:51,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-22 08:57:51,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-22 08:57:51,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-22 08:57:51,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2019-10-22 08:57:51,480 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2019-10-22 08:57:51,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:51,480 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2019-10-22 08:57:51,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:57:51,481 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2019-10-22 08:57:51,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:57:51,481 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:51,481 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:51,682 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-10-22 08:57:51,682 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:51,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:51,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1582346339, now seen corresponding path program 1 times [2019-10-22 08:57:51,683 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:57:51,684 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643929197] [2019-10-22 08:57:51,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2571259d-80bc-4ac6-bb42-129eb93843b3/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-10-22 08:57:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:51,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-22 08:57:51,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:52,110 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-10-22 08:57:52,111 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:171) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 08:57:52,115 INFO L168 Benchmark]: Toolchain (without parser) took 3020.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 951.0 MB in the beginning and 1.0 GB in the end (delta: -92.5 MB). Peak memory consumption was 69.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:52,115 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:52,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -206.6 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:52,116 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:52,118 INFO L168 Benchmark]: Boogie Preprocessor took 40.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:52,119 INFO L168 Benchmark]: RCFGBuilder took 1102.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:52,119 INFO L168 Benchmark]: TraceAbstraction took 1511.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 75.0 MB). Peak memory consumption was 75.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:52,122 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 324.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -206.6 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1102.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1511.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 75.0 MB). Peak memory consumption was 75.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...