./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/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 05489f97023e2a5894acdd30001ad3ce1a478731 ...................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/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 05489f97023e2a5894acdd30001ad3ce1a478731 ............................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 10:26:39,601 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 10:26:39,602 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 10:26:39,608 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 10:26:39,608 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 10:26:39,609 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 10:26:39,610 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 10:26:39,610 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 10:26:39,611 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 10:26:39,612 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 10:26:39,612 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 10:26:39,612 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 10:26:39,613 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 10:26:39,613 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 10:26:39,614 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 10:26:39,614 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 10:26:39,614 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 10:26:39,616 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 10:26:39,617 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 10:26:39,618 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 10:26:39,618 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 10:26:39,619 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 10:26:39,621 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 10:26:39,621 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 10:26:39,621 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 10:26:39,622 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 10:26:39,623 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 10:26:39,623 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 10:26:39,623 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 10:26:39,624 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 10:26:39,624 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 10:26:39,625 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 10:26:39,625 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 10:26:39,625 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 10:26:39,625 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 10:26:39,626 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 10:26:39,626 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 10:26:39,633 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 10:26:39,633 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 10:26:39,634 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 10:26:39,634 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 10:26:39,634 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 10:26:39,634 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 10:26:39,634 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 10:26:39,635 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 10:26:39,635 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 10:26:39,635 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 10:26:39,635 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 10:26:39,635 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 10:26:39,635 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 10:26:39,635 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 10:26:39,635 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 10:26:39,636 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 10:26:39,636 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 10:26:39,636 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 10:26:39,636 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 10:26:39,636 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 10:26:39,636 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 10:26:39,636 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 10:26:39,636 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 10:26:39,637 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 10:26:39,637 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 10:26:39,637 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 10:26:39,637 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 10:26:39,637 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 10:26:39,637 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 10:26:39,637 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/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 -> 05489f97023e2a5894acdd30001ad3ce1a478731 [2018-11-10 10:26:39,661 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 10:26:39,670 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 10:26:39,673 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 10:26:39,674 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 10:26:39,674 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 10:26:39,675 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c [2018-11-10 10:26:39,722 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/data/b39e57827/244ad7abe0534e2381964871dd192808/FLAG78faf6d58 [2018-11-10 10:26:40,120 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 10:26:40,121 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c [2018-11-10 10:26:40,125 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/data/b39e57827/244ad7abe0534e2381964871dd192808/FLAG78faf6d58 [2018-11-10 10:26:40,135 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/data/b39e57827/244ad7abe0534e2381964871dd192808 [2018-11-10 10:26:40,138 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 10:26:40,138 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 10:26:40,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 10:26:40,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 10:26:40,142 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 10:26:40,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:26:40" (1/1) ... [2018-11-10 10:26:40,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@680a2912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:40, skipping insertion in model container [2018-11-10 10:26:40,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:26:40" (1/1) ... [2018-11-10 10:26:40,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 10:26:40,163 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 10:26:40,265 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 10:26:40,268 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 10:26:40,279 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 10:26:40,288 INFO L193 MainTranslator]: Completed translation [2018-11-10 10:26:40,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:40 WrapperNode [2018-11-10 10:26:40,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 10:26:40,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 10:26:40,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 10:26:40,289 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 10:26:40,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:40" (1/1) ... [2018-11-10 10:26:40,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:40" (1/1) ... [2018-11-10 10:26:40,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:40" (1/1) ... [2018-11-10 10:26:40,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:40" (1/1) ... [2018-11-10 10:26:40,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:40" (1/1) ... [2018-11-10 10:26:40,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:40" (1/1) ... [2018-11-10 10:26:40,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:40" (1/1) ... [2018-11-10 10:26:40,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 10:26:40,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 10:26:40,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 10:26:40,308 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 10:26:40,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/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 [2018-11-10 10:26:40,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 10:26:40,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 10:26:40,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 10:26:40,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 10:26:40,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 10:26:40,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-10 10:26:40,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-10 10:26:40,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 10:26:40,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 10:26:40,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 10:26:40,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 10:26:40,487 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 10:26:40,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 10:26:40 BoogieIcfgContainer [2018-11-10 10:26:40,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 10:26:40,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 10:26:40,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 10:26:40,491 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 10:26:40,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:26:40" (1/3) ... [2018-11-10 10:26:40,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39641209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:26:40, skipping insertion in model container [2018-11-10 10:26:40,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:40" (2/3) ... [2018-11-10 10:26:40,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39641209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:26:40, skipping insertion in model container [2018-11-10 10:26:40,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 10:26:40" (3/3) ... [2018-11-10 10:26:40,494 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant_true-unreach-call_true-termination.c [2018-11-10 10:26:40,499 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 10:26:40,503 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 10:26:40,512 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 10:26:40,534 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 10:26:40,534 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 10:26:40,534 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 10:26:40,535 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 10:26:40,535 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 10:26:40,535 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 10:26:40,535 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 10:26:40,535 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 10:26:40,535 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 10:26:40,549 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-10 10:26:40,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 10:26:40,554 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 10:26:40,555 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 10:26:40,557 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 10:26:40,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:26:40,561 INFO L82 PathProgramCache]: Analyzing trace with hash 874356560, now seen corresponding path program 1 times [2018-11-10 10:26:40,563 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 10:26:40,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 10:26:40,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:26:40,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:26:40,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:26:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 10:26:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 10:26:40,634 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 10:26:40,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:26:40 BoogieIcfgContainer [2018-11-10 10:26:40,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 10:26:40,649 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 10:26:40,649 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 10:26:40,649 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 10:26:40,649 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 10:26:40" (3/4) ... [2018-11-10 10:26:40,652 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 10:26:40,652 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 10:26:40,652 INFO L168 Benchmark]: Toolchain (without parser) took 514.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -150.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 10:26:40,653 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 10:26:40,654 INFO L168 Benchmark]: CACSL2BoogieTranslator took 149.27 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 10:26:40,654 INFO L168 Benchmark]: Boogie Preprocessor took 18.68 ms. Allocated memory is still 1.0 GB. Free memory was 946.4 MB in the beginning and 943.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 10:26:40,655 INFO L168 Benchmark]: RCFGBuilder took 180.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 943.7 MB in the beginning and 1.1 GB in the end (delta: -177.4 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2018-11-10 10:26:40,655 INFO L168 Benchmark]: TraceAbstraction took 160.34 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 10:26:40,655 INFO L168 Benchmark]: Witness Printer took 3.01 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. [2018-11-10 10:26:40,657 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 149.27 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.68 ms. Allocated memory is still 1.0 GB. Free memory was 946.4 MB in the beginning and 943.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 180.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 943.7 MB in the beginning and 1.1 GB in the end (delta: -177.4 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 160.34 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 3.01 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: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 24, overapproximation of to_real at line 12, overapproximation of someBinaryArithmeticFLOAToperation at line 24. Possible FailurePath: [L9] float X, Y, S, R, D; [L10] int i; [L12] Y = 0 [L14] i = 0 VAL [i=0] [L14] COND TRUE i < 100000 [L16] X = __VERIFIER_nondet_float() [L17] D = __VERIFIER_nondet_float() [L21] S = Y [L22] Y = X [L23] R = X - S VAL [D=4, i=0, S=2, X=3, Y=3] [L24] COND TRUE R <= -D [L24] Y = S - D VAL [D=4, i=0, S=2, X=3] [L27] CALL __VERIFIER_assert(Y >= -129.f && Y <= 129.f) VAL [\old(cond)=0] [L5] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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 0.1.23-1dbac8b [2018-11-10 10:26:42,135 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 10:26:42,136 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 10:26:42,144 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 10:26:42,144 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 10:26:42,145 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 10:26:42,146 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 10:26:42,147 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 10:26:42,148 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 10:26:42,149 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 10:26:42,149 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 10:26:42,149 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 10:26:42,150 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 10:26:42,151 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 10:26:42,151 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 10:26:42,152 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 10:26:42,152 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 10:26:42,153 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 10:26:42,155 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 10:26:42,156 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 10:26:42,156 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 10:26:42,157 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 10:26:42,159 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 10:26:42,159 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 10:26:42,159 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 10:26:42,160 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 10:26:42,160 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 10:26:42,161 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 10:26:42,161 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 10:26:42,162 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 10:26:42,162 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 10:26:42,163 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 10:26:42,163 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 10:26:42,163 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 10:26:42,164 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 10:26:42,164 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 10:26:42,164 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-10 10:26:42,174 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 10:26:42,174 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 10:26:42,175 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 10:26:42,175 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 10:26:42,176 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 10:26:42,176 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 10:26:42,176 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 10:26:42,176 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 10:26:42,176 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 10:26:42,176 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 10:26:42,176 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 10:26:42,177 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 10:26:42,177 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 10:26:42,177 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 10:26:42,177 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 10:26:42,177 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 10:26:42,177 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 10:26:42,177 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 10:26:42,177 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 10:26:42,178 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 10:26:42,178 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 10:26:42,178 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 10:26:42,178 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 10:26:42,178 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 10:26:42,178 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 10:26:42,178 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 10:26:42,178 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 10:26:42,179 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-10 10:26:42,179 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 10:26:42,179 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 10:26:42,179 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 10:26:42,179 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/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 -> 05489f97023e2a5894acdd30001ad3ce1a478731 [2018-11-10 10:26:42,208 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 10:26:42,218 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 10:26:42,220 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 10:26:42,221 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 10:26:42,222 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 10:26:42,222 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c [2018-11-10 10:26:42,259 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/data/16b5bee81/0dfd3b3518274c20b4ea36fcb43135b8/FLAG2d71a87dd [2018-11-10 10:26:42,647 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 10:26:42,648 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c [2018-11-10 10:26:42,651 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/data/16b5bee81/0dfd3b3518274c20b4ea36fcb43135b8/FLAG2d71a87dd [2018-11-10 10:26:42,660 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/data/16b5bee81/0dfd3b3518274c20b4ea36fcb43135b8 [2018-11-10 10:26:42,662 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 10:26:42,663 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 10:26:42,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 10:26:42,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 10:26:42,665 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 10:26:42,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:26:42" (1/1) ... [2018-11-10 10:26:42,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f1e2d2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:42, skipping insertion in model container [2018-11-10 10:26:42,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:26:42" (1/1) ... [2018-11-10 10:26:42,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 10:26:42,686 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 10:26:42,791 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 10:26:42,795 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 10:26:42,807 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 10:26:42,817 INFO L193 MainTranslator]: Completed translation [2018-11-10 10:26:42,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:42 WrapperNode [2018-11-10 10:26:42,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 10:26:42,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 10:26:42,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 10:26:42,818 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 10:26:42,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:42" (1/1) ... [2018-11-10 10:26:42,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:42" (1/1) ... [2018-11-10 10:26:42,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:42" (1/1) ... [2018-11-10 10:26:42,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:42" (1/1) ... [2018-11-10 10:26:42,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:42" (1/1) ... [2018-11-10 10:26:42,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:42" (1/1) ... [2018-11-10 10:26:42,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:42" (1/1) ... [2018-11-10 10:26:42,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 10:26:42,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 10:26:42,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 10:26:42,840 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 10:26:42,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/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 [2018-11-10 10:26:42,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 10:26:42,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 10:26:42,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 10:26:42,878 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 10:26:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 10:26:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-10 10:26:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-10 10:26:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 10:26:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 10:26:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 10:26:42,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 10:26:43,212 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 10:26:43,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 10:26:43 BoogieIcfgContainer [2018-11-10 10:26:43,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 10:26:43,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 10:26:43,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 10:26:43,216 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 10:26:43,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:26:42" (1/3) ... [2018-11-10 10:26:43,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f75808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:26:43, skipping insertion in model container [2018-11-10 10:26:43,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:42" (2/3) ... [2018-11-10 10:26:43,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f75808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:26:43, skipping insertion in model container [2018-11-10 10:26:43,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 10:26:43" (3/3) ... [2018-11-10 10:26:43,219 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant_true-unreach-call_true-termination.c [2018-11-10 10:26:43,228 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 10:26:43,232 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 10:26:43,241 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 10:26:43,258 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 10:26:43,258 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 10:26:43,258 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 10:26:43,259 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 10:26:43,259 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 10:26:43,259 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 10:26:43,259 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 10:26:43,259 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 10:26:43,259 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 10:26:43,273 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-10 10:26:43,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 10:26:43,278 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 10:26:43,278 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 10:26:43,280 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 10:26:43,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:26:43,284 INFO L82 PathProgramCache]: Analyzing trace with hash 874356560, now seen corresponding path program 1 times [2018-11-10 10:26:43,287 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 10:26:43,287 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/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 [2018-11-10 10:26:43,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:26:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:26:43,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 10:26:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:26:43,490 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 10:26:43,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 10:26:43,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-10 10:26:43,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 10:26:43,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 10:26:43,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-10 10:26:43,516 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 7 states. [2018-11-10 10:26:44,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 10:26:44,279 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2018-11-10 10:26:44,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 10:26:44,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-11-10 10:26:44,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 10:26:44,288 INFO L225 Difference]: With dead ends: 64 [2018-11-10 10:26:44,288 INFO L226 Difference]: Without dead ends: 33 [2018-11-10 10:26:44,291 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-10 10:26:44,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-10 10:26:44,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2018-11-10 10:26:44,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-10 10:26:44,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-11-10 10:26:44,317 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 12 [2018-11-10 10:26:44,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 10:26:44,317 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-11-10 10:26:44,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 10:26:44,317 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-11-10 10:26:44,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-10 10:26:44,318 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 10:26:44,318 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 10:26:44,318 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 10:26:44,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:26:44,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1368016777, now seen corresponding path program 1 times [2018-11-10 10:26:44,319 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 10:26:44,319 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/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 [2018-11-10 10:26:44,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:26:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:26:44,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 10:26:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:26:44,487 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 10:26:44,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 10:26:44,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-10 10:26:44,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 10:26:44,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 10:26:44,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-10 10:26:44,497 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 7 states. [2018-11-10 10:26:45,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 10:26:45,037 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2018-11-10 10:26:45,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 10:26:45,038 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-11-10 10:26:45,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 10:26:45,040 INFO L225 Difference]: With dead ends: 40 [2018-11-10 10:26:45,040 INFO L226 Difference]: Without dead ends: 38 [2018-11-10 10:26:45,041 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-10 10:26:45,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-10 10:26:45,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2018-11-10 10:26:45,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-10 10:26:45,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-11-10 10:26:45,045 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2018-11-10 10:26:45,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 10:26:45,046 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-11-10 10:26:45,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 10:26:45,046 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-11-10 10:26:45,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-10 10:26:45,046 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 10:26:45,047 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 10:26:45,047 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 10:26:45,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:26:45,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1369863819, now seen corresponding path program 1 times [2018-11-10 10:26:45,047 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 10:26:45,048 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/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 [2018-11-10 10:26:45,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:26:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:26:45,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 10:26:45,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:26:45,127 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 10:26:45,135 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 10:26:45,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 10:26:45,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 10:26:45,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 10:26:45,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 10:26:45,136 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2018-11-10 10:26:45,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 10:26:45,359 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-11-10 10:26:45,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 10:26:45,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-10 10:26:45,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 10:26:45,360 INFO L225 Difference]: With dead ends: 36 [2018-11-10 10:26:45,360 INFO L226 Difference]: Without dead ends: 34 [2018-11-10 10:26:45,361 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 10:26:45,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-10 10:26:45,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2018-11-10 10:26:45,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-10 10:26:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-11-10 10:26:45,365 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2018-11-10 10:26:45,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 10:26:45,365 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-11-10 10:26:45,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 10:26:45,365 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-11-10 10:26:45,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 10:26:45,366 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 10:26:45,366 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 10:26:45,366 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 10:26:45,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:26:45,366 INFO L82 PathProgramCache]: Analyzing trace with hash -758059740, now seen corresponding path program 1 times [2018-11-10 10:26:45,367 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 10:26:45,367 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-10 10:26:45,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:26:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:26:45,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 10:26:46,966 WARN L179 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 25 [2018-11-10 10:26:49,246 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~X~0 (_ FloatingPoint 8 24)) (main_~S~0 (_ FloatingPoint 8 24)) (main_~D~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 128.0)) (.cse1 ((_ to_fp 8 24) RNE 129.0))) (and (fp.geq main_~X~0 (fp.neg .cse0)) (fp.leq main_~S~0 .cse1) (fp.leq main_~X~0 .cse0) (fp.leq (fp.sub RNE main_~X~0 main_~S~0) (fp.neg main_~D~0)) (= c_main_~Y~0 (fp.sub RNE main_~S~0 main_~D~0)) (fp.geq main_~D~0 (_ +zero 8 24)) (fp.leq main_~D~0 ((_ to_fp 8 24) RNE 16.0)) (fp.geq main_~S~0 (fp.neg .cse1))))) is different from true [2018-11-10 10:26:55,083 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:26:55,083 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 10:26:58,294 WARN L179 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-10 10:27:14,314 WARN L179 SmtUtils]: Spent 3.45 s on a formula simplification that was a NOOP. DAG size: 48 [2018-11-10 10:27:23,553 WARN L832 $PredicateComparison]: unable to prove that (forall ((v_prenex_1 (_ FloatingPoint 8 24)) (v_prenex_2 (_ FloatingPoint 8 24)) (main_~Y~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse2 ((_ to_fp 8 24) RNE 128.0)) (.cse0 (fp.neg .cse1))) (or (not (fp.leq (fp.sub RNE v_prenex_2 main_~Y~0) (fp.neg v_prenex_1))) (fp.geq (fp.sub RNE main_~Y~0 v_prenex_1) .cse0) (not (fp.leq main_~Y~0 .cse1)) (not (fp.leq v_prenex_1 ((_ to_fp 8 24) RNE 16.0))) (not (fp.geq v_prenex_2 (fp.neg .cse2))) (not (fp.leq v_prenex_2 .cse2)) (not (fp.geq v_prenex_1 (_ +zero 8 24))) (not (fp.geq main_~Y~0 .cse0)))))) is different from false [2018-11-10 10:27:25,560 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_prenex_1 (_ FloatingPoint 8 24)) (v_prenex_2 (_ FloatingPoint 8 24)) (main_~Y~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse2 ((_ to_fp 8 24) RNE 128.0)) (.cse0 (fp.neg .cse1))) (or (not (fp.leq (fp.sub RNE v_prenex_2 main_~Y~0) (fp.neg v_prenex_1))) (fp.geq (fp.sub RNE main_~Y~0 v_prenex_1) .cse0) (not (fp.leq main_~Y~0 .cse1)) (not (fp.leq v_prenex_1 ((_ to_fp 8 24) RNE 16.0))) (not (fp.geq v_prenex_2 (fp.neg .cse2))) (not (fp.leq v_prenex_2 .cse2)) (not (fp.geq v_prenex_1 (_ +zero 8 24))) (not (fp.geq main_~Y~0 .cse0)))))) is different from true [2018-11-10 10:27:25,569 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 10:27:25,569 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d42947eb-4cbf-4fdb-ac36-23271d1d2ce2/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 10:27:25,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:27:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:27:26,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 10:27:43,215 WARN L179 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-10 10:27:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:27:43,594 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 10:27:50,328 WARN L179 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 17 [2018-11-10 10:28:03,161 WARN L179 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 35 [2018-11-10 10:28:05,209 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse0 (not (fp.leq c_main_~Y~0 .cse2))) (.cse1 (not (fp.geq c_main_~Y~0 (fp.neg .cse2))))) (and (or (forall ((v_prenex_5 (_ FloatingPoint 8 24)) (v_prenex_6 (_ FloatingPoint 8 24))) (or (fp.leq (fp.sub RNE c_main_~Y~0 v_prenex_5) ((_ to_fp 8 24) RNE 129.0)) (not (fp.leq v_prenex_6 (fp.neg v_prenex_5))) (not (fp.leq v_prenex_5 ((_ to_fp 8 24) RNE 16.0))) (not (fp.geq v_prenex_5 (_ +zero 8 24))))) .cse0 .cse1) (or .cse0 (forall ((v_main_~D~0_8 (_ FloatingPoint 8 24)) (main_~R~0 (_ FloatingPoint 8 24))) (or (not (fp.leq main_~R~0 (fp.neg v_main_~D~0_8))) (fp.geq (fp.sub RNE c_main_~Y~0 v_main_~D~0_8) (fp.neg ((_ to_fp 8 24) RNE 129.0))) (not (fp.leq v_main_~D~0_8 ((_ to_fp 8 24) RNE 16.0))) (not (fp.geq v_main_~D~0_8 (_ +zero 8 24))))) .cse1)))) is different from true [2018-11-10 10:28:05,230 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 10:28:05,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 14 [2018-11-10 10:28:05,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-10 10:28:05,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-10 10:28:05,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=245, Unknown=14, NotChecked=102, Total=420 [2018-11-10 10:28:05,231 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 14 states. [2018-11-10 10:28:09,653 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2018-11-10 10:28:21,434 WARN L179 SmtUtils]: Spent 10.31 s on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2018-11-10 10:28:27,658 WARN L179 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2018-11-10 10:28:34,098 WARN L179 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2018-11-10 10:29:30,761 WARN L179 SmtUtils]: Spent 31.60 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2018-11-10 10:29:48,165 WARN L179 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-11-10 10:30:12,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 10:30:12,155 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:928) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:767) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:339) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:382) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:673) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:602) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 43 more [2018-11-10 10:30:12,157 INFO L168 Benchmark]: Toolchain (without parser) took 209495.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 950.8 MB in the beginning and 880.2 MB in the end (delta: 70.6 MB). Peak memory consumption was 207.0 MB. Max. memory is 11.5 GB. [2018-11-10 10:30:12,158 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 10:30:12,158 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.03 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 940.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 10:30:12,159 INFO L168 Benchmark]: Boogie Preprocessor took 22.10 ms. Allocated memory is still 1.0 GB. Free memory was 940.1 MB in the beginning and 934.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 10:30:12,159 INFO L168 Benchmark]: RCFGBuilder took 373.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 934.7 MB in the beginning and 1.1 GB in the end (delta: -187.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2018-11-10 10:30:12,160 INFO L168 Benchmark]: TraceAbstraction took 208943.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 880.2 MB in the end (delta: 241.5 MB). Peak memory consumption was 241.5 MB. Max. memory is 11.5 GB. [2018-11-10 10:30:12,162 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 154.03 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 940.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.10 ms. Allocated memory is still 1.0 GB. Free memory was 940.1 MB in the beginning and 934.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 373.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 934.7 MB in the beginning and 1.1 GB in the end (delta: -187.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 208943.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 880.2 MB in the end (delta: 241.5 MB). Peak memory consumption was 241.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...