./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.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_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/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 5d57b69a18e01217b153b00cc1c03d5a7a42828b ..................................................................................................................................................................................................................................................................................... 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_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/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 5d57b69a18e01217b153b00cc1c03d5a7a42828b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:14:50,038 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:14:50,039 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:14:50,048 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:14:50,048 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:14:50,049 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:14:50,050 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:14:50,051 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:14:50,053 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:14:50,053 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:14:50,054 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:14:50,054 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:14:50,055 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:14:50,056 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:14:50,056 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:14:50,057 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:14:50,058 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:14:50,059 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:14:50,068 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:14:50,070 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:14:50,070 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:14:50,071 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:14:50,073 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:14:50,078 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:14:50,078 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:14:50,079 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:14:50,079 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:14:50,080 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:14:50,080 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:14:50,081 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:14:50,081 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:14:50,082 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:14:50,082 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:14:50,082 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:14:50,083 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:14:50,083 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:14:50,087 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 22:14:50,105 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:14:50,106 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:14:50,106 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:14:50,106 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:14:50,107 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:14:50,107 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:14:50,107 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:14:50,107 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:14:50,108 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:14:50,108 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:14:50,108 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:14:50,108 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:14:50,108 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:14:50,108 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:14:50,108 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:14:50,109 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:14:50,109 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:14:50,109 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:14:50,109 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:14:50,109 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:14:50,109 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:14:50,109 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:14:50,110 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:14:50,110 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:14:50,110 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:14:50,110 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:14:50,110 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:14:50,110 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:14:50,111 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:14:50,111 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_b0b1eace-df61-426b-9aeb-f9d558b21cdb/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 -> 5d57b69a18e01217b153b00cc1c03d5a7a42828b [2018-10-26 22:14:50,140 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:14:50,154 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:14:50,159 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:14:50,160 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:14:50,160 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:14:50,161 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c [2018-10-26 22:14:50,206 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/data/7fe96f7ec/c5bf283e1e9f4d2aabe3c20816260b48/FLAG2dceb4aa2 [2018-10-26 22:14:50,576 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:14:50,576 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/sv-benchmarks/c/float-benchs/loop_true-unreach-call.c [2018-10-26 22:14:50,582 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/data/7fe96f7ec/c5bf283e1e9f4d2aabe3c20816260b48/FLAG2dceb4aa2 [2018-10-26 22:14:50,595 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/data/7fe96f7ec/c5bf283e1e9f4d2aabe3c20816260b48 [2018-10-26 22:14:50,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:14:50,600 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:14:50,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:14:50,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:14:50,604 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:14:50,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:14:50" (1/1) ... [2018-10-26 22:14:50,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb7a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:50, skipping insertion in model container [2018-10-26 22:14:50,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:14:50" (1/1) ... [2018-10-26 22:14:50,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:14:50,628 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:14:50,743 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:14:50,746 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:14:50,757 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:14:50,768 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:14:50,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:50 WrapperNode [2018-10-26 22:14:50,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:14:50,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:14:50,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:14:50,770 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:14:50,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:50" (1/1) ... [2018-10-26 22:14:50,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:50" (1/1) ... [2018-10-26 22:14:50,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:50" (1/1) ... [2018-10-26 22:14:50,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:50" (1/1) ... [2018-10-26 22:14:50,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:50" (1/1) ... [2018-10-26 22:14:50,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:50" (1/1) ... [2018-10-26 22:14:50,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:50" (1/1) ... [2018-10-26 22:14:50,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:14:50,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:14:50,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:14:50,796 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:14:50,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/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 [2018-10-26 22:14:50,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:14:50,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:14:50,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 22:14:50,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:14:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 22:14:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 22:14:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:14:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:14:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:14:51,162 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:14:51,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:14:51 BoogieIcfgContainer [2018-10-26 22:14:51,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:14:51,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:14:51,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:14:51,168 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:14:51,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:14:50" (1/3) ... [2018-10-26 22:14:51,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8dcb65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:14:51, skipping insertion in model container [2018-10-26 22:14:51,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:50" (2/3) ... [2018-10-26 22:14:51,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8dcb65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:14:51, skipping insertion in model container [2018-10-26 22:14:51,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:14:51" (3/3) ... [2018-10-26 22:14:51,172 INFO L112 eAbstractionObserver]: Analyzing ICFG loop_true-unreach-call.c [2018-10-26 22:14:51,182 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:14:51,189 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:14:51,205 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:14:51,233 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:14:51,233 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:14:51,234 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:14:51,234 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:14:51,234 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:14:51,234 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:14:51,234 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:14:51,234 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:14:51,234 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:14:51,251 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-10-26 22:14:51,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-26 22:14:51,257 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:14:51,257 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:14:51,259 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:14:51,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:14:51,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2018-10-26 22:14:51,267 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:14:51,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:14:51,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:14:51,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:14:51,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:14:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:14:51,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:14:51,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:14:51,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:14:51,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:14:51,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:14:51,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:14:51,386 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-10-26 22:14:51,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:14:51,405 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-10-26 22:14:51,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:14:51,406 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-26 22:14:51,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:14:51,415 INFO L225 Difference]: With dead ends: 31 [2018-10-26 22:14:51,415 INFO L226 Difference]: Without dead ends: 12 [2018-10-26 22:14:51,418 INFO L605 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 [2018-10-26 22:14:51,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-26 22:14:51,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-26 22:14:51,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-26 22:14:51,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-26 22:14:51,453 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-26 22:14:51,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:14:51,454 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-26 22:14:51,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:14:51,454 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-26 22:14:51,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-26 22:14:51,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:14:51,454 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:14:51,455 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:14:51,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:14:51,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1861991801, now seen corresponding path program 1 times [2018-10-26 22:14:51,455 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:14:51,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:14:51,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:14:51,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:14:51,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:14:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:14:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:14:51,490 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 22:14:51,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:14:51 BoogieIcfgContainer [2018-10-26 22:14:51,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:14:51,512 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 22:14:51,512 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 22:14:51,512 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 22:14:51,513 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:14:51" (3/4) ... [2018-10-26 22:14:51,517 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 22:14:51,517 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 22:14:51,518 INFO L168 Benchmark]: Toolchain (without parser) took 918.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 958.5 MB in the beginning and 1.1 GB in the end (delta: -153.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:14:51,520 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:14:51,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.36 ms. Allocated memory is still 1.0 GB. Free memory was 958.5 MB in the beginning and 947.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:14:51,521 INFO L168 Benchmark]: Boogie Preprocessor took 26.20 ms. Allocated memory is still 1.0 GB. Free memory is still 947.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:14:51,522 INFO L168 Benchmark]: RCFGBuilder took 366.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 947.7 MB in the beginning and 1.1 GB in the end (delta: -192.3 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2018-10-26 22:14:51,523 INFO L168 Benchmark]: TraceAbstraction took 347.48 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: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. [2018-10-26 22:14:51,523 INFO L168 Benchmark]: Witness Printer took 5.45 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. [2018-10-26 22:14:51,527 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 168.36 ms. Allocated memory is still 1.0 GB. Free memory was 958.5 MB in the beginning and 947.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.20 ms. Allocated memory is still 1.0 GB. Free memory is still 947.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 366.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 947.7 MB in the beginning and 1.1 GB in the end (delta: -192.3 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 347.48 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: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. * Witness Printer took 5.45 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: 2]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12. Possible FailurePath: [L6] float x, y, z; [L8] x = 1.f [L9] y = 1e7 [L10] z = 42.f VAL [x=1, y=10000000, z=42] [L12] COND FALSE !(x < y) VAL [x=1, y=10000000, z=42] [L18] CALL __VERIFIER_assert(z >= 0.f && z <= 1e8) VAL [\old(cond)=0] [L2] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L2] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 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=19occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2018-10-26 22:14:53,401 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:14:53,402 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:14:53,414 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:14:53,414 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:14:53,415 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:14:53,415 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:14:53,417 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:14:53,418 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:14:53,418 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:14:53,419 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:14:53,419 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:14:53,420 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:14:53,421 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:14:53,422 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:14:53,422 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:14:53,423 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:14:53,425 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:14:53,427 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:14:53,428 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:14:53,429 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:14:53,429 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:14:53,431 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:14:53,431 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:14:53,442 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:14:53,443 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:14:53,444 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:14:53,444 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:14:53,445 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:14:53,446 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:14:53,446 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:14:53,446 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:14:53,447 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:14:53,447 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:14:53,447 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:14:53,449 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:14:53,449 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-10-26 22:14:53,461 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:14:53,461 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:14:53,462 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:14:53,462 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:14:53,463 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:14:53,463 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:14:53,463 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:14:53,463 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:14:53,463 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:14:53,464 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:14:53,464 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:14:53,464 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:14:53,464 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:14:53,464 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:14:53,464 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 22:14:53,465 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 22:14:53,465 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:14:53,465 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:14:53,465 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:14:53,465 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:14:53,465 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:14:53,465 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:14:53,466 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:14:53,466 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:14:53,466 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:14:53,466 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:14:53,466 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:14:53,466 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-10-26 22:14:53,467 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:14:53,467 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 22:14:53,467 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 22:14:53,467 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_b0b1eace-df61-426b-9aeb-f9d558b21cdb/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 -> 5d57b69a18e01217b153b00cc1c03d5a7a42828b [2018-10-26 22:14:53,503 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:14:53,513 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:14:53,518 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:14:53,520 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:14:53,521 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:14:53,521 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/loop_true-unreach-call.c [2018-10-26 22:14:53,575 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/data/a422d3847/6388e2b45dc2494eb6c657ca02c8e0e7/FLAG5b461636c [2018-10-26 22:14:53,972 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:14:53,973 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/sv-benchmarks/c/float-benchs/loop_true-unreach-call.c [2018-10-26 22:14:53,978 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/data/a422d3847/6388e2b45dc2494eb6c657ca02c8e0e7/FLAG5b461636c [2018-10-26 22:14:53,991 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/data/a422d3847/6388e2b45dc2494eb6c657ca02c8e0e7 [2018-10-26 22:14:53,996 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:14:53,997 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:14:53,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:14:53,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:14:54,002 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:14:54,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:14:53" (1/1) ... [2018-10-26 22:14:54,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f92ff23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:54, skipping insertion in model container [2018-10-26 22:14:54,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:14:53" (1/1) ... [2018-10-26 22:14:54,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:14:54,033 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:14:54,176 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:14:54,182 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:14:54,196 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:14:54,209 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:14:54,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:54 WrapperNode [2018-10-26 22:14:54,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:14:54,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:14:54,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:14:54,211 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:14:54,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:54" (1/1) ... [2018-10-26 22:14:54,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:54" (1/1) ... [2018-10-26 22:14:54,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:54" (1/1) ... [2018-10-26 22:14:54,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:54" (1/1) ... [2018-10-26 22:14:54,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:54" (1/1) ... [2018-10-26 22:14:54,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:54" (1/1) ... [2018-10-26 22:14:54,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:54" (1/1) ... [2018-10-26 22:14:54,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:14:54,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:14:54,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:14:54,243 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:14:54,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/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 [2018-10-26 22:14:54,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:14:54,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:14:54,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 22:14:54,294 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:14:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 22:14:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 22:14:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:14:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:14:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:14:54,939 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:14:54,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:14:54 BoogieIcfgContainer [2018-10-26 22:14:54,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:14:54,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:14:54,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:14:54,943 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:14:54,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:14:53" (1/3) ... [2018-10-26 22:14:54,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9ebe4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:14:54, skipping insertion in model container [2018-10-26 22:14:54,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:54" (2/3) ... [2018-10-26 22:14:54,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9ebe4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:14:54, skipping insertion in model container [2018-10-26 22:14:54,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:14:54" (3/3) ... [2018-10-26 22:14:54,952 INFO L112 eAbstractionObserver]: Analyzing ICFG loop_true-unreach-call.c [2018-10-26 22:14:54,962 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:14:54,978 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:14:55,001 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:14:55,028 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:14:55,029 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:14:55,029 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:14:55,029 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:14:55,029 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:14:55,029 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:14:55,029 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:14:55,029 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:14:55,029 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:14:55,046 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-10-26 22:14:55,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-26 22:14:55,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:14:55,052 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:14:55,054 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:14:55,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:14:55,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2018-10-26 22:14:55,064 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:14:55,064 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 22:14:55,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-10-26 22:14:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:14:55,124 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:14:55,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:14:55,138 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 22:14:55,148 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:14:55,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:14:55,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:14:55,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:14:55,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:14:55,162 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-10-26 22:14:55,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:14:55,182 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-10-26 22:14:55,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:14:55,184 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-26 22:14:55,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:14:55,193 INFO L225 Difference]: With dead ends: 31 [2018-10-26 22:14:55,193 INFO L226 Difference]: Without dead ends: 12 [2018-10-26 22:14:55,197 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:14:55,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-26 22:14:55,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-26 22:14:55,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-26 22:14:55,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-26 22:14:55,230 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-26 22:14:55,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:14:55,230 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-26 22:14:55,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:14:55,230 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-26 22:14:55,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-26 22:14:55,231 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:14:55,231 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:14:55,231 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:14:55,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:14:55,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1861991801, now seen corresponding path program 1 times [2018-10-26 22:14:55,233 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:14:55,233 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 22:14:55,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-10-26 22:14:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:14:55,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:14:55,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:14:55,356 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 22:14:55,372 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:14:55,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:14:55,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:14:55,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:14:55,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:14:55,374 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-10-26 22:14:55,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:14:55,606 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-26 22:14:55,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:14:55,607 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-10-26 22:14:55,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:14:55,608 INFO L225 Difference]: With dead ends: 19 [2018-10-26 22:14:55,608 INFO L226 Difference]: Without dead ends: 14 [2018-10-26 22:14:55,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:14:55,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-26 22:14:55,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-26 22:14:55,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-26 22:14:55,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-26 22:14:55,612 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-10-26 22:14:55,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:14:55,612 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-26 22:14:55,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:14:55,612 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-26 22:14:55,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-26 22:14:55,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:14:55,614 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:14:55,614 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:14:55,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:14:55,614 INFO L82 PathProgramCache]: Analyzing trace with hash -661808769, now seen corresponding path program 1 times [2018-10-26 22:14:55,615 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:14:55,615 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 22:14:55,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-10-26 22:14:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:14:55,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:14:55,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:14:55,757 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 22:14:59,246 WARN L179 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-26 22:14:59,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:14:59,271 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:14:59,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-10-26 22:14:59,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:14:59,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:14:59,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2018-10-26 22:14:59,272 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2018-10-26 22:15:07,679 WARN L179 SmtUtils]: Spent 3.11 s on a formula simplification that was a NOOP. DAG size: 10 [2018-10-26 22:15:11,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:15:11,843 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2018-10-26 22:15:11,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 22:15:11,845 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-10-26 22:15:11,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:15:11,845 INFO L225 Difference]: With dead ends: 25 [2018-10-26 22:15:11,845 INFO L226 Difference]: Without dead ends: 20 [2018-10-26 22:15:11,846 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=19, Invalid=21, Unknown=2, NotChecked=0, Total=42 [2018-10-26 22:15:11,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-26 22:15:11,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-26 22:15:11,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-26 22:15:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-26 22:15:11,852 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2018-10-26 22:15:11,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:15:11,853 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-26 22:15:11,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:15:11,853 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-26 22:15:11,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-26 22:15:11,854 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:15:11,854 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:15:11,854 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:15:11,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:15:11,854 INFO L82 PathProgramCache]: Analyzing trace with hash -875350895, now seen corresponding path program 2 times [2018-10-26 22:15:11,855 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 22:15:11,855 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/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 [2018-10-26 22:15:11,861 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-10-26 22:15:12,110 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 22:15:12,111 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 22:15:12,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:15:12,746 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:15:12,746 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 22:15:14,093 WARN L179 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-26 22:15:22,191 WARN L179 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 12 [2018-10-26 22:15:40,914 WARN L179 SmtUtils]: Spent 3.80 s on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 22:16:24,046 WARN L179 SmtUtils]: Spent 9.07 s on a formula simplification that was a NOOP. DAG size: 14 [2018-10-26 22:16:26,074 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) RNE 1.0))) (fp.add RNE (fp.add RNE (fp.add RNE (fp.add RNE c_main_~z~0 .cse1) .cse1) .cse1) .cse1)))) (and (fp.leq ((_ to_fp 11 53) RNE .cse0) ((_ to_fp 11 53) RNE 100000000.0)) (fp.geq .cse0 (_ +zero 8 24)))) is different from false [2018-10-26 22:16:26,856 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 6 times theorem prover too weak. 0 trivial. 8 not checked. [2018-10-26 22:16:26,878 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:16:26,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-10-26 22:16:26,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-26 22:16:26,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-26 22:16:26,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=151, Unknown=9, NotChecked=26, Total=240 [2018-10-26 22:16:26,879 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 16 states. [2018-10-26 22:16:30,037 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) RNE 1.0))) (fp.add RNE (fp.add RNE (fp.add RNE (fp.add RNE c_main_~z~0 .cse1) .cse1) .cse1) .cse1)))) (and (fp.leq ((_ to_fp 11 53) RNE .cse0) ((_ to_fp 11 53) RNE 100000000.0)) (= ((_ to_fp 8 24) RNE 42.0) c_main_~z~0) (fp.geq .cse0 (_ +zero 8 24)))) is different from true [2018-10-26 22:16:59,369 WARN L179 SmtUtils]: Spent 14.43 s on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2018-10-26 22:17:09,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:17:09,361 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2018-10-26 22:17:09,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 22:17:09,373 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 19 [2018-10-26 22:17:09,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:17:09,374 INFO L225 Difference]: With dead ends: 23 [2018-10-26 22:17:09,374 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 22:17:09,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 102.9s TimeCoverageRelationStatistics Valid=73, Invalid=195, Unknown=12, NotChecked=62, Total=342 [2018-10-26 22:17:09,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 22:17:09,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 22:17:09,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 22:17:09,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 22:17:09,376 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-10-26 22:17:09,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:17:09,376 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 22:17:09,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-26 22:17:09,377 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 22:17:09,377 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 22:17:09,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 22:17:24,376 WARN L179 SmtUtils]: Spent 14.92 s on a formula simplification. DAG size of input: 22 DAG size of output: 14 [2018-10-26 22:17:48,588 WARN L179 SmtUtils]: Spent 24.21 s on a formula simplification. DAG size of input: 51 DAG size of output: 14 [2018-10-26 22:17:48,590 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-26 22:17:48,591 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 22:17:48,591 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 22:17:48,591 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-26 22:17:48,591 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 22:17:48,591 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 22:17:48,591 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 4 20) the Hoare annotation is: true [2018-10-26 22:17:48,591 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 4 20) no Hoare annotation was computed. [2018-10-26 22:17:48,591 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-10-26 22:17:48,592 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 4 20) no Hoare annotation was computed. [2018-10-26 22:17:48,592 INFO L425 ceAbstractionStarter]: For program point L12-1(lines 12 16) no Hoare annotation was computed. [2018-10-26 22:17:48,592 INFO L421 ceAbstractionStarter]: At program point L12-3(lines 12 16) the Hoare annotation is: (let ((.cse0 ((_ to_fp 11 53) RNE 100000000.0))) (and (fp.leq ((_ to_fp 11 53) RNE (fp.add RNE main_~z~0 ((_ to_fp 8 24) RNE 1.0))) .cse0) (fp.leq ((_ to_fp 11 53) RNE main_~z~0) .cse0) (fp.geq main_~z~0 (_ +zero 8 24)))) [2018-10-26 22:17:48,592 INFO L421 ceAbstractionStarter]: At program point L12-4(lines 12 16) the Hoare annotation is: (let ((.cse0 ((_ to_fp 11 53) RNE 100000000.0))) (and (fp.leq ((_ to_fp 11 53) RNE (fp.add RNE main_~z~0 ((_ to_fp 8 24) RNE 1.0))) .cse0) (fp.leq ((_ to_fp 11 53) RNE main_~z~0) .cse0) (fp.geq main_~z~0 (_ +zero 8 24)))) [2018-10-26 22:17:48,592 INFO L425 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2018-10-26 22:17:48,593 INFO L425 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2018-10-26 22:17:48,593 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2018-10-26 22:17:48,593 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2018-10-26 22:17:48,593 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2018-10-26 22:17:48,593 INFO L425 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2018-10-26 22:17:48,601 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,602 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,603 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,603 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,603 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,604 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,607 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,608 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,608 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,608 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,608 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,609 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:17:48 BoogieIcfgContainer [2018-10-26 22:17:48,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:17:48,613 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 22:17:48,613 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 22:17:48,613 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 22:17:48,614 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:14:54" (3/4) ... [2018-10-26 22:17:48,617 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 22:17:48,623 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 22:17:48,624 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 22:17:48,624 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-26 22:17:48,628 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-10-26 22:17:48,629 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-10-26 22:17:48,629 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-26 22:17:48,665 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b0b1eace-df61-426b-9aeb-f9d558b21cdb/bin-2019/uautomizer/witness.graphml [2018-10-26 22:17:48,665 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 22:17:48,666 INFO L168 Benchmark]: Toolchain (without parser) took 174669.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 953.2 MB in the beginning and 1.0 GB in the end (delta: -73.6 MB). Peak memory consumption was 96.3 MB. Max. memory is 11.5 GB. [2018-10-26 22:17:48,667 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-10-26 22:17:48,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.38 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:17:48,669 INFO L168 Benchmark]: Boogie Preprocessor took 31.67 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 22:17:48,670 INFO L168 Benchmark]: RCFGBuilder took 697.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -210.5 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2018-10-26 22:17:48,670 INFO L168 Benchmark]: TraceAbstraction took 173672.10 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: 120.8 MB). Peak memory consumption was 120.8 MB. Max. memory is 11.5 GB. [2018-10-26 22:17:48,671 INFO L168 Benchmark]: Witness Printer took 52.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:17:48,676 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 212.38 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.67 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 697.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.9 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -210.5 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 173672.10 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: 120.8 MB). Peak memory consumption was 120.8 MB. Max. memory is 11.5 GB. * Witness Printer took 52.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant [2018-10-26 22:17:48,682 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,682 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,682 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,682 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,682 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,683 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,683 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,683 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,691 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,691 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,691 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE [2018-10-26 22:17:48,691 WARN L387 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression RoundingMode_RNE Derived loop invariant: (~fp.leq~DOUBLE(~to_fp~LONGDOUBLE(RoundingMode_RNE, ~fp.add~FLOAT(RoundingMode_RNE, z, ~to_fp~LONGDOUBLE(RoundingMode_RNE, 1.0))), ~to_fp~LONGDOUBLE(RoundingMode_RNE, 1.0E8)) && ~fp.leq~DOUBLE(~to_fp~LONGDOUBLE(RoundingMode_RNE, z), ~to_fp~LONGDOUBLE(RoundingMode_RNE, 1.0E8))) && ~fp.geq~FLOAT(z, ~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 173.5s OverallTime, 4 OverallIterations, 5 TraceHistogramMax, 55.3s AutomataDifference, 0.0s DeadEndRemovalTime, 39.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 54 SDtfs, 4 SDslu, 117 SDs, 0 SdLazy, 56 SolverSat, 10 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 20.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 113.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 18 NumberOfFragments, 51 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 209 FormulaSimplificationTreeSizeReductionInter, 39.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 78.4s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 11293 SizeOfPredicates, 6 NumberOfNonLiveVariables, 108 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 6/44 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...