./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 01b6390e563edc58f3f7d1f239b082df891f9006 .............................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 01b6390e563edc58f3f7d1f239b082df891f9006 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 13:37:38,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:37:38,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:37:38,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:37:38,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:37:38,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:37:38,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:37:38,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:37:38,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:37:38,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:37:38,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:37:38,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:37:38,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:37:38,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:37:38,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:37:38,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:37:38,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:37:38,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:37:38,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:37:38,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:37:38,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:37:38,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:37:38,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:37:38,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:37:38,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:37:38,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:37:38,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:37:38,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:37:38,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:37:38,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:37:38,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:37:38,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:37:38,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:37:38,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:37:38,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:37:38,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:37:38,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:37:38,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:37:38,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:37:38,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:37:38,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:37:38,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 13:37:38,595 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:37:38,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:37:38,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:37:38,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:37:38,597 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 13:37:38,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:37:38,597 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:37:38,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:37:38,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:37:38,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:37:38,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 13:37:38,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:37:38,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 13:37:38,599 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:37:38,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:37:38,599 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:37:38,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 13:37:38,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:37:38,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 13:37:38,600 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:37:38,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:37:38,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:37:38,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:37:38,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:37:38,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 13:37:38,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 13:37:38,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 13:37:38,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 13:37:38,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:37:38,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01b6390e563edc58f3f7d1f239b082df891f9006 [2019-12-07 13:37:38,710 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:37:38,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:37:38,722 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:37:38,723 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:37:38,724 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:37:38,724 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2019-12-07 13:37:38,764 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/data/ca636410c/3ce4edb07b7e4de38d9bd140778cdaf6/FLAGc2720cbb5 [2019-12-07 13:37:39,084 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:37:39,084 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2019-12-07 13:37:39,088 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/data/ca636410c/3ce4edb07b7e4de38d9bd140778cdaf6/FLAGc2720cbb5 [2019-12-07 13:37:39,096 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/data/ca636410c/3ce4edb07b7e4de38d9bd140778cdaf6 [2019-12-07 13:37:39,098 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:37:39,099 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:37:39,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:37:39,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:37:39,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:37:39,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:37:39" (1/1) ... [2019-12-07 13:37:39,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17574348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:39, skipping insertion in model container [2019-12-07 13:37:39,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:37:39" (1/1) ... [2019-12-07 13:37:39,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:37:39,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:37:39,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:37:39,265 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:37:39,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:37:39,301 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:37:39,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:39 WrapperNode [2019-12-07 13:37:39,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:37:39,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:37:39,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:37:39,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:37:39,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:39" (1/1) ... [2019-12-07 13:37:39,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:39" (1/1) ... [2019-12-07 13:37:39,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:37:39,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:37:39,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:37:39,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:37:39,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:39" (1/1) ... [2019-12-07 13:37:39,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:39" (1/1) ... [2019-12-07 13:37:39,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:39" (1/1) ... [2019-12-07 13:37:39,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:39" (1/1) ... [2019-12-07 13:37:39,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:39" (1/1) ... [2019-12-07 13:37:39,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:39" (1/1) ... [2019-12-07 13:37:39,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:39" (1/1) ... [2019-12-07 13:37:39,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:37:39,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:37:39,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:37:39,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:37:39,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:37:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 13:37:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 13:37:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:37:39,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:37:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 13:37:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 13:37:39,581 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:37:39,581 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-12-07 13:37:39,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:37:39 BoogieIcfgContainer [2019-12-07 13:37:39,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:37:39,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:37:39,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:37:39,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:37:39,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:37:39" (1/3) ... [2019-12-07 13:37:39,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d23ae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:37:39, skipping insertion in model container [2019-12-07 13:37:39,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:39" (2/3) ... [2019-12-07 13:37:39,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d23ae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:37:39, skipping insertion in model container [2019-12-07 13:37:39,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:37:39" (3/3) ... [2019-12-07 13:37:39,586 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2019-12-07 13:37:39,592 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:37:39,596 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 13:37:39,603 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 13:37:39,619 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:37:39,619 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 13:37:39,620 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:37:39,620 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:37:39,620 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:37:39,620 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:37:39,620 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:37:39,620 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:37:39,629 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-12-07 13:37:39,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:37:39,633 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:37:39,633 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:37:39,634 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:37:39,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:37:39,637 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-12-07 13:37:39,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:37:39,643 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768110135] [2019-12-07 13:37:39,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:37:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:37:39,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:37:39,716 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768110135] [2019-12-07 13:37:39,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:37:39,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:37:39,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558288087] [2019-12-07 13:37:39,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 13:37:39,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:37:39,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 13:37:39,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 13:37:39,729 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-12-07 13:37:39,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:37:39,742 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-12-07 13:37:39,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 13:37:39,743 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 13:37:39,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:37:39,749 INFO L225 Difference]: With dead ends: 54 [2019-12-07 13:37:39,749 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 13:37:39,751 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 13:37:39,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 13:37:39,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-07 13:37:39,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 13:37:39,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-12-07 13:37:39,774 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-12-07 13:37:39,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:37:39,774 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-12-07 13:37:39,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 13:37:39,774 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-12-07 13:37:39,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 13:37:39,774 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:37:39,775 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:37:39,775 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:37:39,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:37:39,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-12-07 13:37:39,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:37:39,775 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588144486] [2019-12-07 13:37:39,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:37:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:37:39,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:37:39,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588144486] [2019-12-07 13:37:39,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:37:39,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 13:37:39,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146620589] [2019-12-07 13:37:39,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:37:39,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:37:39,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:37:39,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:37:39,827 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2019-12-07 13:37:39,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:37:39,865 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-12-07 13:37:39,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:37:39,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 13:37:39,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:37:39,867 INFO L225 Difference]: With dead ends: 41 [2019-12-07 13:37:39,867 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 13:37:39,868 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:37:39,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 13:37:39,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2019-12-07 13:37:39,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 13:37:39,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-12-07 13:37:39,873 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-12-07 13:37:39,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:37:39,874 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-12-07 13:37:39,874 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:37:39,874 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-12-07 13:37:39,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 13:37:39,874 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:37:39,875 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:37:39,875 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:37:39,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:37:39,875 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2019-12-07 13:37:39,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:37:39,876 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238005558] [2019-12-07 13:37:39,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:37:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:37:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:37:39,916 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238005558] [2019-12-07 13:37:39,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:37:39,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 13:37:39,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012124460] [2019-12-07 13:37:39,917 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:37:39,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:37:39,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:37:39,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:37:39,917 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2019-12-07 13:37:39,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:37:39,954 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2019-12-07 13:37:39,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:37:39,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 13:37:39,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:37:39,955 INFO L225 Difference]: With dead ends: 43 [2019-12-07 13:37:39,955 INFO L226 Difference]: Without dead ends: 38 [2019-12-07 13:37:39,956 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:37:39,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-07 13:37:39,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2019-12-07 13:37:39,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 13:37:39,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-12-07 13:37:39,960 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2019-12-07 13:37:39,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:37:39,961 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-12-07 13:37:39,961 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:37:39,961 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-12-07 13:37:39,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 13:37:39,961 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:37:39,961 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:37:39,962 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:37:39,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:37:39,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-12-07 13:37:39,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:37:39,962 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921503213] [2019-12-07 13:37:39,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:37:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:37:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:37:40,012 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:37:40,012 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 13:37:40,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:37:40 BoogieIcfgContainer [2019-12-07 13:37:40,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:37:40,030 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:37:40,030 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:37:40,030 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:37:40,031 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:37:39" (3/4) ... [2019-12-07 13:37:40,034 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 13:37:40,034 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:37:40,036 INFO L168 Benchmark]: Toolchain (without parser) took 936.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 943.3 MB in the beginning and 1.0 GB in the end (delta: -97.6 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. [2019-12-07 13:37:40,036 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:37:40,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -176.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 13:37:40,038 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:37:40,038 INFO L168 Benchmark]: Boogie Preprocessor took 20.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:37:40,038 INFO L168 Benchmark]: RCFGBuilder took 231.22 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: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. [2019-12-07 13:37:40,039 INFO L168 Benchmark]: TraceAbstraction took 447.23 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: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 11.5 GB. [2019-12-07 13:37:40,039 INFO L168 Benchmark]: Witness Printer took 4.01 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. [2019-12-07 13:37:40,042 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 202.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -176.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.12 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. * Boogie Preprocessor took 20.06 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. * RCFGBuilder took 231.22 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: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 447.23 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: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.01 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.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L67] double x = 0.0 / 0.0; [L68] double y = 0.0 / 0.0; [L27] __uint32_t msw, lsw; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; [L69] double res = fmax_double(x, y); [L16] return x != x; [L71] COND TRUE !isnan_double(res) [L72] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 110 SDtfs, 22 SDslu, 110 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 13:37:41,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:37:41,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:37:41,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:37:41,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:37:41,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:37:41,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:37:41,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:37:41,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:37:41,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:37:41,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:37:41,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:37:41,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:37:41,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:37:41,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:37:41,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:37:41,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:37:41,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:37:41,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:37:41,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:37:41,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:37:41,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:37:41,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:37:41,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:37:41,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:37:41,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:37:41,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:37:41,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:37:41,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:37:41,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:37:41,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:37:41,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:37:41,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:37:41,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:37:41,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:37:41,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:37:41,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:37:41,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:37:41,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:37:41,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:37:41,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:37:41,437 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 13:37:41,447 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:37:41,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:37:41,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:37:41,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:37:41,448 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 13:37:41,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:37:41,449 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:37:41,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:37:41,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:37:41,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 13:37:41,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:37:41,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 13:37:41,449 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 13:37:41,450 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 13:37:41,450 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:37:41,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:37:41,450 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:37:41,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 13:37:41,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:37:41,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 13:37:41,450 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:37:41,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:37:41,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:37:41,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:37:41,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:37:41,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 13:37:41,451 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 13:37:41,451 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 13:37:41,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 13:37:41,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:37:41,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 13:37:41,452 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01b6390e563edc58f3f7d1f239b082df891f9006 [2019-12-07 13:37:41,614 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:37:41,621 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:37:41,624 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:37:41,625 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:37:41,625 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:37:41,625 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2019-12-07 13:37:41,663 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/data/87f4a537f/fc9edbd26c34415bbba3e2dbde604ef8/FLAG24ff71ca1 [2019-12-07 13:37:42,103 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:37:42,104 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2019-12-07 13:37:42,109 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/data/87f4a537f/fc9edbd26c34415bbba3e2dbde604ef8/FLAG24ff71ca1 [2019-12-07 13:37:42,121 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/data/87f4a537f/fc9edbd26c34415bbba3e2dbde604ef8 [2019-12-07 13:37:42,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:37:42,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:37:42,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:37:42,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:37:42,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:37:42,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:37:42" (1/1) ... [2019-12-07 13:37:42,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41944eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:42, skipping insertion in model container [2019-12-07 13:37:42,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:37:42" (1/1) ... [2019-12-07 13:37:42,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:37:42,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:37:42,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:37:42,261 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:37:42,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:37:42,296 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:37:42,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:42 WrapperNode [2019-12-07 13:37:42,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:37:42,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:37:42,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:37:42,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:37:42,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:42" (1/1) ... [2019-12-07 13:37:42,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:42" (1/1) ... [2019-12-07 13:37:42,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:37:42,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:37:42,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:37:42,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:37:42,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:42" (1/1) ... [2019-12-07 13:37:42,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:42" (1/1) ... [2019-12-07 13:37:42,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:42" (1/1) ... [2019-12-07 13:37:42,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:42" (1/1) ... [2019-12-07 13:37:42,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:42" (1/1) ... [2019-12-07 13:37:42,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:42" (1/1) ... [2019-12-07 13:37:42,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:42" (1/1) ... [2019-12-07 13:37:42,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:37:42,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:37:42,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:37:42,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:37:42,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:37:42,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-07 13:37:42,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 13:37:42,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 13:37:42,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:37:42,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:37:42,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 13:37:42,654 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:37:42,655 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-12-07 13:37:42,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:37:42 BoogieIcfgContainer [2019-12-07 13:37:42,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:37:42,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:37:42,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:37:42,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:37:42,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:37:42" (1/3) ... [2019-12-07 13:37:42,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7da32e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:37:42, skipping insertion in model container [2019-12-07 13:37:42,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:37:42" (2/3) ... [2019-12-07 13:37:42,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7da32e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:37:42, skipping insertion in model container [2019-12-07 13:37:42,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:37:42" (3/3) ... [2019-12-07 13:37:42,662 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2019-12-07 13:37:42,671 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:37:42,675 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 13:37:42,683 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 13:37:42,697 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:37:42,697 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 13:37:42,698 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:37:42,698 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:37:42,698 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:37:42,698 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:37:42,698 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:37:42,698 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:37:42,708 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-12-07 13:37:42,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:37:42,711 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:37:42,712 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:37:42,712 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:37:42,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:37:42,716 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-12-07 13:37:42,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 13:37:42,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217165240] [2019-12-07 13:37:42,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 13:37:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:37:42,789 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 13:37:42,792 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:37:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:37:42,801 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:37:42,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:37:42,804 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217165240] [2019-12-07 13:37:42,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:37:42,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 13:37:42,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437628035] [2019-12-07 13:37:42,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 13:37:42,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 13:37:42,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 13:37:42,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 13:37:42,818 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-12-07 13:37:42,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:37:42,830 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-12-07 13:37:42,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 13:37:42,831 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 13:37:42,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:37:42,838 INFO L225 Difference]: With dead ends: 54 [2019-12-07 13:37:42,838 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 13:37:42,840 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 13:37:42,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 13:37:42,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-07 13:37:42,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 13:37:42,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-12-07 13:37:42,862 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-12-07 13:37:42,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:37:42,863 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-12-07 13:37:42,863 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 13:37:42,863 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-12-07 13:37:42,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 13:37:42,863 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:37:42,863 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:37:43,064 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 13:37:43,065 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:37:43,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:37:43,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-12-07 13:37:43,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 13:37:43,068 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644586934] [2019-12-07 13:37:43,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 13:37:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:37:43,194 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 13:37:43,195 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:37:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:37:43,212 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:37:43,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:37:43,227 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644586934] [2019-12-07 13:37:43,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:37:43,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 13:37:43,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936131548] [2019-12-07 13:37:43,229 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:37:43,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 13:37:43,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:37:43,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:37:43,230 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2019-12-07 13:37:43,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:37:43,321 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2019-12-07 13:37:43,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 13:37:43,321 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-12-07 13:37:43,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:37:43,322 INFO L225 Difference]: With dead ends: 52 [2019-12-07 13:37:43,323 INFO L226 Difference]: Without dead ends: 47 [2019-12-07 13:37:43,323 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-12-07 13:37:43,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-12-07 13:37:43,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-12-07 13:37:43,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 13:37:43,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-12-07 13:37:43,330 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-12-07 13:37:43,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:37:43,330 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-12-07 13:37:43,330 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:37:43,330 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-12-07 13:37:43,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 13:37:43,331 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:37:43,331 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:37:43,532 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 13:37:43,532 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:37:43,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:37:43,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-12-07 13:37:43,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 13:37:43,535 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766010224] [2019-12-07 13:37:43,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 13:37:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:37:43,629 INFO L264 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 13:37:43,630 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:37:43,671 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:37:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:37:43,706 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:37:43,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:37:43,771 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766010224] [2019-12-07 13:37:43,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:37:43,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-12-07 13:37:43,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441075776] [2019-12-07 13:37:43,772 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 13:37:43,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 13:37:43,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 13:37:43,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-12-07 13:37:43,773 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2019-12-07 13:37:44,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:37:44,184 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2019-12-07 13:37:44,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 13:37:44,185 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-12-07 13:37:44,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:37:44,185 INFO L225 Difference]: With dead ends: 36 [2019-12-07 13:37:44,185 INFO L226 Difference]: Without dead ends: 27 [2019-12-07 13:37:44,186 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-12-07 13:37:44,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-07 13:37:44,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-12-07 13:37:44,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 13:37:44,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2019-12-07 13:37:44,189 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2019-12-07 13:37:44,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:37:44,189 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2019-12-07 13:37:44,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 13:37:44,190 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2019-12-07 13:37:44,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 13:37:44,190 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:37:44,190 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:37:44,391 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 13:37:44,391 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:37:44,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:37:44,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2019-12-07 13:37:44,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 13:37:44,394 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504903341] [2019-12-07 13:37:44,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/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 [2019-12-07 13:37:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:37:44,521 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 13:37:44,523 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:37:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:37:44,531 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:37:44,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:37:44,541 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504903341] [2019-12-07 13:37:44,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:37:44,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 13:37:44,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853206160] [2019-12-07 13:37:44,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:37:44,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 13:37:44,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:37:44,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:37:44,543 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2019-12-07 13:37:44,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:37:44,610 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2019-12-07 13:37:44,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 13:37:44,611 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-07 13:37:44,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:37:44,612 INFO L225 Difference]: With dead ends: 52 [2019-12-07 13:37:44,612 INFO L226 Difference]: Without dead ends: 47 [2019-12-07 13:37:44,612 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-12-07 13:37:44,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-12-07 13:37:44,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-12-07 13:37:44,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 13:37:44,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2019-12-07 13:37:44,617 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2019-12-07 13:37:44,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:37:44,617 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2019-12-07 13:37:44,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:37:44,617 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2019-12-07 13:37:44,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 13:37:44,618 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:37:44,618 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:37:44,819 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 13:37:44,819 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:37:44,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:37:44,820 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2019-12-07 13:37:44,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 13:37:44,821 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418709705] [2019-12-07 13:37:44,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-12-07 13:37:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:37:44,949 INFO L264 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 13:37:44,951 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:37:45,013 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:37:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:37:45,053 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:37:45,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:37:45,154 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418709705] [2019-12-07 13:37:45,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:37:45,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-12-07 13:37:45,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376323950] [2019-12-07 13:37:45,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 13:37:45,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 13:37:45,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 13:37:45,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-12-07 13:37:45,156 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2019-12-07 13:37:45,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:37:45,582 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2019-12-07 13:37:45,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 13:37:45,583 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2019-12-07 13:37:45,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:37:45,583 INFO L225 Difference]: With dead ends: 32 [2019-12-07 13:37:45,583 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 13:37:45,584 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-12-07 13:37:45,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 13:37:45,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 13:37:45,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 13:37:45,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-12-07 13:37:45,587 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2019-12-07 13:37:45,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:37:45,588 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-12-07 13:37:45,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 13:37:45,588 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-12-07 13:37:45,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 13:37:45,588 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:37:45,589 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:37:45,789 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 13:37:45,790 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:37:45,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:37:45,790 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2019-12-07 13:37:45,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 13:37:45,791 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902808728] [2019-12-07 13:37:45,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-12-07 13:37:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:37:45,892 INFO L264 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 13:37:45,893 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:37:45,929 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:37:45,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:37:45,961 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:37:46,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:37:46,025 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902808728] [2019-12-07 13:37:46,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:37:46,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-12-07 13:37:46,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940944884] [2019-12-07 13:37:46,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 13:37:46,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 13:37:46,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 13:37:46,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-12-07 13:37:46,026 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2019-12-07 13:37:46,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:37:46,235 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-12-07 13:37:46,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 13:37:46,235 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-12-07 13:37:46,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:37:46,236 INFO L225 Difference]: With dead ends: 23 [2019-12-07 13:37:46,236 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 13:37:46,236 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-12-07 13:37:46,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 13:37:46,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 13:37:46,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 13:37:46,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 13:37:46,237 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-12-07 13:37:46,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:37:46,237 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 13:37:46,237 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 13:37:46,237 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 13:37:46,237 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 13:37:46,438 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 13:37:46,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 13:37:46,654 INFO L246 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2019-12-07 13:37:46,654 INFO L246 CegarLoopResult]: For program point L60-2(line 60) no Hoare annotation was computed. [2019-12-07 13:37:46,654 INFO L242 CegarLoopResult]: At program point L60-3(lines 53 61) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmax_double_#res| |ULTIMATE.start_fmax_double_#res|)) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmax_double_~y (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53))))) [2019-12-07 13:37:46,655 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 13:37:46,655 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 13:37:46,655 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 13:37:46,655 INFO L246 CegarLoopResult]: For program point L57(lines 57 58) no Hoare annotation was computed. [2019-12-07 13:37:46,655 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2019-12-07 13:37:46,655 INFO L242 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmax_double_#res| |ULTIMATE.start_fmax_double_#res|)) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmax_double_~y (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2019-12-07 13:37:46,655 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 13:37:46,655 INFO L246 CegarLoopResult]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2019-12-07 13:37:46,655 INFO L242 CegarLoopResult]: At program point L29-2(lines 29 34) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)) (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) [2019-12-07 13:37:46,655 INFO L246 CegarLoopResult]: For program point L29-3(lines 26 51) no Hoare annotation was computed. [2019-12-07 13:37:46,655 INFO L246 CegarLoopResult]: For program point L29-5(lines 29 34) no Hoare annotation was computed. [2019-12-07 13:37:46,656 INFO L242 CegarLoopResult]: At program point L29-6(lines 29 34) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)) (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) [2019-12-07 13:37:46,656 INFO L246 CegarLoopResult]: For program point L29-7(lines 26 51) no Hoare annotation was computed. [2019-12-07 13:37:46,656 INFO L242 CegarLoopResult]: At program point L50(lines 26 51) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)) (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) [2019-12-07 13:37:46,656 INFO L242 CegarLoopResult]: At program point L50-1(lines 26 51) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)))) (or (and (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|)) .cse0) (and .cse0 (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))))) [2019-12-07 13:37:46,656 INFO L246 CegarLoopResult]: For program point L46(lines 46 50) no Hoare annotation was computed. [2019-12-07 13:37:46,656 INFO L246 CegarLoopResult]: For program point L46-1(lines 46 50) no Hoare annotation was computed. [2019-12-07 13:37:46,656 INFO L249 CegarLoopResult]: At program point L75(lines 63 76) the Hoare annotation is: true [2019-12-07 13:37:46,656 INFO L246 CegarLoopResult]: For program point L42(lines 42 50) no Hoare annotation was computed. [2019-12-07 13:37:46,656 INFO L246 CegarLoopResult]: For program point L42-1(lines 42 50) no Hoare annotation was computed. [2019-12-07 13:37:46,656 INFO L246 CegarLoopResult]: For program point L71(lines 71 74) no Hoare annotation was computed. [2019-12-07 13:37:46,656 INFO L246 CegarLoopResult]: For program point L55(lines 55 56) no Hoare annotation was computed. [2019-12-07 13:37:46,657 INFO L246 CegarLoopResult]: For program point L72(line 72) no Hoare annotation was computed. [2019-12-07 13:37:46,657 INFO L246 CegarLoopResult]: For program point L39(lines 39 50) no Hoare annotation was computed. [2019-12-07 13:37:46,657 INFO L246 CegarLoopResult]: For program point L39-1(lines 39 50) no Hoare annotation was computed. [2019-12-07 13:37:46,661 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 13:37:46,667 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 13:37:46,669 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 13:37:46,669 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 13:37:46,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:37:46 BoogieIcfgContainer [2019-12-07 13:37:46,671 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:37:46,672 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:37:46,672 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:37:46,672 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:37:46,673 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:37:42" (3/4) ... [2019-12-07 13:37:46,676 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 13:37:46,687 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-12-07 13:37:46,687 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-12-07 13:37:46,688 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 13:37:46,709 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~DOUBLE(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-12-07 13:37:46,709 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result [2019-12-07 13:37:46,709 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(0bv32 == \result) && !~fp.eq~DOUBLE(y, y)) || (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) [2019-12-07 13:37:46,733 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7dc676cd-2c4a-438a-b090-59e04c98958b/bin/uautomizer/witness.graphml [2019-12-07 13:37:46,733 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:37:46,735 INFO L168 Benchmark]: Toolchain (without parser) took 4610.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 952.4 MB in the beginning and 857.9 MB in the end (delta: 94.5 MB). Peak memory consumption was 218.2 MB. Max. memory is 11.5 GB. [2019-12-07 13:37:46,735 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:37:46,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.16 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 936.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:37:46,736 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -183.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. [2019-12-07 13:37:46,736 INFO L168 Benchmark]: Boogie Preprocessor took 21.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 13:37:46,736 INFO L168 Benchmark]: RCFGBuilder took 280.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-12-07 13:37:46,736 INFO L168 Benchmark]: TraceAbstraction took 4014.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 864.7 MB in the end (delta: 221.3 MB). Peak memory consumption was 221.3 MB. Max. memory is 11.5 GB. [2019-12-07 13:37:46,736 INFO L168 Benchmark]: Witness Printer took 61.63 ms. Allocated memory is still 1.2 GB. Free memory was 864.7 MB in the beginning and 857.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 13:37:46,738 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 171.16 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 936.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 56.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -183.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 280.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4014.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 864.7 MB in the end (delta: 221.3 MB). Peak memory consumption was 221.3 MB. Max. memory is 11.5 GB. * Witness Printer took 61.63 ms. Allocated memory is still 1.2 GB. Free memory was 864.7 MB in the beginning and 857.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 72]: 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: 16]: Loop Invariant [2019-12-07 13:37:46,742 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 13:37:46,742 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (!~fp.eq~DOUBLE(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (!(0bv32 == \result) && !~fp.eq~DOUBLE(y, y)) || (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 53]: Loop Invariant [2019-12-07 13:37:46,744 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 13:37:46,744 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: !~fp.eq~DOUBLE(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 3.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 182 SDtfs, 107 SDslu, 476 SDs, 0 SdLazy, 126 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 184 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8512 SizeOfPredicates, 32 NumberOfNonLiveVariables, 309 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...