./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63854123d7ab77bd9f32ab7eefa710cb72f6a12a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63854123d7ab77bd9f32ab7eefa710cb72f6a12a ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:13:13,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:13:13,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:13:13,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:13:13,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:13:13,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:13:13,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:13:13,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:13:13,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:13:13,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:13:13,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:13:13,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:13:13,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:13:13,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:13:13,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:13:13,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:13:13,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:13:13,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:13:13,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:13:13,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:13:13,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:13:13,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:13:13,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:13:13,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:13:13,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:13:13,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:13:13,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:13:13,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:13:13,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:13:13,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:13:13,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:13:13,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:13:13,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:13:13,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:13:13,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:13:13,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:13:13,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:13:13,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:13:13,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:13:13,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:13:13,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:13:13,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:13:13,584 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:13:13,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:13:13,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:13:13,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:13:13,587 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:13:13,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:13:13,588 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:13:13,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:13:13,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:13:13,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:13:13,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:13:13,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:13:13,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:13:13,591 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:13:13,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:13:13,592 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:13:13,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:13:13,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:13:13,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:13:13,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:13:13,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:13:13,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:13:13,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:13:13,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:13:13,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:13:13,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:13:13,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:13:13,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:13:13,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:13:13,598 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2020-12-01 15:13:13,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:13:13,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:13:13,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:13:13,909 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:13:13,912 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:13:13,913 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-12-01 15:13:14,018 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/data/c2f43c563/2fe7ef35158f4d66961a9801079c1ba6/FLAG862c779be [2020-12-01 15:13:14,527 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:13:14,528 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-12-01 15:13:14,538 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/data/c2f43c563/2fe7ef35158f4d66961a9801079c1ba6/FLAG862c779be [2020-12-01 15:13:14,861 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/data/c2f43c563/2fe7ef35158f4d66961a9801079c1ba6 [2020-12-01 15:13:14,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:13:14,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:13:14,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:13:14,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:13:14,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:13:14,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:13:14" (1/1) ... [2020-12-01 15:13:14,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d3f966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:14, skipping insertion in model container [2020-12-01 15:13:14,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:13:14" (1/1) ... [2020-12-01 15:13:14,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:13:14,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:13:15,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:13:15,309 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:13:15,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:13:15,428 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:13:15,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:15 WrapperNode [2020-12-01 15:13:15,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:13:15,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:13:15,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:13:15,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:13:15,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:15" (1/1) ... [2020-12-01 15:13:15,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:15" (1/1) ... [2020-12-01 15:13:15,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:13:15,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:13:15,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:13:15,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:13:15,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:15" (1/1) ... [2020-12-01 15:13:15,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:15" (1/1) ... [2020-12-01 15:13:15,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:15" (1/1) ... [2020-12-01 15:13:15,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:15" (1/1) ... [2020-12-01 15:13:15,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:15" (1/1) ... [2020-12-01 15:13:15,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:15" (1/1) ... [2020-12-01 15:13:15,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:15" (1/1) ... [2020-12-01 15:13:15,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:13:15,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:13:15,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:13:15,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:13:15,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/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 [2020-12-01 15:13:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:13:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:13:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:13:15,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:13:16,175 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:13:16,176 INFO L298 CfgBuilder]: Removed 48 assume(true) statements. [2020-12-01 15:13:16,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:13:16 BoogieIcfgContainer [2020-12-01 15:13:16,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:13:16,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:13:16,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:13:16,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:13:16,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:13:14" (1/3) ... [2020-12-01 15:13:16,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e647717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:13:16, skipping insertion in model container [2020-12-01 15:13:16,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:15" (2/3) ... [2020-12-01 15:13:16,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e647717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:13:16, skipping insertion in model container [2020-12-01 15:13:16,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:13:16" (3/3) ... [2020-12-01 15:13:16,210 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-12-01 15:13:16,226 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:13:16,230 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-01 15:13:16,243 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-01 15:13:16,302 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:13:16,303 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:13:16,303 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:13:16,303 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:13:16,303 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:13:16,303 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:13:16,304 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:13:16,304 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:13:16,329 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-12-01 15:13:16,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:13:16,335 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:13:16,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:13:16,337 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:13:16,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:13:16,344 INFO L82 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2020-12-01 15:13:16,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:13:16,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698851997] [2020-12-01 15:13:16,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:13:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:13:16,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:16,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698851997] [2020-12-01 15:13:16,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:13:16,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-01 15:13:16,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88463412] [2020-12-01 15:13:16,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:13:16,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:13:16,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:13:16,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:13:16,781 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 7 states. [2020-12-01 15:13:17,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:13:17,264 INFO L93 Difference]: Finished difference Result 280 states and 407 transitions. [2020-12-01 15:13:17,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-01 15:13:17,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-01 15:13:17,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:13:17,294 INFO L225 Difference]: With dead ends: 280 [2020-12-01 15:13:17,295 INFO L226 Difference]: Without dead ends: 181 [2020-12-01 15:13:17,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-12-01 15:13:17,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-12-01 15:13:17,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 119. [2020-12-01 15:13:17,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-01 15:13:17,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2020-12-01 15:13:17,388 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 15 [2020-12-01 15:13:17,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:13:17,389 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2020-12-01 15:13:17,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:13:17,390 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2020-12-01 15:13:17,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 15:13:17,392 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:13:17,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:13:17,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:13:17,396 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:13:17,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:13:17,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1395490240, now seen corresponding path program 1 times [2020-12-01 15:13:17,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:13:17,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463120366] [2020-12-01 15:13:17,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:13:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:13:17,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:17,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463120366] [2020-12-01 15:13:17,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:13:17,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-01 15:13:17,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102787343] [2020-12-01 15:13:17,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:13:17,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:13:17,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:13:17,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:13:17,596 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand 7 states. [2020-12-01 15:13:17,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:13:17,851 INFO L93 Difference]: Finished difference Result 194 states and 243 transitions. [2020-12-01 15:13:17,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 15:13:17,854 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-12-01 15:13:17,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:13:17,856 INFO L225 Difference]: With dead ends: 194 [2020-12-01 15:13:17,856 INFO L226 Difference]: Without dead ends: 165 [2020-12-01 15:13:17,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:13:17,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-12-01 15:13:17,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 108. [2020-12-01 15:13:17,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-01 15:13:17,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2020-12-01 15:13:17,878 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 19 [2020-12-01 15:13:17,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:13:17,879 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2020-12-01 15:13:17,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:13:17,879 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2020-12-01 15:13:17,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 15:13:17,881 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:13:17,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:13:17,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:13:17,882 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:13:17,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:13:17,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1831228676, now seen corresponding path program 1 times [2020-12-01 15:13:17,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:13:17,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701748899] [2020-12-01 15:13:17,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:13:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:13:18,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:18,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701748899] [2020-12-01 15:13:18,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:13:18,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-01 15:13:18,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88447974] [2020-12-01 15:13:18,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-01 15:13:18,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:13:18,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-01 15:13:18,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-12-01 15:13:18,148 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand 14 states. [2020-12-01 15:13:18,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:13:18,559 INFO L93 Difference]: Finished difference Result 167 states and 210 transitions. [2020-12-01 15:13:18,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-01 15:13:18,561 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2020-12-01 15:13:18,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:13:18,564 INFO L225 Difference]: With dead ends: 167 [2020-12-01 15:13:18,564 INFO L226 Difference]: Without dead ends: 162 [2020-12-01 15:13:18,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-12-01 15:13:18,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-01 15:13:18,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 117. [2020-12-01 15:13:18,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-12-01 15:13:18,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 153 transitions. [2020-12-01 15:13:18,598 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 153 transitions. Word has length 23 [2020-12-01 15:13:18,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:13:18,600 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 153 transitions. [2020-12-01 15:13:18,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-01 15:13:18,600 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 153 transitions. [2020-12-01 15:13:18,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 15:13:18,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:13:18,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:13:18,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:13:18,605 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:13:18,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:13:18,606 INFO L82 PathProgramCache]: Analyzing trace with hash 384833474, now seen corresponding path program 1 times [2020-12-01 15:13:18,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:13:18,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934193620] [2020-12-01 15:13:18,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:13:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:13:18,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:18,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934193620] [2020-12-01 15:13:18,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:13:18,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-01 15:13:18,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357247015] [2020-12-01 15:13:18,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:13:18,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:13:18,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:13:18,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:13:18,775 INFO L87 Difference]: Start difference. First operand 117 states and 153 transitions. Second operand 7 states. [2020-12-01 15:13:18,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:13:18,946 INFO L93 Difference]: Finished difference Result 183 states and 231 transitions. [2020-12-01 15:13:18,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:13:18,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-01 15:13:18,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:13:18,950 INFO L225 Difference]: With dead ends: 183 [2020-12-01 15:13:18,950 INFO L226 Difference]: Without dead ends: 158 [2020-12-01 15:13:18,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:13:18,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-01 15:13:18,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 120. [2020-12-01 15:13:18,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-12-01 15:13:18,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2020-12-01 15:13:18,972 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 23 [2020-12-01 15:13:18,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:13:18,973 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2020-12-01 15:13:18,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:13:18,973 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2020-12-01 15:13:18,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 15:13:18,976 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:13:18,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:13:18,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:13:18,979 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:13:18,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:13:18,979 INFO L82 PathProgramCache]: Analyzing trace with hash 384893056, now seen corresponding path program 1 times [2020-12-01 15:13:18,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:13:18,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259343143] [2020-12-01 15:13:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:13:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:13:19,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:19,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259343143] [2020-12-01 15:13:19,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:13:19,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-01 15:13:19,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523738374] [2020-12-01 15:13:19,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:13:19,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:13:19,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:13:19,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:13:19,190 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand 7 states. [2020-12-01 15:13:19,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:13:19,324 INFO L93 Difference]: Finished difference Result 167 states and 211 transitions. [2020-12-01 15:13:19,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:13:19,325 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-01 15:13:19,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:13:19,327 INFO L225 Difference]: With dead ends: 167 [2020-12-01 15:13:19,327 INFO L226 Difference]: Without dead ends: 142 [2020-12-01 15:13:19,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:13:19,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-01 15:13:19,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 120. [2020-12-01 15:13:19,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-12-01 15:13:19,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2020-12-01 15:13:19,339 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 23 [2020-12-01 15:13:19,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:13:19,340 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2020-12-01 15:13:19,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:13:19,340 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2020-12-01 15:13:19,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 15:13:19,347 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:13:19,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:13:19,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:13:19,348 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:13:19,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:13:19,349 INFO L82 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2020-12-01 15:13:19,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:13:19,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780389916] [2020-12-01 15:13:19,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:13:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:13:19,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:19,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780389916] [2020-12-01 15:13:19,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:13:19,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 15:13:19,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792274165] [2020-12-01 15:13:19,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:13:19,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:13:19,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:13:19,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:13:19,510 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand 6 states. [2020-12-01 15:13:19,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:13:19,807 INFO L93 Difference]: Finished difference Result 342 states and 430 transitions. [2020-12-01 15:13:19,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:13:19,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-12-01 15:13:19,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:13:19,811 INFO L225 Difference]: With dead ends: 342 [2020-12-01 15:13:19,811 INFO L226 Difference]: Without dead ends: 296 [2020-12-01 15:13:19,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:13:19,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-12-01 15:13:19,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 134. [2020-12-01 15:13:19,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-12-01 15:13:19,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 177 transitions. [2020-12-01 15:13:19,829 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 177 transitions. Word has length 23 [2020-12-01 15:13:19,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:13:19,834 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 177 transitions. [2020-12-01 15:13:19,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:13:19,835 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 177 transitions. [2020-12-01 15:13:19,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 15:13:19,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:13:19,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:13:19,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:13:19,839 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:13:19,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:13:19,840 INFO L82 PathProgramCache]: Analyzing trace with hash 84509231, now seen corresponding path program 1 times [2020-12-01 15:13:19,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:13:19,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914119794] [2020-12-01 15:13:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:13:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:13:19,911 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:13:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:13:19,950 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:13:20,007 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:13:20,007 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:13:20,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 15:13:20,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:13:20 BoogieIcfgContainer [2020-12-01 15:13:20,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:13:20,087 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:13:20,087 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:13:20,088 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:13:20,088 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:13:16" (3/4) ... [2020-12-01 15:13:20,091 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 15:13:20,091 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:13:20,097 INFO L168 Benchmark]: Toolchain (without parser) took 5225.92 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 56.6 MB in the beginning and 55.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:13:20,098 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 90.2 MB. Free memory was 65.8 MB in the beginning and 65.8 MB in the end (delta: 30.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:13:20,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 554.86 ms. Allocated memory is still 90.2 MB. Free memory was 56.4 MB in the beginning and 64.7 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:13:20,100 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.97 ms. Allocated memory is still 90.2 MB. Free memory was 64.7 MB in the beginning and 62.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:13:20,101 INFO L168 Benchmark]: Boogie Preprocessor took 40.15 ms. Allocated memory is still 90.2 MB. Free memory was 62.4 MB in the beginning and 60.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:13:20,101 INFO L168 Benchmark]: RCFGBuilder took 626.46 ms. Allocated memory is still 90.2 MB. Free memory was 60.5 MB in the beginning and 31.2 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:13:20,102 INFO L168 Benchmark]: TraceAbstraction took 3906.29 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 30.8 MB in the beginning and 55.6 MB in the end (delta: -24.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:13:20,103 INFO L168 Benchmark]: Witness Printer took 3.92 ms. Allocated memory is still 121.6 MB. Free memory is still 55.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:13:20,108 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 90.2 MB. Free memory was 65.8 MB in the beginning and 65.8 MB in the end (delta: 30.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 554.86 ms. Allocated memory is still 90.2 MB. Free memory was 56.4 MB in the beginning and 64.7 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.97 ms. Allocated memory is still 90.2 MB. Free memory was 64.7 MB in the beginning and 62.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.15 ms. Allocated memory is still 90.2 MB. Free memory was 62.4 MB in the beginning and 60.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 626.46 ms. Allocated memory is still 90.2 MB. Free memory was 60.5 MB in the beginning and 31.2 MB in the end (delta: 29.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3906.29 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 30.8 MB in the beginning and 55.6 MB in the end (delta: -24.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Witness Printer took 3.92 ms. Allocated memory is still 121.6 MB. Free memory is still 55.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 102, overapproximation of bitwiseAnd at line 100. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] b = base2flt(mb, eb) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND TRUE !(cond) [L3] __assert_fail("0", "soft_float_4-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 93 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.7s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 720 SDtfs, 1258 SDslu, 3362 SDs, 0 SdLazy, 626 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 386 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 7020 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-69874e2 [2020-12-01 15:13:23,003 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-12-01 15:13:23,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:13:23,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:13:23,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:13:23,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:13:23,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:13:23,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:13:23,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:13:23,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:13:23,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:13:23,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:13:23,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:13:23,186 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 15:13:23,242 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:13:23,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:13:23,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:13:23,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:13:23,247 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:13:23,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:13:23,247 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:13:23,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:13:23,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:13:23,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:13:23,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:13:23,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:13:23,250 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 15:13:23,250 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 15:13:23,251 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:13:23,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:13:23,251 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:13:23,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:13:23,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:13:23,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:13:23,252 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:13:23,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:13:23,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:13:23,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:13:23,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:13:23,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:13:23,254 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 15:13:23,254 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 15:13:23,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:13:23,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:13:23,255 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 15:13:23,255 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63854123d7ab77bd9f32ab7eefa710cb72f6a12a [2020-12-01 15:13:23,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:13:23,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:13:23,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:13:23,765 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:13:23,766 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:13:23,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-12-01 15:13:23,854 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/data/3a54eaecc/0ae6846d453d41ea91ec4ac4096520aa/FLAG903a3ab65 [2020-12-01 15:13:24,616 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:13:24,617 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2020-12-01 15:13:24,634 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/data/3a54eaecc/0ae6846d453d41ea91ec4ac4096520aa/FLAG903a3ab65 [2020-12-01 15:13:24,904 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/data/3a54eaecc/0ae6846d453d41ea91ec4ac4096520aa [2020-12-01 15:13:24,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:13:24,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:13:24,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:13:24,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:13:24,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:13:24,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:13:24" (1/1) ... [2020-12-01 15:13:24,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d581718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:24, skipping insertion in model container [2020-12-01 15:13:24,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:13:24" (1/1) ... [2020-12-01 15:13:24,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:13:24,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:13:25,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:13:25,200 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:13:25,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:13:25,332 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:13:25,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:25 WrapperNode [2020-12-01 15:13:25,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:13:25,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:13:25,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:13:25,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:13:25,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:25" (1/1) ... [2020-12-01 15:13:25,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:25" (1/1) ... [2020-12-01 15:13:25,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:13:25,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:13:25,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:13:25,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:13:25,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:25" (1/1) ... [2020-12-01 15:13:25,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:25" (1/1) ... [2020-12-01 15:13:25,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:25" (1/1) ... [2020-12-01 15:13:25,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:25" (1/1) ... [2020-12-01 15:13:25,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:25" (1/1) ... [2020-12-01 15:13:25,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:25" (1/1) ... [2020-12-01 15:13:25,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:25" (1/1) ... [2020-12-01 15:13:25,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:13:25,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:13:25,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:13:25,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:13:25,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/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 [2020-12-01 15:13:25,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 15:13:25,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:13:25,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:13:25,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:13:26,166 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:13:26,170 INFO L298 CfgBuilder]: Removed 48 assume(true) statements. [2020-12-01 15:13:26,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:13:26 BoogieIcfgContainer [2020-12-01 15:13:26,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:13:26,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:13:26,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:13:26,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:13:26,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:13:24" (1/3) ... [2020-12-01 15:13:26,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108a9123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:13:26, skipping insertion in model container [2020-12-01 15:13:26,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:13:25" (2/3) ... [2020-12-01 15:13:26,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108a9123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:13:26, skipping insertion in model container [2020-12-01 15:13:26,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:13:26" (3/3) ... [2020-12-01 15:13:26,185 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-12-01 15:13:26,203 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:13:26,207 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-01 15:13:26,221 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-01 15:13:26,257 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:13:26,257 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:13:26,257 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:13:26,257 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:13:26,257 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:13:26,258 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:13:26,258 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:13:26,258 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:13:26,275 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-12-01 15:13:26,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:13:26,301 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:13:26,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:13:26,305 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:13:26,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:13:26,313 INFO L82 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2020-12-01 15:13:26,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:13:26,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122998130] [2020-12-01 15:13:26,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/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 [2020-12-01 15:13:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:13:26,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-01 15:13:26,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:13:26,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:26,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:13:26,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:26,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122998130] [2020-12-01 15:13:26,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:13:26,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-12-01 15:13:26,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527126546] [2020-12-01 15:13:26,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:13:26,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:13:26,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:13:26,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:13:26,688 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 5 states. [2020-12-01 15:13:26,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:13:26,991 INFO L93 Difference]: Finished difference Result 238 states and 340 transitions. [2020-12-01 15:13:26,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:13:26,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-01 15:13:26,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:13:27,011 INFO L225 Difference]: With dead ends: 238 [2020-12-01 15:13:27,012 INFO L226 Difference]: Without dead ends: 139 [2020-12-01 15:13:27,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:13:27,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-12-01 15:13:27,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-12-01 15:13:27,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-01 15:13:27,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 115 transitions. [2020-12-01 15:13:27,099 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 115 transitions. Word has length 15 [2020-12-01 15:13:27,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:13:27,100 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 115 transitions. [2020-12-01 15:13:27,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:13:27,100 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 115 transitions. [2020-12-01 15:13:27,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 15:13:27,105 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:13:27,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:13:27,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 15:13:27,328 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:13:27,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:13:27,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1695814483, now seen corresponding path program 1 times [2020-12-01 15:13:27,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:13:27,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45512672] [2020-12-01 15:13:27,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/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 [2020-12-01 15:13:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:13:27,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-01 15:13:27,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:13:27,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:27,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:13:27,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:27,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45512672] [2020-12-01 15:13:27,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:13:27,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-12-01 15:13:27,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211171250] [2020-12-01 15:13:27,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:13:27,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:13:27,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:13:27,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:13:27,598 INFO L87 Difference]: Start difference. First operand 86 states and 115 transitions. Second operand 6 states. [2020-12-01 15:13:27,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:13:27,870 INFO L93 Difference]: Finished difference Result 226 states and 285 transitions. [2020-12-01 15:13:27,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 15:13:27,871 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-01 15:13:27,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:13:27,874 INFO L225 Difference]: With dead ends: 226 [2020-12-01 15:13:27,874 INFO L226 Difference]: Without dead ends: 200 [2020-12-01 15:13:27,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:13:27,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-12-01 15:13:27,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 119. [2020-12-01 15:13:27,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-01 15:13:27,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2020-12-01 15:13:27,893 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 19 [2020-12-01 15:13:27,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:13:27,894 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2020-12-01 15:13:27,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:13:27,894 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2020-12-01 15:13:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 15:13:27,896 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:13:27,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:13:28,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 15:13:28,116 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:13:28,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:13:28,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1395430658, now seen corresponding path program 1 times [2020-12-01 15:13:28,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:13:28,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985098564] [2020-12-01 15:13:28,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/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 [2020-12-01 15:13:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:13:28,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 15:13:28,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:13:28,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:28,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:13:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:28,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985098564] [2020-12-01 15:13:28,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:13:28,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-12-01 15:13:28,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453276618] [2020-12-01 15:13:28,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:13:28,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:13:28,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:13:28,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:13:28,291 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand 7 states. [2020-12-01 15:13:28,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:13:28,651 INFO L93 Difference]: Finished difference Result 214 states and 266 transitions. [2020-12-01 15:13:28,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-01 15:13:28,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-12-01 15:13:28,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:13:28,654 INFO L225 Difference]: With dead ends: 214 [2020-12-01 15:13:28,654 INFO L226 Difference]: Without dead ends: 185 [2020-12-01 15:13:28,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-12-01 15:13:28,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-12-01 15:13:28,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 108. [2020-12-01 15:13:28,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-01 15:13:28,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2020-12-01 15:13:28,684 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 19 [2020-12-01 15:13:28,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:13:28,684 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2020-12-01 15:13:28,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:13:28,685 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2020-12-01 15:13:28,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 15:13:28,690 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:13:28,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:13:28,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 15:13:28,909 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:13:28,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:13:28,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1831228676, now seen corresponding path program 1 times [2020-12-01 15:13:28,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:13:28,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883854458] [2020-12-01 15:13:28,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/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 [2020-12-01 15:13:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:13:28,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-01 15:13:28,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:13:29,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:29,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:13:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:29,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883854458] [2020-12-01 15:13:29,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:13:29,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2020-12-01 15:13:29,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210122794] [2020-12-01 15:13:29,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:13:29,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:13:29,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:13:29,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:13:29,139 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand 9 states. [2020-12-01 15:13:29,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:13:29,560 INFO L93 Difference]: Finished difference Result 183 states and 230 transitions. [2020-12-01 15:13:29,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:13:29,561 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-12-01 15:13:29,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:13:29,564 INFO L225 Difference]: With dead ends: 183 [2020-12-01 15:13:29,564 INFO L226 Difference]: Without dead ends: 179 [2020-12-01 15:13:29,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-12-01 15:13:29,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-12-01 15:13:29,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 125. [2020-12-01 15:13:29,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-01 15:13:29,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2020-12-01 15:13:29,579 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 23 [2020-12-01 15:13:29,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:13:29,580 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2020-12-01 15:13:29,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:13:29,580 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2020-12-01 15:13:29,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 15:13:29,582 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:13:29,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:13:29,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-01 15:13:29,803 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:13:29,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:13:29,804 INFO L82 PathProgramCache]: Analyzing trace with hash 384833474, now seen corresponding path program 1 times [2020-12-01 15:13:29,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:13:29,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153293954] [2020-12-01 15:13:29,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/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 [2020-12-01 15:13:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:13:29,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 15:13:29,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:13:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:29,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:13:29,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:29,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153293954] [2020-12-01 15:13:29,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:13:29,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-12-01 15:13:29,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132437629] [2020-12-01 15:13:29,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:13:29,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:13:29,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:13:29,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:13:29,990 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand 7 states. [2020-12-01 15:13:30,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:13:30,201 INFO L93 Difference]: Finished difference Result 182 states and 230 transitions. [2020-12-01 15:13:30,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:13:30,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-01 15:13:30,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:13:30,203 INFO L225 Difference]: With dead ends: 182 [2020-12-01 15:13:30,203 INFO L226 Difference]: Without dead ends: 149 [2020-12-01 15:13:30,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:13:30,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-12-01 15:13:30,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-12-01 15:13:30,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-01 15:13:30,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 156 transitions. [2020-12-01 15:13:30,225 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 156 transitions. Word has length 23 [2020-12-01 15:13:30,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:13:30,225 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 156 transitions. [2020-12-01 15:13:30,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:13:30,226 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 156 transitions. [2020-12-01 15:13:30,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 15:13:30,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:13:30,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:13:30,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-01 15:13:30,447 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:13:30,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:13:30,447 INFO L82 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2020-12-01 15:13:30,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:13:30,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511525972] [2020-12-01 15:13:30,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/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 [2020-12-01 15:13:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:13:30,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-01 15:13:30,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:13:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:30,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:13:30,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:30,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511525972] [2020-12-01 15:13:30,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:13:30,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2020-12-01 15:13:30,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65996527] [2020-12-01 15:13:30,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:13:30,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:13:30,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:13:30,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:13:30,698 INFO L87 Difference]: Start difference. First operand 119 states and 156 transitions. Second operand 8 states. [2020-12-01 15:13:31,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:13:31,563 INFO L93 Difference]: Finished difference Result 369 states and 481 transitions. [2020-12-01 15:13:31,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-01 15:13:31,568 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-12-01 15:13:31,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:13:31,570 INFO L225 Difference]: With dead ends: 369 [2020-12-01 15:13:31,570 INFO L226 Difference]: Without dead ends: 323 [2020-12-01 15:13:31,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2020-12-01 15:13:31,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-01 15:13:31,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 129. [2020-12-01 15:13:31,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-12-01 15:13:31,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 172 transitions. [2020-12-01 15:13:31,589 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 172 transitions. Word has length 23 [2020-12-01 15:13:31,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:13:31,589 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 172 transitions. [2020-12-01 15:13:31,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:13:31,590 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 172 transitions. [2020-12-01 15:13:31,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 15:13:31,591 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:13:31,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:13:31,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-01 15:13:31,813 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:13:31,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:13:31,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1177408342, now seen corresponding path program 1 times [2020-12-01 15:13:31,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:13:31,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110378125] [2020-12-01 15:13:31,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-01 15:13:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:13:31,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-01 15:13:31,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:13:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:31,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:13:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:32,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110378125] [2020-12-01 15:13:32,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:13:32,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2020-12-01 15:13:32,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037587574] [2020-12-01 15:13:32,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:13:32,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:13:32,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:13:32,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:13:32,028 INFO L87 Difference]: Start difference. First operand 129 states and 172 transitions. Second operand 9 states. [2020-12-01 15:13:32,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:13:32,430 INFO L93 Difference]: Finished difference Result 179 states and 224 transitions. [2020-12-01 15:13:32,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-01 15:13:32,430 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-12-01 15:13:32,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:13:32,432 INFO L225 Difference]: With dead ends: 179 [2020-12-01 15:13:32,432 INFO L226 Difference]: Without dead ends: 174 [2020-12-01 15:13:32,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-12-01 15:13:32,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-12-01 15:13:32,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 142. [2020-12-01 15:13:32,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-01 15:13:32,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 186 transitions. [2020-12-01 15:13:32,465 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 186 transitions. Word has length 25 [2020-12-01 15:13:32,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:13:32,465 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 186 transitions. [2020-12-01 15:13:32,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:13:32,465 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 186 transitions. [2020-12-01 15:13:32,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 15:13:32,467 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:13:32,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:13:32,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-01 15:13:32,683 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:13:32,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:13:32,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1179255384, now seen corresponding path program 1 times [2020-12-01 15:13:32,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:13:32,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980658796] [2020-12-01 15:13:32,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-01 15:13:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:13:32,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 15:13:32,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:13:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:32,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:13:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:13:32,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980658796] [2020-12-01 15:13:32,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:13:32,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2020-12-01 15:13:32,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674096225] [2020-12-01 15:13:32,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:13:32,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:13:32,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:13:32,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:13:32,838 INFO L87 Difference]: Start difference. First operand 142 states and 186 transitions. Second operand 6 states. [2020-12-01 15:13:32,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:13:32,969 INFO L93 Difference]: Finished difference Result 159 states and 206 transitions. [2020-12-01 15:13:32,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:13:32,969 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-12-01 15:13:32,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:13:32,970 INFO L225 Difference]: With dead ends: 159 [2020-12-01 15:13:32,971 INFO L226 Difference]: Without dead ends: 140 [2020-12-01 15:13:32,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:13:32,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-01 15:13:32,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 130. [2020-12-01 15:13:32,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-01 15:13:32,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 170 transitions. [2020-12-01 15:13:32,995 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 170 transitions. Word has length 25 [2020-12-01 15:13:32,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:13:32,996 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 170 transitions. [2020-12-01 15:13:32,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:13:33,004 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 170 transitions. [2020-12-01 15:13:33,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 15:13:33,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:13:33,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:13:33,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-01 15:13:33,227 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:13:33,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:13:33,227 INFO L82 PathProgramCache]: Analyzing trace with hash -390784430, now seen corresponding path program 1 times [2020-12-01 15:13:33,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:13:33,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894575745] [2020-12-01 15:13:33,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-01 15:13:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:13:33,286 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:13:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:13:33,333 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:13:33,380 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-01 15:13:33,381 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:13:33,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-01 15:13:33,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:13:33 BoogieIcfgContainer [2020-12-01 15:13:33,637 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:13:33,638 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:13:33,638 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:13:33,639 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:13:33,640 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:13:26" (3/4) ... [2020-12-01 15:13:33,642 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 15:13:33,730 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e1c34a5f-a2b0-4bdc-ba94-f5255ad5f657/bin/uautomizer/witness.graphml [2020-12-01 15:13:33,731 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:13:33,732 INFO L168 Benchmark]: Toolchain (without parser) took 8823.21 ms. Allocated memory was 58.7 MB in the beginning and 113.2 MB in the end (delta: 54.5 MB). Free memory was 39.7 MB in the beginning and 73.1 MB in the end (delta: -33.5 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:13:33,733 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 58.7 MB. Free memory is still 41.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:13:33,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 423.36 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 42.0 MB in the end (delta: -2.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:13:33,737 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.57 ms. Allocated memory is still 58.7 MB. Free memory was 42.0 MB in the beginning and 39.8 MB in the end (delta: 2.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:13:33,741 INFO L168 Benchmark]: Boogie Preprocessor took 39.99 ms. Allocated memory is still 58.7 MB. Free memory was 39.8 MB in the beginning and 37.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:13:33,741 INFO L168 Benchmark]: RCFGBuilder took 747.34 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 37.9 MB in the beginning and 41.8 MB in the end (delta: -3.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:13:33,742 INFO L168 Benchmark]: TraceAbstraction took 7460.32 ms. Allocated memory was 77.6 MB in the beginning and 113.2 MB in the end (delta: 35.7 MB). Free memory was 41.4 MB in the beginning and 76.3 MB in the end (delta: -34.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:13:33,742 INFO L168 Benchmark]: Witness Printer took 92.59 ms. Allocated memory is still 113.2 MB. Free memory was 76.3 MB in the beginning and 73.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:13:33,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 58.7 MB. Free memory is still 41.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 423.36 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 42.0 MB in the end (delta: -2.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.57 ms. Allocated memory is still 58.7 MB. Free memory was 42.0 MB in the beginning and 39.8 MB in the end (delta: 2.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.99 ms. Allocated memory is still 58.7 MB. Free memory was 39.8 MB in the beginning and 37.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 747.34 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 37.9 MB in the beginning and 41.8 MB in the end (delta: -3.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7460.32 ms. Allocated memory was 77.6 MB in the beginning and 113.2 MB in the end (delta: 35.7 MB). Free memory was 41.4 MB in the beginning and 76.3 MB in the end (delta: -34.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. * Witness Printer took 92.59 ms. Allocated memory is still 113.2 MB. Free memory was 76.3 MB in the beginning and 73.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add1 ; [L225] unsigned int r_add2 ; [L226] unsigned int zero ; [L227] int tmp ; [L228] int tmp___0 ; [L229] int __retres14 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L233] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L234] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L235] b = base2flt(mb, eb) [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND FALSE !(!(cond)) [L107] delta = ea - eb [L8] COND TRUE !(cond) [L3] __assert_fail("0", "soft_float_4-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 93 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 944 SDtfs, 1516 SDslu, 4241 SDs, 0 SdLazy, 821 SolverSat, 127 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 397 GetRequests, 295 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 531 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 328 ConstructedInterpolants, 0 QuantifiedInterpolants, 13170 SizeOfPredicates, 44 NumberOfNonLiveVariables, 589 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...