./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/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 f4f20531c98faa0af8884f2ddaf47888911b3a46 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/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 f4f20531c98faa0af8884f2ddaf47888911b3a46 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-a4ecdab [2020-11-30 01:13:32,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:13:32,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:13:32,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:13:32,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:13:32,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:13:32,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:13:32,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:13:32,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:13:32,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:13:32,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:13:32,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:13:32,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:13:32,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:13:32,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:13:32,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:13:32,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:13:32,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:13:32,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:13:32,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:13:32,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:13:32,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:13:32,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:13:32,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:13:32,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:13:32,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:13:32,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:13:32,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:13:32,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:13:32,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:13:32,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:13:32,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:13:32,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:13:32,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:13:32,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:13:32,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:13:32,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:13:32,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:13:32,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:13:32,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:13:32,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:13:32,126 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:13:32,157 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:13:32,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:13:32,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:13:32,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:13:32,161 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:13:32,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:13:32,162 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:13:32,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:13:32,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:13:32,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:13:32,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:13:32,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:13:32,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:13:32,168 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:13:32,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:13:32,169 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:13:32,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:13:32,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:13:32,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:13:32,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:13:32,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:13:32,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:13:32,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:13:32,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:13:32,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:13:32,173 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:13:32,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:13:32,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:13:32,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:13:32,174 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_1248a9e7-9e60-44a3-973f-deaa1a57c71e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f20531c98faa0af8884f2ddaf47888911b3a46 [2020-11-30 01:13:32,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:13:32,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:13:32,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:13:32,535 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:13:32,538 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:13:32,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-11-30 01:13:32,653 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/data/13c0bc762/d99fa5bccc9a4b58bec6f8539bee9b30/FLAG035e32897 [2020-11-30 01:13:33,301 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:13:33,302 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-11-30 01:13:33,313 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/data/13c0bc762/d99fa5bccc9a4b58bec6f8539bee9b30/FLAG035e32897 [2020-11-30 01:13:33,632 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/data/13c0bc762/d99fa5bccc9a4b58bec6f8539bee9b30 [2020-11-30 01:13:33,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:13:33,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:13:33,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:13:33,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:13:33,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:13:33,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:13:33" (1/1) ... [2020-11-30 01:13:33,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a65cdcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:33, skipping insertion in model container [2020-11-30 01:13:33,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:13:33" (1/1) ... [2020-11-30 01:13:33,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:13:33,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:13:34,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:13:34,045 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:13:34,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:13:34,138 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:13:34,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:34 WrapperNode [2020-11-30 01:13:34,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:13:34,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:13:34,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:13:34,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:13:34,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:34" (1/1) ... [2020-11-30 01:13:34,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:34" (1/1) ... [2020-11-30 01:13:34,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:13:34,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:13:34,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:13:34,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:13:34,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:34" (1/1) ... [2020-11-30 01:13:34,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:34" (1/1) ... [2020-11-30 01:13:34,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:34" (1/1) ... [2020-11-30 01:13:34,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:34" (1/1) ... [2020-11-30 01:13:34,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:34" (1/1) ... [2020-11-30 01:13:34,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:34" (1/1) ... [2020-11-30 01:13:34,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:34" (1/1) ... [2020-11-30 01:13:34,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:13:34,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:13:34,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:13:34,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:13:34,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/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 [2020-11-30 01:13:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:13:34,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:13:34,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:13:34,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:13:35,317 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:13:35,318 INFO L298 CfgBuilder]: Removed 42 assume(true) statements. [2020-11-30 01:13:35,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:35 BoogieIcfgContainer [2020-11-30 01:13:35,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:13:35,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:13:35,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:13:35,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:13:35,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:13:33" (1/3) ... [2020-11-30 01:13:35,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47633398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:13:35, skipping insertion in model container [2020-11-30 01:13:35,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:34" (2/3) ... [2020-11-30 01:13:35,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47633398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:13:35, skipping insertion in model container [2020-11-30 01:13:35,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:35" (3/3) ... [2020-11-30 01:13:35,332 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-11-30 01:13:35,346 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:13:35,352 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 01:13:35,368 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 01:13:35,400 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:13:35,400 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:13:35,400 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:13:35,400 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:13:35,400 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:13:35,400 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:13:35,401 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:13:35,401 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:13:35,420 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2020-11-30 01:13:35,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:13:35,427 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:35,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:35,429 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:35,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:35,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1626643796, now seen corresponding path program 1 times [2020-11-30 01:13:35,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:35,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886474204] [2020-11-30 01:13:35,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:35,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:35,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886474204] [2020-11-30 01:13:35,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:35,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 01:13:35,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388626556] [2020-11-30 01:13:35,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:13:35,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:35,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:13:35,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:13:35,828 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 7 states. [2020-11-30 01:13:36,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:36,616 INFO L93 Difference]: Finished difference Result 464 states and 698 transitions. [2020-11-30 01:13:36,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 01:13:36,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-11-30 01:13:36,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:36,663 INFO L225 Difference]: With dead ends: 464 [2020-11-30 01:13:36,663 INFO L226 Difference]: Without dead ends: 348 [2020-11-30 01:13:36,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:13:36,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-11-30 01:13:36,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 142. [2020-11-30 01:13:36,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-30 01:13:36,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 206 transitions. [2020-11-30 01:13:36,798 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 206 transitions. Word has length 18 [2020-11-30 01:13:36,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:36,799 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 206 transitions. [2020-11-30 01:13:36,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:13:36,801 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 206 transitions. [2020-11-30 01:13:36,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:13:36,805 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:36,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:36,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:13:36,806 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:36,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:36,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1626703378, now seen corresponding path program 1 times [2020-11-30 01:13:36,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:36,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822874906] [2020-11-30 01:13:36,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:37,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:37,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822874906] [2020-11-30 01:13:37,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:37,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:13:37,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669040547] [2020-11-30 01:13:37,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:13:37,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:37,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:13:37,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:13:37,048 INFO L87 Difference]: Start difference. First operand 142 states and 206 transitions. Second operand 6 states. [2020-11-30 01:13:37,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:37,311 INFO L93 Difference]: Finished difference Result 299 states and 427 transitions. [2020-11-30 01:13:37,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:13:37,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-30 01:13:37,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:37,314 INFO L225 Difference]: With dead ends: 299 [2020-11-30 01:13:37,315 INFO L226 Difference]: Without dead ends: 215 [2020-11-30 01:13:37,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:13:37,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-11-30 01:13:37,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 202. [2020-11-30 01:13:37,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-30 01:13:37,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 289 transitions. [2020-11-30 01:13:37,340 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 289 transitions. Word has length 18 [2020-11-30 01:13:37,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:37,341 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 289 transitions. [2020-11-30 01:13:37,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:13:37,341 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 289 transitions. [2020-11-30 01:13:37,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:13:37,343 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:37,344 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] [2020-11-30 01:13:37,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:13:37,344 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:37,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:37,345 INFO L82 PathProgramCache]: Analyzing trace with hash 442130173, now seen corresponding path program 1 times [2020-11-30 01:13:37,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:37,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247843904] [2020-11-30 01:13:37,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:37,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247843904] [2020-11-30 01:13:37,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:37,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-30 01:13:37,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380097299] [2020-11-30 01:13:37,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:13:37,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:37,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:13:37,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:13:37,549 INFO L87 Difference]: Start difference. First operand 202 states and 289 transitions. Second operand 7 states. [2020-11-30 01:13:38,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:38,017 INFO L93 Difference]: Finished difference Result 347 states and 465 transitions. [2020-11-30 01:13:38,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 01:13:38,019 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-11-30 01:13:38,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:38,022 INFO L225 Difference]: With dead ends: 347 [2020-11-30 01:13:38,023 INFO L226 Difference]: Without dead ends: 299 [2020-11-30 01:13:38,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-11-30 01:13:38,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-11-30 01:13:38,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 191. [2020-11-30 01:13:38,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-11-30 01:13:38,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 271 transitions. [2020-11-30 01:13:38,059 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 271 transitions. Word has length 22 [2020-11-30 01:13:38,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:38,060 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 271 transitions. [2020-11-30 01:13:38,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:13:38,060 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 271 transitions. [2020-11-30 01:13:38,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 01:13:38,062 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:38,063 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, 1] [2020-11-30 01:13:38,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:13:38,063 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:38,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:38,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1963023460, now seen corresponding path program 1 times [2020-11-30 01:13:38,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:38,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824304068] [2020-11-30 01:13:38,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:38,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:38,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824304068] [2020-11-30 01:13:38,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:38,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:13:38,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998595592] [2020-11-30 01:13:38,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:13:38,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:38,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:13:38,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:13:38,121 INFO L87 Difference]: Start difference. First operand 191 states and 271 transitions. Second operand 3 states. [2020-11-30 01:13:38,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:38,176 INFO L93 Difference]: Finished difference Result 345 states and 487 transitions. [2020-11-30 01:13:38,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:13:38,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-30 01:13:38,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:38,180 INFO L225 Difference]: With dead ends: 345 [2020-11-30 01:13:38,181 INFO L226 Difference]: Without dead ends: 270 [2020-11-30 01:13:38,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:13:38,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-11-30 01:13:38,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 241. [2020-11-30 01:13:38,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-11-30 01:13:38,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 336 transitions. [2020-11-30 01:13:38,227 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 336 transitions. Word has length 26 [2020-11-30 01:13:38,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:38,228 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 336 transitions. [2020-11-30 01:13:38,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:13:38,228 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 336 transitions. [2020-11-30 01:13:38,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 01:13:38,239 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:38,239 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, 1] [2020-11-30 01:13:38,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:13:38,240 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:38,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:38,241 INFO L82 PathProgramCache]: Analyzing trace with hash -855546000, now seen corresponding path program 1 times [2020-11-30 01:13:38,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:38,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285656615] [2020-11-30 01:13:38,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:38,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:38,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285656615] [2020-11-30 01:13:38,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:38,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:13:38,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420046128] [2020-11-30 01:13:38,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:13:38,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:38,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:13:38,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:13:38,402 INFO L87 Difference]: Start difference. First operand 241 states and 336 transitions. Second operand 5 states. [2020-11-30 01:13:38,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:38,630 INFO L93 Difference]: Finished difference Result 608 states and 834 transitions. [2020-11-30 01:13:38,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:13:38,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-30 01:13:38,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:38,635 INFO L225 Difference]: With dead ends: 608 [2020-11-30 01:13:38,635 INFO L226 Difference]: Without dead ends: 443 [2020-11-30 01:13:38,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:13:38,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-11-30 01:13:38,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 298. [2020-11-30 01:13:38,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-30 01:13:38,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 413 transitions. [2020-11-30 01:13:38,667 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 413 transitions. Word has length 26 [2020-11-30 01:13:38,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:38,668 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 413 transitions. [2020-11-30 01:13:38,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:13:38,669 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 413 transitions. [2020-11-30 01:13:38,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 01:13:38,670 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:38,671 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, 1, 1, 1, 1, 1] [2020-11-30 01:13:38,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 01:13:38,671 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:38,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:38,673 INFO L82 PathProgramCache]: Analyzing trace with hash 397693116, now seen corresponding path program 1 times [2020-11-30 01:13:38,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:38,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998584047] [2020-11-30 01:13:38,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:38,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:38,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998584047] [2020-11-30 01:13:38,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:38,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:13:38,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310414891] [2020-11-30 01:13:38,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:13:38,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:38,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:13:38,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:13:38,755 INFO L87 Difference]: Start difference. First operand 298 states and 413 transitions. Second operand 4 states. [2020-11-30 01:13:38,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:38,820 INFO L93 Difference]: Finished difference Result 429 states and 595 transitions. [2020-11-30 01:13:38,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:13:38,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-11-30 01:13:38,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:38,824 INFO L225 Difference]: With dead ends: 429 [2020-11-30 01:13:38,825 INFO L226 Difference]: Without dead ends: 354 [2020-11-30 01:13:38,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:13:38,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-11-30 01:13:38,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 312. [2020-11-30 01:13:38,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-11-30 01:13:38,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 423 transitions. [2020-11-30 01:13:38,848 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 423 transitions. Word has length 30 [2020-11-30 01:13:38,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:38,849 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 423 transitions. [2020-11-30 01:13:38,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:13:38,850 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 423 transitions. [2020-11-30 01:13:38,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 01:13:38,851 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:38,852 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, 1, 1, 1, 1, 1] [2020-11-30 01:13:38,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 01:13:38,852 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:38,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:38,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1878814160, now seen corresponding path program 1 times [2020-11-30 01:13:38,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:38,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573401729] [2020-11-30 01:13:38,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:39,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:39,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573401729] [2020-11-30 01:13:39,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:39,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 01:13:39,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172097314] [2020-11-30 01:13:39,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:13:39,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:13:39,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:13:39,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:13:39,027 INFO L87 Difference]: Start difference. First operand 312 states and 423 transitions. Second operand 6 states. [2020-11-30 01:13:39,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:39,565 INFO L93 Difference]: Finished difference Result 813 states and 1106 transitions. [2020-11-30 01:13:39,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:13:39,566 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-11-30 01:13:39,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:39,575 INFO L225 Difference]: With dead ends: 813 [2020-11-30 01:13:39,575 INFO L226 Difference]: Without dead ends: 704 [2020-11-30 01:13:39,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:13:39,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-11-30 01:13:39,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 450. [2020-11-30 01:13:39,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-11-30 01:13:39,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 614 transitions. [2020-11-30 01:13:39,621 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 614 transitions. Word has length 30 [2020-11-30 01:13:39,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:39,623 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 614 transitions. [2020-11-30 01:13:39,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:13:39,624 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 614 transitions. [2020-11-30 01:13:39,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 01:13:39,625 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:39,625 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, 1, 1, 1, 1, 1] [2020-11-30 01:13:39,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 01:13:39,626 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:39,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:39,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1878873742, now seen corresponding path program 1 times [2020-11-30 01:13:39,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:13:39,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260313812] [2020-11-30 01:13:39,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:13:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:39,730 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:39,776 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:39,824 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:13:39,824 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:13:39,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 01:13:39,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:13:39 BoogieIcfgContainer [2020-11-30 01:13:39,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:13:39,902 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:13:39,902 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:13:39,903 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:13:39,903 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:35" (3/4) ... [2020-11-30 01:13:39,908 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:13:39,908 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:13:39,912 INFO L168 Benchmark]: Toolchain (without parser) took 6271.21 ms. Allocated memory was 83.9 MB in the beginning and 136.3 MB in the end (delta: 52.4 MB). Free memory was 54.1 MB in the beginning and 49.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 60.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:39,922 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 83.9 MB. Free memory is still 61.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:13:39,923 INFO L168 Benchmark]: CACSL2BoogieTranslator took 497.51 ms. Allocated memory is still 83.9 MB. Free memory was 53.9 MB in the beginning and 40.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:39,924 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.88 ms. Allocated memory is still 83.9 MB. Free memory was 40.9 MB in the beginning and 38.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:39,925 INFO L168 Benchmark]: Boogie Preprocessor took 90.41 ms. Allocated memory is still 83.9 MB. Free memory was 38.5 MB in the beginning and 61.5 MB in the end (delta: -23.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:39,926 INFO L168 Benchmark]: RCFGBuilder took 1011.35 ms. Allocated memory is still 83.9 MB. Free memory was 61.5 MB in the beginning and 53.2 MB in the end (delta: 8.3 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:39,930 INFO L168 Benchmark]: TraceAbstraction took 4578.81 ms. Allocated memory was 83.9 MB in the beginning and 136.3 MB in the end (delta: 52.4 MB). Free memory was 52.8 MB in the beginning and 49.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 55.9 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:39,931 INFO L168 Benchmark]: Witness Printer took 5.78 ms. Allocated memory is still 136.3 MB. Free memory is still 49.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:13:39,934 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 83.9 MB. Free memory is still 61.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 497.51 ms. Allocated memory is still 83.9 MB. Free memory was 53.9 MB in the beginning and 40.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.88 ms. Allocated memory is still 83.9 MB. Free memory was 40.9 MB in the beginning and 38.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 90.41 ms. Allocated memory is still 83.9 MB. Free memory was 38.5 MB in the beginning and 61.5 MB in the end (delta: -23.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1011.35 ms. Allocated memory is still 83.9 MB. Free memory was 61.5 MB in the beginning and 53.2 MB in the end (delta: 8.3 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4578.81 ms. Allocated memory was 83.9 MB in the beginning and 136.3 MB in the end (delta: 52.4 MB). Free memory was 52.8 MB in the beginning and 49.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 55.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.78 ms. Allocated memory is still 136.3 MB. Free memory is still 49.7 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_add ; [L225] unsigned int zero ; [L226] int sa ; [L227] int sb ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int tmp___1 ; [L231] int tmp___2 ; [L232] int tmp___3 ; [L233] int tmp___4 ; [L234] int tmp___5 ; [L235] int tmp___6 ; [L236] int tmp___7 ; [L237] int tmp___8 ; [L238] int tmp___9 ; [L239] int __retres23 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L243] 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); [L244] 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); [L245] b = base2flt(mb, eb) [L247] COND FALSE !(a < zero) [L250] COND TRUE a > zero [L251] tmp = 1 [L255] sa = tmp [L257] COND FALSE !(b < zero) [L260] COND TRUE b > zero [L261] tmp___0 = 1 [L265] sb = tmp___0 [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_1-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 102 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1043 SDtfs, 2629 SDslu, 3208 SDs, 0 SdLazy, 590 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=450occurred 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, 7 MinimizatonAttempts, 797 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 10347 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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-a4ecdab [2020-11-30 01:13:43,050 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-30 01:13:43,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:13:43,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:13:43,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:13:43,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:13:43,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:13:43,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:13:43,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:13:43,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:13:43,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:13:43,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:13:43,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:13:43,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:13:43,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:13:43,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:13:43,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:13:43,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:13:43,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:13:43,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:13:43,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:13:43,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:13:43,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:13:43,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:13:43,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:13:43,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:13:43,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:13:43,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:13:43,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:13:43,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:13:43,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:13:43,247 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 01:13:43,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:13:43,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:13:43,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:13:43,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:13:43,308 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:13:43,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:13:43,309 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:13:43,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:13:43,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:13:43,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:13:43,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:13:43,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:13:43,313 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:13:43,313 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:13:43,313 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:13:43,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:13:43,314 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:13:43,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:13:43,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:13:43,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:13:43,316 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:13:43,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:13:43,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:13:43,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:13:43,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:13:43,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:13:43,318 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 01:13:43,318 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:13:43,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:13:43,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:13:43,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:13:43,320 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_1248a9e7-9e60-44a3-973f-deaa1a57c71e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f20531c98faa0af8884f2ddaf47888911b3a46 [2020-11-30 01:13:43,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:13:43,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:13:43,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:13:43,940 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:13:43,941 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:13:43,942 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-11-30 01:13:44,041 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/data/b6e54b279/d74fdc0c885849f08c088bc4126f5b87/FLAGfbf9ec416 [2020-11-30 01:13:44,755 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:13:44,756 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-11-30 01:13:44,766 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/data/b6e54b279/d74fdc0c885849f08c088bc4126f5b87/FLAGfbf9ec416 [2020-11-30 01:13:45,029 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/data/b6e54b279/d74fdc0c885849f08c088bc4126f5b87 [2020-11-30 01:13:45,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:13:45,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:13:45,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:13:45,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:13:45,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:13:45,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:13:45" (1/1) ... [2020-11-30 01:13:45,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e471aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:45, skipping insertion in model container [2020-11-30 01:13:45,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:13:45" (1/1) ... [2020-11-30 01:13:45,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:13:45,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:13:45,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:13:45,400 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:13:45,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:13:45,601 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:13:45,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:45 WrapperNode [2020-11-30 01:13:45,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:13:45,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:13:45,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:13:45,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:13:45,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:45" (1/1) ... [2020-11-30 01:13:45,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:45" (1/1) ... [2020-11-30 01:13:45,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:13:45,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:13:45,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:13:45,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:13:45,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:45" (1/1) ... [2020-11-30 01:13:45,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:45" (1/1) ... [2020-11-30 01:13:45,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:45" (1/1) ... [2020-11-30 01:13:45,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:45" (1/1) ... [2020-11-30 01:13:45,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:45" (1/1) ... [2020-11-30 01:13:45,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:45" (1/1) ... [2020-11-30 01:13:45,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:45" (1/1) ... [2020-11-30 01:13:45,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:13:45,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:13:45,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:13:45,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:13:45,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/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 [2020-11-30 01:13:45,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:13:45,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:13:45,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:13:45,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:13:47,051 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:13:47,051 INFO L298 CfgBuilder]: Removed 42 assume(true) statements. [2020-11-30 01:13:47,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:47 BoogieIcfgContainer [2020-11-30 01:13:47,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:13:47,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:13:47,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:13:47,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:13:47,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:13:45" (1/3) ... [2020-11-30 01:13:47,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae7d101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:13:47, skipping insertion in model container [2020-11-30 01:13:47,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:13:45" (2/3) ... [2020-11-30 01:13:47,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae7d101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:13:47, skipping insertion in model container [2020-11-30 01:13:47,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:47" (3/3) ... [2020-11-30 01:13:47,078 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-11-30 01:13:47,109 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:13:47,115 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 01:13:47,148 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 01:13:47,195 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:13:47,208 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:13:47,209 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:13:47,209 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:13:47,210 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:13:47,210 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:13:47,210 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:13:47,210 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:13:47,249 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2020-11-30 01:13:47,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:13:47,255 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:47,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:47,256 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:47,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:47,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1626643796, now seen corresponding path program 1 times [2020-11-30 01:13:47,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:13:47,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766736046] [2020-11-30 01:13:47,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/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 [2020-11-30 01:13:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:47,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:13:47,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:47,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:47,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:13:47,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:47,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766736046] [2020-11-30 01:13:47,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:47,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-30 01:13:47,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111066378] [2020-11-30 01:13:47,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:13:47,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:13:47,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:13:47,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:13:47,638 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 5 states. [2020-11-30 01:13:48,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:48,119 INFO L93 Difference]: Finished difference Result 403 states and 613 transitions. [2020-11-30 01:13:48,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:13:48,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-30 01:13:48,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:48,154 INFO L225 Difference]: With dead ends: 403 [2020-11-30 01:13:48,154 INFO L226 Difference]: Without dead ends: 295 [2020-11-30 01:13:48,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:13:48,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-11-30 01:13:48,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 120. [2020-11-30 01:13:48,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-30 01:13:48,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 172 transitions. [2020-11-30 01:13:48,278 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 172 transitions. Word has length 18 [2020-11-30 01:13:48,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:48,278 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 172 transitions. [2020-11-30 01:13:48,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:13:48,279 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 172 transitions. [2020-11-30 01:13:48,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:13:48,282 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:48,282 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] [2020-11-30 01:13:48,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:13:48,496 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:48,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:48,497 INFO L82 PathProgramCache]: Analyzing trace with hash -908455500, now seen corresponding path program 1 times [2020-11-30 01:13:48,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:13:48,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876554507] [2020-11-30 01:13:48,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/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 [2020-11-30 01:13:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:48,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:13:48,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:48,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:13:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:48,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876554507] [2020-11-30 01:13:48,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:48,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-30 01:13:48,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69195647] [2020-11-30 01:13:48,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:13:48,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:13:48,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:13:48,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:13:48,690 INFO L87 Difference]: Start difference. First operand 120 states and 172 transitions. Second operand 5 states. [2020-11-30 01:13:49,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:49,019 INFO L93 Difference]: Finished difference Result 394 states and 543 transitions. [2020-11-30 01:13:49,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:13:49,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-30 01:13:49,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:49,022 INFO L225 Difference]: With dead ends: 394 [2020-11-30 01:13:49,023 INFO L226 Difference]: Without dead ends: 337 [2020-11-30 01:13:49,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:13:49,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-11-30 01:13:49,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 186. [2020-11-30 01:13:49,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-11-30 01:13:49,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 269 transitions. [2020-11-30 01:13:49,049 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 269 transitions. Word has length 22 [2020-11-30 01:13:49,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:49,049 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 269 transitions. [2020-11-30 01:13:49,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:13:49,050 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 269 transitions. [2020-11-30 01:13:49,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:13:49,052 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:49,052 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] [2020-11-30 01:13:49,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 01:13:49,266 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:49,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:49,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1301482510, now seen corresponding path program 1 times [2020-11-30 01:13:49,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:13:49,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673834505] [2020-11-30 01:13:49,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/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 [2020-11-30 01:13:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:49,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:13:49,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:49,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:49,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:13:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:49,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673834505] [2020-11-30 01:13:49,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:49,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-30 01:13:49,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792238925] [2020-11-30 01:13:49,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:13:49,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:13:49,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:13:49,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:13:49,431 INFO L87 Difference]: Start difference. First operand 186 states and 269 transitions. Second operand 5 states. [2020-11-30 01:13:49,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:49,705 INFO L93 Difference]: Finished difference Result 378 states and 535 transitions. [2020-11-30 01:13:49,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:13:49,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-30 01:13:49,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:49,709 INFO L225 Difference]: With dead ends: 378 [2020-11-30 01:13:49,709 INFO L226 Difference]: Without dead ends: 295 [2020-11-30 01:13:49,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:13:49,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-11-30 01:13:49,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 278. [2020-11-30 01:13:49,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-11-30 01:13:49,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 401 transitions. [2020-11-30 01:13:49,735 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 401 transitions. Word has length 22 [2020-11-30 01:13:49,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:49,736 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 401 transitions. [2020-11-30 01:13:49,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:13:49,736 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 401 transitions. [2020-11-30 01:13:49,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:13:49,738 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:49,739 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] [2020-11-30 01:13:49,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 01:13:49,957 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:49,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:49,957 INFO L82 PathProgramCache]: Analyzing trace with hash 473524852, now seen corresponding path program 1 times [2020-11-30 01:13:49,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:13:49,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479158185] [2020-11-30 01:13:49,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/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 [2020-11-30 01:13:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:50,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 01:13:50,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:50,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:50,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:13:50,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:50,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479158185] [2020-11-30 01:13:50,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:50,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-11-30 01:13:50,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061240679] [2020-11-30 01:13:50,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:13:50,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:13:50,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:13:50,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:13:50,166 INFO L87 Difference]: Start difference. First operand 278 states and 401 transitions. Second operand 6 states. [2020-11-30 01:13:50,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:50,413 INFO L93 Difference]: Finished difference Result 395 states and 553 transitions. [2020-11-30 01:13:50,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:13:50,414 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-30 01:13:50,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:50,417 INFO L225 Difference]: With dead ends: 395 [2020-11-30 01:13:50,417 INFO L226 Difference]: Without dead ends: 318 [2020-11-30 01:13:50,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:13:50,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-11-30 01:13:50,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 258. [2020-11-30 01:13:50,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-11-30 01:13:50,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 365 transitions. [2020-11-30 01:13:50,474 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 365 transitions. Word has length 22 [2020-11-30 01:13:50,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:50,475 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 365 transitions. [2020-11-30 01:13:50,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:13:50,476 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 365 transitions. [2020-11-30 01:13:50,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 01:13:50,485 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:50,486 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, 1] [2020-11-30 01:13:50,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 01:13:50,702 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:50,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:50,703 INFO L82 PathProgramCache]: Analyzing trace with hash 177561437, now seen corresponding path program 1 times [2020-11-30 01:13:50,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:13:50,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520037382] [2020-11-30 01:13:50,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/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 [2020-11-30 01:13:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:50,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:13:50,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:50,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:50,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:13:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:50,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520037382] [2020-11-30 01:13:50,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:50,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-11-30 01:13:50,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766803928] [2020-11-30 01:13:50,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:13:50,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:13:50,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:13:50,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:13:50,901 INFO L87 Difference]: Start difference. First operand 258 states and 365 transitions. Second operand 7 states. [2020-11-30 01:13:51,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:51,435 INFO L93 Difference]: Finished difference Result 402 states and 541 transitions. [2020-11-30 01:13:51,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 01:13:51,436 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-11-30 01:13:51,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:51,438 INFO L225 Difference]: With dead ends: 402 [2020-11-30 01:13:51,439 INFO L226 Difference]: Without dead ends: 354 [2020-11-30 01:13:51,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-11-30 01:13:51,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-11-30 01:13:51,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 248. [2020-11-30 01:13:51,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-11-30 01:13:51,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 348 transitions. [2020-11-30 01:13:51,459 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 348 transitions. Word has length 26 [2020-11-30 01:13:51,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:51,460 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 348 transitions. [2020-11-30 01:13:51,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:13:51,464 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 348 transitions. [2020-11-30 01:13:51,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 01:13:51,465 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:51,465 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, 1, 1, 1, 1, 1] [2020-11-30 01:13:51,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 01:13:51,686 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:51,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:51,686 INFO L82 PathProgramCache]: Analyzing trace with hash 397693116, now seen corresponding path program 1 times [2020-11-30 01:13:51,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:13:51,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241945131] [2020-11-30 01:13:51,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/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 [2020-11-30 01:13:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:51,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:13:51,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:51,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:51,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:13:51,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:51,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241945131] [2020-11-30 01:13:51,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:51,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:13:51,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847362005] [2020-11-30 01:13:51,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:13:51,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:13:51,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:13:51,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:13:51,797 INFO L87 Difference]: Start difference. First operand 248 states and 348 transitions. Second operand 6 states. [2020-11-30 01:13:51,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:51,881 INFO L93 Difference]: Finished difference Result 456 states and 635 transitions. [2020-11-30 01:13:51,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:13:51,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-11-30 01:13:51,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:51,884 INFO L225 Difference]: With dead ends: 456 [2020-11-30 01:13:51,885 INFO L226 Difference]: Without dead ends: 381 [2020-11-30 01:13:51,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:13:51,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-11-30 01:13:51,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 310. [2020-11-30 01:13:51,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-11-30 01:13:51,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 423 transitions. [2020-11-30 01:13:51,904 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 423 transitions. Word has length 30 [2020-11-30 01:13:51,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:51,904 INFO L481 AbstractCegarLoop]: Abstraction has 310 states and 423 transitions. [2020-11-30 01:13:51,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:13:51,905 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 423 transitions. [2020-11-30 01:13:51,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 01:13:51,906 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:51,906 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, 1, 1, 1, 1, 1] [2020-11-30 01:13:52,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 01:13:52,126 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:52,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:52,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1878814160, now seen corresponding path program 1 times [2020-11-30 01:13:52,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:13:52,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497901031] [2020-11-30 01:13:52,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/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 [2020-11-30 01:13:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:52,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 01:13:52,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:52,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:13:52,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:52,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497901031] [2020-11-30 01:13:52,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:52,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2020-11-30 01:13:52,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514101178] [2020-11-30 01:13:52,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:13:52,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:13:52,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:13:52,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:13:52,342 INFO L87 Difference]: Start difference. First operand 310 states and 423 transitions. Second operand 8 states. [2020-11-30 01:13:53,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:53,388 INFO L93 Difference]: Finished difference Result 912 states and 1264 transitions. [2020-11-30 01:13:53,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-30 01:13:53,389 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-11-30 01:13:53,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:53,393 INFO L225 Difference]: With dead ends: 912 [2020-11-30 01:13:53,394 INFO L226 Difference]: Without dead ends: 805 [2020-11-30 01:13:53,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-11-30 01:13:53,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2020-11-30 01:13:53,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 446. [2020-11-30 01:13:53,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-11-30 01:13:53,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 608 transitions. [2020-11-30 01:13:53,453 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 608 transitions. Word has length 30 [2020-11-30 01:13:53,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:53,454 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 608 transitions. [2020-11-30 01:13:53,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:13:53,454 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 608 transitions. [2020-11-30 01:13:53,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 01:13:53,456 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:53,457 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, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:53,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 01:13:53,677 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:53,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:53,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1434134121, now seen corresponding path program 1 times [2020-11-30 01:13:53,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:13:53,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708040424] [2020-11-30 01:13:53,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/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 [2020-11-30 01:13:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:53,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 01:13:53,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:53,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:53,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:13:53,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:53,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708040424] [2020-11-30 01:13:53,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:53,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2020-11-30 01:13:53,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437527989] [2020-11-30 01:13:53,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 01:13:53,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:13:53,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 01:13:53,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:13:53,985 INFO L87 Difference]: Start difference. First operand 446 states and 608 transitions. Second operand 13 states. [2020-11-30 01:13:55,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:55,472 INFO L93 Difference]: Finished difference Result 746 states and 1004 transitions. [2020-11-30 01:13:55,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-30 01:13:55,475 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-11-30 01:13:55,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:55,479 INFO L225 Difference]: With dead ends: 746 [2020-11-30 01:13:55,479 INFO L226 Difference]: Without dead ends: 705 [2020-11-30 01:13:55,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2020-11-30 01:13:55,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-11-30 01:13:55,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 444. [2020-11-30 01:13:55,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-11-30 01:13:55,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 606 transitions. [2020-11-30 01:13:55,522 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 606 transitions. Word has length 31 [2020-11-30 01:13:55,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:55,522 INFO L481 AbstractCegarLoop]: Abstraction has 444 states and 606 transitions. [2020-11-30 01:13:55,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 01:13:55,523 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 606 transitions. [2020-11-30 01:13:55,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 01:13:55,528 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:55,528 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, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:55,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 01:13:55,749 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:55,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:55,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1376875819, now seen corresponding path program 1 times [2020-11-30 01:13:55,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:13:55,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121670271] [2020-11-30 01:13:55,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/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 [2020-11-30 01:13:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:55,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 01:13:55,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:55,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:13:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:55,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121670271] [2020-11-30 01:13:55,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:55,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:13:55,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633361258] [2020-11-30 01:13:55,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:13:55,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:13:55,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:13:55,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:13:55,867 INFO L87 Difference]: Start difference. First operand 444 states and 606 transitions. Second operand 6 states. [2020-11-30 01:13:55,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:55,988 INFO L93 Difference]: Finished difference Result 501 states and 681 transitions. [2020-11-30 01:13:55,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:13:55,994 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-11-30 01:13:55,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:55,997 INFO L225 Difference]: With dead ends: 501 [2020-11-30 01:13:55,997 INFO L226 Difference]: Without dead ends: 496 [2020-11-30 01:13:55,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:13:55,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-11-30 01:13:56,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 444. [2020-11-30 01:13:56,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-11-30 01:13:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 601 transitions. [2020-11-30 01:13:56,037 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 601 transitions. Word has length 31 [2020-11-30 01:13:56,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:56,040 INFO L481 AbstractCegarLoop]: Abstraction has 444 states and 601 transitions. [2020-11-30 01:13:56,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:13:56,040 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 601 transitions. [2020-11-30 01:13:56,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-30 01:13:56,049 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:56,049 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:56,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-30 01:13:56,265 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:56,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:56,266 INFO L82 PathProgramCache]: Analyzing trace with hash 6505427, now seen corresponding path program 1 times [2020-11-30 01:13:56,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:13:56,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147085323] [2020-11-30 01:13:56,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-30 01:13:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:13:56,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:13:56,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:13:56,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:56,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:13:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:13:56,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2147085323] [2020-11-30 01:13:56,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:13:56,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:13:56,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893545785] [2020-11-30 01:13:56,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:13:56,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:13:56,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:13:56,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:13:56,410 INFO L87 Difference]: Start difference. First operand 444 states and 601 transitions. Second operand 6 states. [2020-11-30 01:13:56,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:13:56,524 INFO L93 Difference]: Finished difference Result 901 states and 1199 transitions. [2020-11-30 01:13:56,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:13:56,525 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-11-30 01:13:56,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:13:56,530 INFO L225 Difference]: With dead ends: 901 [2020-11-30 01:13:56,531 INFO L226 Difference]: Without dead ends: 842 [2020-11-30 01:13:56,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:13:56,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2020-11-30 01:13:56,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 476. [2020-11-30 01:13:56,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-11-30 01:13:56,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 646 transitions. [2020-11-30 01:13:56,570 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 646 transitions. Word has length 32 [2020-11-30 01:13:56,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:13:56,570 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 646 transitions. [2020-11-30 01:13:56,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:13:56,571 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 646 transitions. [2020-11-30 01:13:56,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-30 01:13:56,572 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:13:56,573 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:13:56,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-30 01:13:56,789 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:13:56,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:13:56,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1711625809, now seen corresponding path program 1 times [2020-11-30 01:13:56,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:13:56,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77936991] [2020-11-30 01:13:56,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-11-30 01:13:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:56,861 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:13:56,933 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:13:57,018 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 01:13:57,018 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:13:57,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-30 01:13:57,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:13:57 BoogieIcfgContainer [2020-11-30 01:13:57,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:13:57,281 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:13:57,281 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:13:57,281 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:13:57,282 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:13:47" (3/4) ... [2020-11-30 01:13:57,284 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:13:57,388 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1248a9e7-9e60-44a3-973f-deaa1a57c71e/bin/uautomizer/witness.graphml [2020-11-30 01:13:57,388 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:13:57,390 INFO L168 Benchmark]: Toolchain (without parser) took 12353.69 ms. Allocated memory was 71.3 MB in the beginning and 146.8 MB in the end (delta: 75.5 MB). Free memory was 54.3 MB in the beginning and 115.2 MB in the end (delta: -60.9 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:57,391 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 71.3 MB. Free memory is still 54.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:13:57,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 564.76 ms. Allocated memory is still 71.3 MB. Free memory was 54.1 MB in the beginning and 53.1 MB in the end (delta: 958.9 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:57,392 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.97 ms. Allocated memory is still 71.3 MB. Free memory was 53.1 MB in the beginning and 50.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:57,393 INFO L168 Benchmark]: Boogie Preprocessor took 51.99 ms. Allocated memory is still 71.3 MB. Free memory was 50.9 MB in the beginning and 49.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:57,393 INFO L168 Benchmark]: RCFGBuilder took 1298.43 ms. Allocated memory was 71.3 MB in the beginning and 96.5 MB in the end (delta: 25.2 MB). Free memory was 48.7 MB in the beginning and 62.6 MB in the end (delta: -13.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:57,394 INFO L168 Benchmark]: TraceAbstraction took 10210.82 ms. Allocated memory was 96.5 MB in the beginning and 146.8 MB in the end (delta: 50.3 MB). Free memory was 62.1 MB in the beginning and 119.4 MB in the end (delta: -57.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:57,394 INFO L168 Benchmark]: Witness Printer took 107.40 ms. Allocated memory is still 146.8 MB. Free memory was 119.4 MB in the beginning and 115.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:13:57,397 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 71.3 MB. Free memory is still 54.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 564.76 ms. Allocated memory is still 71.3 MB. Free memory was 54.1 MB in the beginning and 53.1 MB in the end (delta: 958.9 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 98.97 ms. Allocated memory is still 71.3 MB. Free memory was 53.1 MB in the beginning and 50.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.99 ms. Allocated memory is still 71.3 MB. Free memory was 50.9 MB in the beginning and 49.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1298.43 ms. Allocated memory was 71.3 MB in the beginning and 96.5 MB in the end (delta: 25.2 MB). Free memory was 48.7 MB in the beginning and 62.6 MB in the end (delta: -13.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10210.82 ms. Allocated memory was 96.5 MB in the beginning and 146.8 MB in the end (delta: 50.3 MB). Free memory was 62.1 MB in the beginning and 119.4 MB in the end (delta: -57.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 16.1 GB. * Witness Printer took 107.40 ms. Allocated memory is still 146.8 MB. Free memory was 119.4 MB in the beginning and 115.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 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_add ; [L225] unsigned int zero ; [L226] int sa ; [L227] int sb ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int tmp___1 ; [L231] int tmp___2 ; [L232] int tmp___3 ; [L233] int tmp___4 ; [L234] int tmp___5 ; [L235] int tmp___6 ; [L236] int tmp___7 ; [L237] int tmp___8 ; [L238] int tmp___9 ; [L239] int __retres23 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L243] 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); [L244] 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); [L245] b = base2flt(mb, eb) [L247] COND FALSE !(a < zero) [L250] COND TRUE a > zero [L251] tmp = 1 [L255] sa = tmp [L257] COND FALSE !(b < zero) [L260] COND TRUE b > zero [L261] tmp___0 = 1 [L265] sb = tmp___0 [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_1-3a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 102 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.0s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1434 SDtfs, 3934 SDslu, 5661 SDs, 0 SdLazy, 1202 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 571 GetRequests, 465 SyntacticMatches, 7 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=476occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 1618 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 296 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 508 ConstructedInterpolants, 0 QuantifiedInterpolants, 26009 SizeOfPredicates, 41 NumberOfNonLiveVariables, 764 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 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...