./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_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan --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 Taipan --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_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan --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 Taipan --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 [2020-11-28 07:27:07,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:27:07,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:27:07,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:27:07,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:27:07,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:27:07,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:27:07,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:27:07,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:27:07,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:27:07,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:27:07,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:27:07,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:27:07,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:27:07,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:27:07,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:27:07,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:27:07,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:27:07,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:27:07,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:27:07,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:27:07,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:27:07,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:27:07,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:27:07,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:27:07,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:27:07,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:27:07,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:27:07,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:27:07,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:27:07,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:27:07,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:27:07,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:27:07,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:27:07,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:27:07,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:27:07,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:27:07,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:27:07,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:27:07,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:27:07,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:27:07,158 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:27:07,184 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:27:07,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:27:07,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:27:07,185 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:27:07,185 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:27:07,186 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:27:07,186 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:27:07,186 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:27:07,186 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:27:07,187 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:27:07,187 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:27:07,187 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:27:07,188 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:27:07,188 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:27:07,188 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:27:07,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:27:07,189 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:27:07,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:27:07,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:27:07,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:27:07,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:27:07,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:27:07,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:27:07,191 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:27:07,191 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:27:07,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:27:07,192 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:27:07,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:27:07,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:27:07,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:27:07,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:27:07,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:27:07,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:27:07,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:27:07,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:27:07,194 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:27:07,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:27:07,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:27:07,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:27:07,195 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:27:07,195 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f20531c98faa0af8884f2ddaf47888911b3a46 [2020-11-28 07:27:07,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:27:07,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:27:07,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:27:07,527 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:27:07,528 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:27:07,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-11-28 07:27:07,602 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/data/75ca1c7a5/b756cae268804d2a9d2df1a6a7c18920/FLAGea3b124a8 [2020-11-28 07:27:08,174 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:27:08,175 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-11-28 07:27:08,192 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/data/75ca1c7a5/b756cae268804d2a9d2df1a6a7c18920/FLAGea3b124a8 [2020-11-28 07:27:08,509 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/data/75ca1c7a5/b756cae268804d2a9d2df1a6a7c18920 [2020-11-28 07:27:08,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:27:08,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:27:08,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:27:08,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:27:08,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:27:08,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:27:08" (1/1) ... [2020-11-28 07:27:08,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da20d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:08, skipping insertion in model container [2020-11-28 07:27:08,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:27:08" (1/1) ... [2020-11-28 07:27:08,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:27:08,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:27:08,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:27:08,897 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:27:08,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:27:08,955 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:27:08,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:08 WrapperNode [2020-11-28 07:27:08,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:27:08,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:27:08,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:27:08,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:27:08,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:08" (1/1) ... [2020-11-28 07:27:08,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:08" (1/1) ... [2020-11-28 07:27:09,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:27:09,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:27:09,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:27:09,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:27:09,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:08" (1/1) ... [2020-11-28 07:27:09,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:08" (1/1) ... [2020-11-28 07:27:09,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:08" (1/1) ... [2020-11-28 07:27:09,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:08" (1/1) ... [2020-11-28 07:27:09,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:08" (1/1) ... [2020-11-28 07:27:09,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:08" (1/1) ... [2020-11-28 07:27:09,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:08" (1/1) ... [2020-11-28 07:27:09,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:27:09,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:27:09,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:27:09,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:27:09,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/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 [2020-11-28 07:27:09,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:27:09,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:27:09,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:27:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:27:10,528 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:27:10,528 INFO L298 CfgBuilder]: Removed 42 assume(true) statements. [2020-11-28 07:27:10,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:10 BoogieIcfgContainer [2020-11-28 07:27:10,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:27:10,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:27:10,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:27:10,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:27:10,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:27:08" (1/3) ... [2020-11-28 07:27:10,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785b8239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:27:10, skipping insertion in model container [2020-11-28 07:27:10,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:08" (2/3) ... [2020-11-28 07:27:10,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785b8239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:27:10, skipping insertion in model container [2020-11-28 07:27:10,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:10" (3/3) ... [2020-11-28 07:27:10,541 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-11-28 07:27:10,552 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:27:10,556 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-28 07:27:10,567 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-28 07:27:10,603 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:27:10,603 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:27:10,603 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:27:10,603 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:27:10,603 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:27:10,604 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:27:10,604 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:27:10,604 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:27:10,625 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-11-28 07:27:10,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:27:10,637 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:10,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:10,638 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]=== [2020-11-28 07:27:10,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:10,644 INFO L82 PathProgramCache]: Analyzing trace with hash 490925571, now seen corresponding path program 1 times [2020-11-28 07:27:10,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:10,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121507796] [2020-11-28 07:27:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:27:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:10,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:10,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121507796] [2020-11-28 07:27:10,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:10,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:27:10,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983037161] [2020-11-28 07:27:10,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:27:10,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:27:10,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:27:10,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:27:10,998 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 6 states. [2020-11-28 07:27:11,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:11,160 INFO L93 Difference]: Finished difference Result 210 states and 311 transitions. [2020-11-28 07:27:11,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:27:11,162 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-28 07:27:11,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:11,173 INFO L225 Difference]: With dead ends: 210 [2020-11-28 07:27:11,173 INFO L226 Difference]: Without dead ends: 145 [2020-11-28 07:27:11,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:27:11,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-28 07:27:11,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 66. [2020-11-28 07:27:11,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-28 07:27:11,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2020-11-28 07:27:11,231 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 10 [2020-11-28 07:27:11,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:11,231 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2020-11-28 07:27:11,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:27:11,231 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2020-11-28 07:27:11,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:27:11,232 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:11,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:11,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:27:11,233 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]=== [2020-11-28 07:27:11,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:11,234 INFO L82 PathProgramCache]: Analyzing trace with hash 922267942, now seen corresponding path program 1 times [2020-11-28 07:27:11,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:11,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880072546] [2020-11-28 07:27:11,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:27:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:11,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:11,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880072546] [2020-11-28 07:27:11,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:11,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 07:27:11,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590410726] [2020-11-28 07:27:11,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:27:11,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:27:11,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:27:11,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:27:11,477 INFO L87 Difference]: Start difference. First operand 66 states and 90 transitions. Second operand 7 states. [2020-11-28 07:27:11,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:11,846 INFO L93 Difference]: Finished difference Result 239 states and 298 transitions. [2020-11-28 07:27:11,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 07:27:11,852 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-28 07:27:11,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:11,854 INFO L225 Difference]: With dead ends: 239 [2020-11-28 07:27:11,854 INFO L226 Difference]: Without dead ends: 225 [2020-11-28 07:27:11,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:27:11,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-11-28 07:27:11,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 98. [2020-11-28 07:27:11,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-28 07:27:11,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 139 transitions. [2020-11-28 07:27:11,882 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 139 transitions. Word has length 13 [2020-11-28 07:27:11,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:11,883 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 139 transitions. [2020-11-28 07:27:11,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:27:11,883 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 139 transitions. [2020-11-28 07:27:11,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:27:11,885 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:11,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:11,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:27:11,886 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]=== [2020-11-28 07:27:11,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:11,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1421610550, now seen corresponding path program 1 times [2020-11-28 07:27:11,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:11,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459085924] [2020-11-28 07:27:11,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:27:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:12,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:12,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459085924] [2020-11-28 07:27:12,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:12,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-28 07:27:12,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091777344] [2020-11-28 07:27:12,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 07:27:12,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:27:12,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 07:27:12,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:27:12,185 INFO L87 Difference]: Start difference. First operand 98 states and 139 transitions. Second operand 9 states. [2020-11-28 07:27:12,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:12,496 INFO L93 Difference]: Finished difference Result 176 states and 234 transitions. [2020-11-28 07:27:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 07:27:12,498 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-11-28 07:27:12,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:12,499 INFO L225 Difference]: With dead ends: 176 [2020-11-28 07:27:12,500 INFO L226 Difference]: Without dead ends: 164 [2020-11-28 07:27:12,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-11-28 07:27:12,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-11-28 07:27:12,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-11-28 07:27:12,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-11-28 07:27:12,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 184 transitions. [2020-11-28 07:27:12,522 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 184 transitions. Word has length 14 [2020-11-28 07:27:12,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:12,522 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 184 transitions. [2020-11-28 07:27:12,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 07:27:12,523 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 184 transitions. [2020-11-28 07:27:12,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:27:12,524 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:12,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:12,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:27:12,524 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]=== [2020-11-28 07:27:12,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:12,525 INFO L82 PathProgramCache]: Analyzing trace with hash 685742776, now seen corresponding path program 1 times [2020-11-28 07:27:12,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:12,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351668501] [2020-11-28 07:27:12,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:27:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:12,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:12,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351668501] [2020-11-28 07:27:12,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:12,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:27:12,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376722029] [2020-11-28 07:27:12,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:27:12,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:27:12,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:27:12,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:27:12,713 INFO L87 Difference]: Start difference. First operand 130 states and 184 transitions. Second operand 5 states. [2020-11-28 07:27:12,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:12,837 INFO L93 Difference]: Finished difference Result 196 states and 252 transitions. [2020-11-28 07:27:12,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 07:27:12,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-28 07:27:12,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:12,840 INFO L225 Difference]: With dead ends: 196 [2020-11-28 07:27:12,840 INFO L226 Difference]: Without dead ends: 154 [2020-11-28 07:27:12,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:27:12,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-28 07:27:12,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 110. [2020-11-28 07:27:12,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-11-28 07:27:12,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 150 transitions. [2020-11-28 07:27:12,861 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 150 transitions. Word has length 14 [2020-11-28 07:27:12,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:12,862 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 150 transitions. [2020-11-28 07:27:12,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:27:12,862 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 150 transitions. [2020-11-28 07:27:12,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:27:12,868 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:12,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:12,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:27:12,869 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]=== [2020-11-28 07:27:12,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:12,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1997255189, now seen corresponding path program 1 times [2020-11-28 07:27:12,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:12,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915956971] [2020-11-28 07:27:12,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:27:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:13,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:13,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915956971] [2020-11-28 07:27:13,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:13,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-28 07:27:13,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29138325] [2020-11-28 07:27:13,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:27:13,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:27:13,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:27:13,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:27:13,089 INFO L87 Difference]: Start difference. First operand 110 states and 150 transitions. Second operand 8 states. [2020-11-28 07:27:14,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:14,157 INFO L93 Difference]: Finished difference Result 285 states and 370 transitions. [2020-11-28 07:27:14,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-28 07:27:14,158 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-11-28 07:27:14,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:14,160 INFO L225 Difference]: With dead ends: 285 [2020-11-28 07:27:14,160 INFO L226 Difference]: Without dead ends: 245 [2020-11-28 07:27:14,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-11-28 07:27:14,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-11-28 07:27:14,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 129. [2020-11-28 07:27:14,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-11-28 07:27:14,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 177 transitions. [2020-11-28 07:27:14,176 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 177 transitions. Word has length 17 [2020-11-28 07:27:14,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:14,176 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 177 transitions. [2020-11-28 07:27:14,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:27:14,176 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 177 transitions. [2020-11-28 07:27:14,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:27:14,177 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:14,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:14,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:27:14,178 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]=== [2020-11-28 07:27:14,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:14,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1519238737, now seen corresponding path program 1 times [2020-11-28 07:27:14,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:14,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13753799] [2020-11-28 07:27:14,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:27:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:14,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13753799] [2020-11-28 07:27:14,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:14,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 07:27:14,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921344921] [2020-11-28 07:27:14,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:27:14,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:27:14,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:27:14,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:27:14,288 INFO L87 Difference]: Start difference. First operand 129 states and 177 transitions. Second operand 6 states. [2020-11-28 07:27:14,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:14,405 INFO L93 Difference]: Finished difference Result 237 states and 309 transitions. [2020-11-28 07:27:14,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 07:27:14,409 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-28 07:27:14,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:14,410 INFO L225 Difference]: With dead ends: 237 [2020-11-28 07:27:14,410 INFO L226 Difference]: Without dead ends: 216 [2020-11-28 07:27:14,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:27:14,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-28 07:27:14,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 124. [2020-11-28 07:27:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-28 07:27:14,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 171 transitions. [2020-11-28 07:27:14,427 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 171 transitions. Word has length 17 [2020-11-28 07:27:14,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:14,428 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 171 transitions. [2020-11-28 07:27:14,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:27:14,432 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 171 transitions. [2020-11-28 07:27:14,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:27:14,433 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:14,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:14,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:27:14,434 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]=== [2020-11-28 07:27:14,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:14,435 INFO L82 PathProgramCache]: Analyzing trace with hash 178338815, now seen corresponding path program 1 times [2020-11-28 07:27:14,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:14,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453265801] [2020-11-28 07:27:14,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:27:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:15,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:15,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453265801] [2020-11-28 07:27:15,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:15,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-28 07:27:15,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72031510] [2020-11-28 07:27:15,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 07:27:15,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:27:15,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 07:27:15,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-11-28 07:27:15,201 INFO L87 Difference]: Start difference. First operand 124 states and 171 transitions. Second operand 12 states. [2020-11-28 07:27:15,578 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-11-28 07:27:15,873 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-11-28 07:27:16,144 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-11-28 07:27:16,427 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-11-28 07:27:16,696 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-11-28 07:27:16,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:16,784 INFO L93 Difference]: Finished difference Result 218 states and 287 transitions. [2020-11-28 07:27:16,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 07:27:16,785 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-28 07:27:16,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:16,787 INFO L225 Difference]: With dead ends: 218 [2020-11-28 07:27:16,787 INFO L226 Difference]: Without dead ends: 214 [2020-11-28 07:27:16,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-11-28 07:27:16,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-11-28 07:27:16,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 125. [2020-11-28 07:27:16,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-28 07:27:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 172 transitions. [2020-11-28 07:27:16,797 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 172 transitions. Word has length 18 [2020-11-28 07:27:16,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:16,798 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 172 transitions. [2020-11-28 07:27:16,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 07:27:16,798 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 172 transitions. [2020-11-28 07:27:16,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:27:16,799 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:16,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:16,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:27:16,799 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]=== [2020-11-28 07:27:16,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:16,800 INFO L82 PathProgramCache]: Analyzing trace with hash -349390935, now seen corresponding path program 1 times [2020-11-28 07:27:16,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:16,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091311842] [2020-11-28 07:27:16,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:27:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:27:16,838 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:27:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:27:16,901 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:27:16,934 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:27:16,935 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:27:16,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:27:16,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:27:16 BoogieIcfgContainer [2020-11-28 07:27:16,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:27:17,000 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:27:17,000 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:27:17,000 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:27:17,001 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:10" (3/4) ... [2020-11-28 07:27:17,003 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:27:17,004 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:27:17,009 INFO L168 Benchmark]: Toolchain (without parser) took 8488.62 ms. Allocated memory was 113.2 MB in the beginning and 138.4 MB in the end (delta: 25.2 MB). Free memory was 82.4 MB in the beginning and 68.7 MB in the end (delta: 13.7 MB). Peak memory consumption was 39.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:17,011 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 79.7 MB. Free memory was 39.3 MB in the beginning and 39.3 MB in the end (delta: 37.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:27:17,012 INFO L168 Benchmark]: CACSL2BoogieTranslator took 437.03 ms. Allocated memory is still 113.2 MB. Free memory was 82.1 MB in the beginning and 87.1 MB in the end (delta: -5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:17,012 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.17 ms. Allocated memory is still 113.2 MB. Free memory was 86.5 MB in the beginning and 84.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:17,013 INFO L168 Benchmark]: Boogie Preprocessor took 74.42 ms. Allocated memory is still 113.2 MB. Free memory was 84.4 MB in the beginning and 82.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:27:17,013 INFO L168 Benchmark]: RCFGBuilder took 1432.15 ms. Allocated memory is still 113.2 MB. Free memory was 82.3 MB in the beginning and 76.4 MB in the end (delta: 5.8 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:17,016 INFO L168 Benchmark]: TraceAbstraction took 6466.75 ms. Allocated memory was 113.2 MB in the beginning and 138.4 MB in the end (delta: 25.2 MB). Free memory was 75.8 MB in the beginning and 68.7 MB in the end (delta: 7.1 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:17,017 INFO L168 Benchmark]: Witness Printer took 4.18 ms. Allocated memory is still 138.4 MB. Free memory is still 68.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:27:17,023 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 79.7 MB. Free memory was 39.3 MB in the beginning and 39.3 MB in the end (delta: 37.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 437.03 ms. Allocated memory is still 113.2 MB. Free memory was 82.1 MB in the beginning and 87.1 MB in the end (delta: -5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.17 ms. Allocated memory is still 113.2 MB. Free memory was 86.5 MB in the beginning and 84.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.42 ms. Allocated memory is still 113.2 MB. Free memory was 84.4 MB in the beginning and 82.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1432.15 ms. Allocated memory is still 113.2 MB. Free memory was 82.3 MB in the beginning and 76.4 MB in the end (delta: 5.8 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6466.75 ms. Allocated memory was 113.2 MB in the beginning and 138.4 MB in the end (delta: 25.2 MB). Free memory was 75.8 MB in the beginning and 68.7 MB in the end (delta: 7.1 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.18 ms. Allocated memory is still 138.4 MB. Free memory is still 68.7 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, 66 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 704 SDtfs, 1348 SDslu, 2760 SDs, 0 SdLazy, 546 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 581 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 11612 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 [2020-11-28 07:27:19,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:27:19,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:27:19,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:27:19,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:27:19,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:27:19,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:27:19,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:27:19,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:27:19,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:27:19,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:27:19,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:27:19,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:27:19,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:27:19,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:27:19,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:27:19,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:27:19,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:27:19,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:27:19,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:27:19,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:27:19,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:27:19,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:27:19,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:27:19,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:27:19,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:27:19,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:27:19,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:27:19,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:27:19,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:27:19,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:27:19,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:27:19,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:27:19,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:27:19,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:27:19,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:27:19,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:27:19,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:27:19,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:27:19,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:27:19,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:27:19,514 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:27:19,538 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:27:19,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:27:19,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:27:19,548 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:27:19,549 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:27:19,549 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:27:19,549 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:27:19,549 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:27:19,550 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:27:19,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:27:19,552 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:27:19,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:27:19,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:27:19,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:27:19,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:27:19,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:27:19,553 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:27:19,554 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:27:19,554 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:27:19,554 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:27:19,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:27:19,554 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:27:19,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:27:19,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:27:19,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:27:19,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:27:19,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:27:19,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:27:19,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:27:19,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:27:19,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:27:19,557 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:27:19,557 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:27:19,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:27:19,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:27:19,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:27:19,558 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_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f20531c98faa0af8884f2ddaf47888911b3a46 [2020-11-28 07:27:19,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:27:20,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:27:20,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:27:20,023 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:27:20,025 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:27:20,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-11-28 07:27:20,103 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/data/7879f1e6d/2517c86302294e4f8280f5e8b5616f0b/FLAG097d98b6e [2020-11-28 07:27:20,695 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:27:20,697 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2020-11-28 07:27:20,711 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/data/7879f1e6d/2517c86302294e4f8280f5e8b5616f0b/FLAG097d98b6e [2020-11-28 07:27:21,001 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/data/7879f1e6d/2517c86302294e4f8280f5e8b5616f0b [2020-11-28 07:27:21,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:27:21,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:27:21,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:27:21,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:27:21,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:27:21,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:27:21" (1/1) ... [2020-11-28 07:27:21,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5edead41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:21, skipping insertion in model container [2020-11-28 07:27:21,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:27:21" (1/1) ... [2020-11-28 07:27:21,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:27:21,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:27:21,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:27:21,246 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:27:21,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:27:21,354 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:27:21,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:21 WrapperNode [2020-11-28 07:27:21,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:27:21,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:27:21,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:27:21,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:27:21,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:21" (1/1) ... [2020-11-28 07:27:21,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:21" (1/1) ... [2020-11-28 07:27:21,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:27:21,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:27:21,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:27:21,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:27:21,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:21" (1/1) ... [2020-11-28 07:27:21,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:21" (1/1) ... [2020-11-28 07:27:21,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:21" (1/1) ... [2020-11-28 07:27:21,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:21" (1/1) ... [2020-11-28 07:27:21,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:21" (1/1) ... [2020-11-28 07:27:21,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:21" (1/1) ... [2020-11-28 07:27:21,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:21" (1/1) ... [2020-11-28 07:27:21,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:27:21,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:27:21,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:27:21,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:27:21,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/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 [2020-11-28 07:27:21,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:27:21,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:27:21,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:27:21,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:27:22,343 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:27:22,346 INFO L298 CfgBuilder]: Removed 42 assume(true) statements. [2020-11-28 07:27:22,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:22 BoogieIcfgContainer [2020-11-28 07:27:22,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:27:22,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:27:22,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:27:22,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:27:22,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:27:21" (1/3) ... [2020-11-28 07:27:22,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c521447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:27:22, skipping insertion in model container [2020-11-28 07:27:22,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:21" (2/3) ... [2020-11-28 07:27:22,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c521447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:27:22, skipping insertion in model container [2020-11-28 07:27:22,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:22" (3/3) ... [2020-11-28 07:27:22,359 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2020-11-28 07:27:22,368 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:27:22,372 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-28 07:27:22,380 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-28 07:27:22,401 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:27:22,402 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:27:22,402 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:27:22,402 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:27:22,402 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:27:22,402 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:27:22,402 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:27:22,403 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:27:22,426 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2020-11-28 07:27:22,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:27:22,432 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:22,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:22,433 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]=== [2020-11-28 07:27:22,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:22,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1626643796, now seen corresponding path program 1 times [2020-11-28 07:27:22,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:27:22,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663747497] [2020-11-28 07:27:22,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/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 [2020-11-28 07:27:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:22,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:27:22,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:27:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:22,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:27:22,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:22,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663747497] [2020-11-28 07:27:22,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:22,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-28 07:27:22,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020192700] [2020-11-28 07:27:22,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:27:22,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:27:22,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:27:22,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:27:22,682 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 5 states. [2020-11-28 07:27:23,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:23,059 INFO L93 Difference]: Finished difference Result 403 states and 613 transitions. [2020-11-28 07:27:23,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:27:23,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 07:27:23,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:23,075 INFO L225 Difference]: With dead ends: 403 [2020-11-28 07:27:23,075 INFO L226 Difference]: Without dead ends: 295 [2020-11-28 07:27:23,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:27:23,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-11-28 07:27:23,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 120. [2020-11-28 07:27:23,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-28 07:27:23,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 172 transitions. [2020-11-28 07:27:23,136 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 172 transitions. Word has length 18 [2020-11-28 07:27:23,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:23,136 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 172 transitions. [2020-11-28 07:27:23,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:27:23,136 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 172 transitions. [2020-11-28 07:27:23,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 07:27:23,137 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:23,137 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] [2020-11-28 07:27:23,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:27:23,338 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]=== [2020-11-28 07:27:23,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:23,339 INFO L82 PathProgramCache]: Analyzing trace with hash -908455500, now seen corresponding path program 1 times [2020-11-28 07:27:23,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:27:23,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142354401] [2020-11-28 07:27:23,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/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 [2020-11-28 07:27:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:23,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:27:23,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:27:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:23,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:27:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:23,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142354401] [2020-11-28 07:27:23,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:23,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-28 07:27:23,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681622902] [2020-11-28 07:27:23,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:27:23,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:27:23,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:27:23,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:27:23,496 INFO L87 Difference]: Start difference. First operand 120 states and 172 transitions. Second operand 5 states. [2020-11-28 07:27:23,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:23,884 INFO L93 Difference]: Finished difference Result 394 states and 543 transitions. [2020-11-28 07:27:23,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:27:23,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-28 07:27:23,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:23,888 INFO L225 Difference]: With dead ends: 394 [2020-11-28 07:27:23,888 INFO L226 Difference]: Without dead ends: 337 [2020-11-28 07:27:23,889 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 [2020-11-28 07:27:23,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-11-28 07:27:23,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 186. [2020-11-28 07:27:23,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-11-28 07:27:23,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 269 transitions. [2020-11-28 07:27:23,915 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 269 transitions. Word has length 22 [2020-11-28 07:27:23,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:23,916 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 269 transitions. [2020-11-28 07:27:23,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:27:23,916 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 269 transitions. [2020-11-28 07:27:23,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 07:27:23,918 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:23,918 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] [2020-11-28 07:27:24,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:27:24,133 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]=== [2020-11-28 07:27:24,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:24,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1301482510, now seen corresponding path program 1 times [2020-11-28 07:27:24,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:27:24,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351583960] [2020-11-28 07:27:24,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/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 [2020-11-28 07:27:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:24,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:27:24,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:27:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:24,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:27:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:24,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351583960] [2020-11-28 07:27:24,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:24,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-28 07:27:24,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105526357] [2020-11-28 07:27:24,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:27:24,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:27:24,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:27:24,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:27:24,288 INFO L87 Difference]: Start difference. First operand 186 states and 269 transitions. Second operand 5 states. [2020-11-28 07:27:24,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:24,455 INFO L93 Difference]: Finished difference Result 378 states and 535 transitions. [2020-11-28 07:27:24,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:27:24,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-28 07:27:24,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:24,458 INFO L225 Difference]: With dead ends: 378 [2020-11-28 07:27:24,458 INFO L226 Difference]: Without dead ends: 295 [2020-11-28 07:27:24,459 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 [2020-11-28 07:27:24,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-11-28 07:27:24,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 278. [2020-11-28 07:27:24,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-11-28 07:27:24,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 401 transitions. [2020-11-28 07:27:24,507 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 401 transitions. Word has length 22 [2020-11-28 07:27:24,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:24,508 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 401 transitions. [2020-11-28 07:27:24,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:27:24,509 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 401 transitions. [2020-11-28 07:27:24,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 07:27:24,513 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:24,514 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] [2020-11-28 07:27:24,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:27:24,725 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]=== [2020-11-28 07:27:24,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:24,726 INFO L82 PathProgramCache]: Analyzing trace with hash 473524852, now seen corresponding path program 1 times [2020-11-28 07:27:24,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:27:24,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523308432] [2020-11-28 07:27:24,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/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 [2020-11-28 07:27:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:24,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 07:27:24,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:27:24,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:24,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:27:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:24,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523308432] [2020-11-28 07:27:24,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:24,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-11-28 07:27:24,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350991122] [2020-11-28 07:27:24,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:27:24,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:27:24,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:27:24,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:27:24,890 INFO L87 Difference]: Start difference. First operand 278 states and 401 transitions. Second operand 6 states. [2020-11-28 07:27:25,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:25,105 INFO L93 Difference]: Finished difference Result 395 states and 553 transitions. [2020-11-28 07:27:25,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:27:25,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-28 07:27:25,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:25,109 INFO L225 Difference]: With dead ends: 395 [2020-11-28 07:27:25,109 INFO L226 Difference]: Without dead ends: 318 [2020-11-28 07:27:25,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:27:25,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-11-28 07:27:25,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 258. [2020-11-28 07:27:25,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-11-28 07:27:25,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 365 transitions. [2020-11-28 07:27:25,138 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 365 transitions. Word has length 22 [2020-11-28 07:27:25,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:25,139 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 365 transitions. [2020-11-28 07:27:25,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:27:25,139 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 365 transitions. [2020-11-28 07:27:25,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 07:27:25,145 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:25,145 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] [2020-11-28 07:27:25,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 07:27:25,357 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]=== [2020-11-28 07:27:25,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:25,358 INFO L82 PathProgramCache]: Analyzing trace with hash 177561437, now seen corresponding path program 1 times [2020-11-28 07:27:25,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:27:25,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582227433] [2020-11-28 07:27:25,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/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 [2020-11-28 07:27:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:25,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 07:27:25,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:27:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:25,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:27:25,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:25,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582227433] [2020-11-28 07:27:25,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:25,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-11-28 07:27:25,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740321596] [2020-11-28 07:27:25,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:27:25,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:27:25,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:27:25,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:27:25,510 INFO L87 Difference]: Start difference. First operand 258 states and 365 transitions. Second operand 7 states. [2020-11-28 07:27:25,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:25,902 INFO L93 Difference]: Finished difference Result 402 states and 541 transitions. [2020-11-28 07:27:25,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 07:27:25,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-11-28 07:27:25,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:25,906 INFO L225 Difference]: With dead ends: 402 [2020-11-28 07:27:25,906 INFO L226 Difference]: Without dead ends: 354 [2020-11-28 07:27:25,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-11-28 07:27:25,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-11-28 07:27:25,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 248. [2020-11-28 07:27:25,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-11-28 07:27:25,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 348 transitions. [2020-11-28 07:27:25,922 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 348 transitions. Word has length 26 [2020-11-28 07:27:25,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:25,922 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 348 transitions. [2020-11-28 07:27:25,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:27:25,922 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 348 transitions. [2020-11-28 07:27:25,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 07:27:25,923 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:25,924 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] [2020-11-28 07:27:26,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 07:27:26,140 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]=== [2020-11-28 07:27:26,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:26,141 INFO L82 PathProgramCache]: Analyzing trace with hash 397693116, now seen corresponding path program 1 times [2020-11-28 07:27:26,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:27:26,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244798177] [2020-11-28 07:27:26,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/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 [2020-11-28 07:27:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:26,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:27:26,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:27:26,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:26,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:27:26,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:26,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244798177] [2020-11-28 07:27:26,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:26,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:27:26,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369610807] [2020-11-28 07:27:26,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:27:26,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:27:26,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:27:26,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:27:26,258 INFO L87 Difference]: Start difference. First operand 248 states and 348 transitions. Second operand 6 states. [2020-11-28 07:27:26,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:26,328 INFO L93 Difference]: Finished difference Result 456 states and 635 transitions. [2020-11-28 07:27:26,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:27:26,329 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-11-28 07:27:26,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:26,332 INFO L225 Difference]: With dead ends: 456 [2020-11-28 07:27:26,332 INFO L226 Difference]: Without dead ends: 381 [2020-11-28 07:27:26,335 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 [2020-11-28 07:27:26,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-11-28 07:27:26,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 310. [2020-11-28 07:27:26,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-11-28 07:27:26,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 423 transitions. [2020-11-28 07:27:26,355 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 423 transitions. Word has length 30 [2020-11-28 07:27:26,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:26,355 INFO L481 AbstractCegarLoop]: Abstraction has 310 states and 423 transitions. [2020-11-28 07:27:26,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:27:26,355 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 423 transitions. [2020-11-28 07:27:26,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 07:27:26,357 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:26,358 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] [2020-11-28 07:27:26,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 07:27:26,573 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]=== [2020-11-28 07:27:26,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:26,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1878814160, now seen corresponding path program 1 times [2020-11-28 07:27:26,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:27:26,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566593514] [2020-11-28 07:27:26,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/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 [2020-11-28 07:27:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:26,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 07:27:26,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:27:26,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:26,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:27:26,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:26,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566593514] [2020-11-28 07:27:26,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:26,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2020-11-28 07:27:26,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179490090] [2020-11-28 07:27:26,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:27:26,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:27:26,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:27:26,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:27:26,740 INFO L87 Difference]: Start difference. First operand 310 states and 423 transitions. Second operand 8 states. [2020-11-28 07:27:27,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:27,470 INFO L93 Difference]: Finished difference Result 912 states and 1264 transitions. [2020-11-28 07:27:27,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-28 07:27:27,471 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-11-28 07:27:27,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:27,476 INFO L225 Difference]: With dead ends: 912 [2020-11-28 07:27:27,476 INFO L226 Difference]: Without dead ends: 805 [2020-11-28 07:27:27,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-11-28 07:27:27,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2020-11-28 07:27:27,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 446. [2020-11-28 07:27:27,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-11-28 07:27:27,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 608 transitions. [2020-11-28 07:27:27,522 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 608 transitions. Word has length 30 [2020-11-28 07:27:27,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:27,523 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 608 transitions. [2020-11-28 07:27:27,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:27:27,523 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 608 transitions. [2020-11-28 07:27:27,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 07:27:27,526 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:27,526 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] [2020-11-28 07:27:27,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-28 07:27:27,745 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]=== [2020-11-28 07:27:27,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:27,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1434134121, now seen corresponding path program 1 times [2020-11-28 07:27:27,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:27:27,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441852492] [2020-11-28 07:27:27,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/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 [2020-11-28 07:27:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:27,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:27:27,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:27:27,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:27,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:27:27,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:27,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441852492] [2020-11-28 07:27:27,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:27,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2020-11-28 07:27:27,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888704313] [2020-11-28 07:27:27,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 07:27:27,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:27:27,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 07:27:27,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:27:27,956 INFO L87 Difference]: Start difference. First operand 446 states and 608 transitions. Second operand 13 states. [2020-11-28 07:27:29,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:29,194 INFO L93 Difference]: Finished difference Result 746 states and 1004 transitions. [2020-11-28 07:27:29,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-28 07:27:29,195 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-11-28 07:27:29,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:29,199 INFO L225 Difference]: With dead ends: 746 [2020-11-28 07:27:29,199 INFO L226 Difference]: Without dead ends: 705 [2020-11-28 07:27:29,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2020-11-28 07:27:29,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-11-28 07:27:29,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 444. [2020-11-28 07:27:29,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-11-28 07:27:29,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 606 transitions. [2020-11-28 07:27:29,236 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 606 transitions. Word has length 31 [2020-11-28 07:27:29,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:29,237 INFO L481 AbstractCegarLoop]: Abstraction has 444 states and 606 transitions. [2020-11-28 07:27:29,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 07:27:29,237 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 606 transitions. [2020-11-28 07:27:29,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 07:27:29,238 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:29,238 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] [2020-11-28 07:27:29,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-28 07:27:29,453 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]=== [2020-11-28 07:27:29,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:29,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1376875819, now seen corresponding path program 1 times [2020-11-28 07:27:29,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:27:29,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902102210] [2020-11-28 07:27:29,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/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 [2020-11-28 07:27:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:29,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:27:29,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:27:29,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:29,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:27:29,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:29,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902102210] [2020-11-28 07:27:29,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:29,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:27:29,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386469071] [2020-11-28 07:27:29,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:27:29,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:27:29,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:27:29,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:27:29,558 INFO L87 Difference]: Start difference. First operand 444 states and 606 transitions. Second operand 6 states. [2020-11-28 07:27:29,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:29,685 INFO L93 Difference]: Finished difference Result 501 states and 681 transitions. [2020-11-28 07:27:29,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:27:29,686 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-11-28 07:27:29,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:29,689 INFO L225 Difference]: With dead ends: 501 [2020-11-28 07:27:29,689 INFO L226 Difference]: Without dead ends: 496 [2020-11-28 07:27:29,690 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 [2020-11-28 07:27:29,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-11-28 07:27:29,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 444. [2020-11-28 07:27:29,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-11-28 07:27:29,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 601 transitions. [2020-11-28 07:27:29,721 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 601 transitions. Word has length 31 [2020-11-28 07:27:29,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:29,722 INFO L481 AbstractCegarLoop]: Abstraction has 444 states and 601 transitions. [2020-11-28 07:27:29,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:27:29,722 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 601 transitions. [2020-11-28 07:27:29,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 07:27:29,723 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:29,723 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] [2020-11-28 07:27:29,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-28 07:27:29,936 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]=== [2020-11-28 07:27:29,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:29,936 INFO L82 PathProgramCache]: Analyzing trace with hash 6505427, now seen corresponding path program 1 times [2020-11-28 07:27:29,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:27:29,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609418484] [2020-11-28 07:27:29,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/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 [2020-11-28 07:27:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:30,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:27:30,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:27:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:30,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:27:30,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:30,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609418484] [2020-11-28 07:27:30,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:30,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:27:30,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725860980] [2020-11-28 07:27:30,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:27:30,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:27:30,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:27:30,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:27:30,048 INFO L87 Difference]: Start difference. First operand 444 states and 601 transitions. Second operand 6 states. [2020-11-28 07:27:30,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:30,152 INFO L93 Difference]: Finished difference Result 901 states and 1199 transitions. [2020-11-28 07:27:30,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:27:30,152 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-11-28 07:27:30,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:30,157 INFO L225 Difference]: With dead ends: 901 [2020-11-28 07:27:30,157 INFO L226 Difference]: Without dead ends: 842 [2020-11-28 07:27:30,158 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 [2020-11-28 07:27:30,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2020-11-28 07:27:30,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 476. [2020-11-28 07:27:30,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-11-28 07:27:30,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 646 transitions. [2020-11-28 07:27:30,198 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 646 transitions. Word has length 32 [2020-11-28 07:27:30,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:30,198 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 646 transitions. [2020-11-28 07:27:30,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:27:30,199 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 646 transitions. [2020-11-28 07:27:30,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 07:27:30,200 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:30,200 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] [2020-11-28 07:27:30,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-28 07:27:30,417 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]=== [2020-11-28 07:27:30,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:30,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1711625809, now seen corresponding path program 1 times [2020-11-28 07:27:30,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:27:30,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417877999] [2020-11-28 07:27:30,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/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 [2020-11-28 07:27:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:27:30,494 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:27:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:27:30,544 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:27:30,592 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-28 07:27:30,592 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:27:30,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-28 07:27:30,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:27:30 BoogieIcfgContainer [2020-11-28 07:27:30,871 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:27:30,872 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:27:30,872 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:27:30,872 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:27:30,873 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:22" (3/4) ... [2020-11-28 07:27:30,875 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:27:30,973 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_236fdc61-94cb-45ba-b4b1-d03b503b971b/bin/utaipan/witness.graphml [2020-11-28 07:27:30,973 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:27:30,975 INFO L168 Benchmark]: Toolchain (without parser) took 9968.44 ms. Allocated memory was 60.8 MB in the beginning and 113.2 MB in the end (delta: 52.4 MB). Free memory was 41.0 MB in the beginning and 49.8 MB in the end (delta: -8.8 MB). Peak memory consumption was 43.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:30,975 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 60.8 MB. Free memory is still 42.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:27:30,975 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.38 ms. Allocated memory is still 60.8 MB. Free memory was 40.9 MB in the beginning and 41.9 MB in the end (delta: -1.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:30,976 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.52 ms. Allocated memory is still 60.8 MB. Free memory was 41.7 MB in the beginning and 39.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:30,976 INFO L168 Benchmark]: Boogie Preprocessor took 38.04 ms. Allocated memory is still 60.8 MB. Free memory was 39.5 MB in the beginning and 37.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:30,977 INFO L168 Benchmark]: RCFGBuilder took 890.05 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 37.6 MB in the beginning and 38.8 MB in the end (delta: -1.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:30,977 INFO L168 Benchmark]: TraceAbstraction took 8519.26 ms. Allocated memory was 77.6 MB in the beginning and 113.2 MB in the end (delta: 35.7 MB). Free memory was 38.4 MB in the beginning and 54.0 MB in the end (delta: -15.6 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:30,978 INFO L168 Benchmark]: Witness Printer took 101.15 ms. Allocated memory is still 113.2 MB. Free memory was 54.0 MB in the beginning and 49.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:30,980 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 60.8 MB. Free memory is still 42.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 348.38 ms. Allocated memory is still 60.8 MB. Free memory was 40.9 MB in the beginning and 41.9 MB in the end (delta: -1.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.52 ms. Allocated memory is still 60.8 MB. Free memory was 41.7 MB in the beginning and 39.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.04 ms. Allocated memory is still 60.8 MB. Free memory was 39.5 MB in the beginning and 37.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 890.05 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 37.6 MB in the beginning and 38.8 MB in the end (delta: -1.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8519.26 ms. Allocated memory was 77.6 MB in the beginning and 113.2 MB in the end (delta: 35.7 MB). Free memory was 38.4 MB in the beginning and 54.0 MB in the end (delta: -15.6 MB). Peak memory consumption was 19.4 MB. Max. memory is 16.1 GB. * Witness Printer took 101.15 ms. Allocated memory is still 113.2 MB. Free memory was 54.0 MB in the beginning and 49.8 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: 8.4s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 3.9s, 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, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 571 GetRequests, 465 SyntacticMatches, 7 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.4s 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: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 1618 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s 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...