./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5977619415d9c54d55bb3de80e610b570f29e97a95a856bc3f620bebee04c8a4 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5977619415d9c54d55bb3de80e610b570f29e97a95a856bc3f620bebee04c8a4 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.1-dev-e943c26 [2021-10-21 19:13:55,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:13:55,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:13:55,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:13:55,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:13:55,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:13:55,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:13:55,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:13:55,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:13:55,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:13:55,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:13:55,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:13:55,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:13:55,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:13:55,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:13:55,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:13:55,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:13:55,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:13:55,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:13:55,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:13:55,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:13:55,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:13:55,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:13:55,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:13:55,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:13:55,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:13:55,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:13:55,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:13:55,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:13:55,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:13:55,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:13:55,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:13:55,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:13:55,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:13:55,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:13:55,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:13:55,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:13:55,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:13:55,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:13:55,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:13:55,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:13:55,742 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:13:55,789 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:13:55,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:13:55,789 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:13:55,789 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:13:55,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:13:55,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:13:55,791 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:13:55,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:13:55,791 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:13:55,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:13:55,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:13:55,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:13:55,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:13:55,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:13:55,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:13:55,793 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:13:55,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:13:55,799 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:13:55,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:13:55,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:13:55,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:13:55,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:13:55,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:13:55,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:13:55,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:13:55,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:13:55,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:13:55,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:13:55,803 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:13:55,804 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:13:55,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:13:55,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:13:55,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5977619415d9c54d55bb3de80e610b570f29e97a95a856bc3f620bebee04c8a4 [2021-10-21 19:13:56,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:13:56,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:13:56,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:13:56,153 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:13:56,154 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:13:56,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-10-21 19:13:56,241 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/data/74c281775/00384549c0434ca6876ec48867d0ce3f/FLAG1cc415edd [2021-10-21 19:13:56,712 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:13:56,715 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-10-21 19:13:56,735 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/data/74c281775/00384549c0434ca6876ec48867d0ce3f/FLAG1cc415edd [2021-10-21 19:13:57,061 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/data/74c281775/00384549c0434ca6876ec48867d0ce3f [2021-10-21 19:13:57,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:13:57,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:13:57,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:13:57,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:13:57,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:13:57,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:13:57" (1/1) ... [2021-10-21 19:13:57,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52867163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:57, skipping insertion in model container [2021-10-21 19:13:57,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:13:57" (1/1) ... [2021-10-21 19:13:57,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:13:57,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:13:57,286 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-10-21 19:13:57,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:13:57,347 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:13:57,359 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-10-21 19:13:57,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:13:57,413 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:13:57,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:57 WrapperNode [2021-10-21 19:13:57,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:13:57,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:13:57,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:13:57,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:13:57,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:57" (1/1) ... [2021-10-21 19:13:57,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:57" (1/1) ... [2021-10-21 19:13:57,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:13:57,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:13:57,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:13:57,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:13:57,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:57" (1/1) ... [2021-10-21 19:13:57,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:57" (1/1) ... [2021-10-21 19:13:57,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:57" (1/1) ... [2021-10-21 19:13:57,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:57" (1/1) ... [2021-10-21 19:13:57,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:57" (1/1) ... [2021-10-21 19:13:57,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:57" (1/1) ... [2021-10-21 19:13:57,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:57" (1/1) ... [2021-10-21 19:13:57,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:13:57,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:13:57,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:13:57,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:13:57,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:57" (1/1) ... [2021-10-21 19:13:57,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:13:57,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:13:57,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:13:57,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:13:57,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:13:57,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:13:57,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:13:57,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:13:58,096 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:13:58,108 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-21 19:13:58,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:13:58 BoogieIcfgContainer [2021-10-21 19:13:58,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:13:58,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:13:58,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:13:58,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:13:58,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:13:57" (1/3) ... [2021-10-21 19:13:58,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe9f716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:13:58, skipping insertion in model container [2021-10-21 19:13:58,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:13:57" (2/3) ... [2021-10-21 19:13:58,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe9f716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:13:58, skipping insertion in model container [2021-10-21 19:13:58,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:13:58" (3/3) ... [2021-10-21 19:13:58,119 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2021-10-21 19:13:58,125 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:13:58,125 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-21 19:13:58,175 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:13:58,181 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:13:58,182 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-21 19:13:58,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 89 states have (on average 1.7303370786516854) internal successors, (154), 95 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:13:58,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 19:13:58,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:13:58,203 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:58,204 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:13:58,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:58,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1626643796, now seen corresponding path program 1 times [2021-10-21 19:13:58,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:58,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805272182] [2021-10-21 19:13:58,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:58,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:58,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:13:58,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:58,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805272182] [2021-10-21 19:13:58,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805272182] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:58,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:58,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:13:58,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532446516] [2021-10-21 19:13:58,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:13:58,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:58,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:13:58,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:13:58,580 INFO L87 Difference]: Start difference. First operand has 96 states, 89 states have (on average 1.7303370786516854) internal successors, (154), 95 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:13:59,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:59,010 INFO L93 Difference]: Finished difference Result 458 states and 692 transitions. [2021-10-21 19:13:59,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:13:59,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-21 19:13:59,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:13:59,027 INFO L225 Difference]: With dead ends: 458 [2021-10-21 19:13:59,027 INFO L226 Difference]: Without dead ends: 348 [2021-10-21 19:13:59,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 89.2ms TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:13:59,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-10-21 19:13:59,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 142. [2021-10-21 19:13:59,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 136 states have (on average 1.5147058823529411) internal successors, (206), 141 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:13:59,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 206 transitions. [2021-10-21 19:13:59,139 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 206 transitions. Word has length 18 [2021-10-21 19:13:59,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:13:59,140 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 206 transitions. [2021-10-21 19:13:59,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:13:59,140 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 206 transitions. [2021-10-21 19:13:59,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 19:13:59,141 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:13:59,142 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:13:59,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:13:59,142 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:13:59,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:59,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1626703378, now seen corresponding path program 1 times [2021-10-21 19:13:59,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:59,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982816298] [2021-10-21 19:13:59,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:59,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:13:59,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:59,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982816298] [2021-10-21 19:13:59,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982816298] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:59,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:59,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:13:59,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334064675] [2021-10-21 19:13:59,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:13:59,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:59,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:13:59,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:13:59,269 INFO L87 Difference]: Start difference. First operand 142 states and 206 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:13:59,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:59,391 INFO L93 Difference]: Finished difference Result 299 states and 427 transitions. [2021-10-21 19:13:59,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:13:59,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-21 19:13:59,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:13:59,395 INFO L225 Difference]: With dead ends: 299 [2021-10-21 19:13:59,397 INFO L226 Difference]: Without dead ends: 215 [2021-10-21 19:13:59,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:13:59,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-10-21 19:13:59,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 202. [2021-10-21 19:13:59,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 196 states have (on average 1.4744897959183674) internal successors, (289), 201 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:13:59,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 289 transitions. [2021-10-21 19:13:59,433 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 289 transitions. Word has length 18 [2021-10-21 19:13:59,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:13:59,433 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 289 transitions. [2021-10-21 19:13:59,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:13:59,434 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 289 transitions. [2021-10-21 19:13:59,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:13:59,436 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:13:59,437 INFO L512 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] [2021-10-21 19:13:59,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:13:59,437 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:13:59,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:59,440 INFO L82 PathProgramCache]: Analyzing trace with hash 442130173, now seen corresponding path program 1 times [2021-10-21 19:13:59,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:59,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389248043] [2021-10-21 19:13:59,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:59,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:13:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:13:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:13:59,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:13:59,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389248043] [2021-10-21 19:13:59,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389248043] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:13:59,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:13:59,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:13:59,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739998005] [2021-10-21 19:13:59,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:13:59,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:13:59,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:13:59,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:13:59,684 INFO L87 Difference]: Start difference. First operand 202 states and 289 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:13:59,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:13:59,928 INFO L93 Difference]: Finished difference Result 315 states and 421 transitions. [2021-10-21 19:13:59,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:13:59,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-21 19:13:59,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:13:59,932 INFO L225 Difference]: With dead ends: 315 [2021-10-21 19:13:59,932 INFO L226 Difference]: Without dead ends: 267 [2021-10-21 19:13:59,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 82.0ms TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:13:59,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-10-21 19:13:59,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 191. [2021-10-21 19:13:59,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 185 states have (on average 1.4648648648648648) internal successors, (271), 190 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:13:59,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 271 transitions. [2021-10-21 19:13:59,971 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 271 transitions. Word has length 22 [2021-10-21 19:13:59,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:13:59,971 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 271 transitions. [2021-10-21 19:13:59,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:13:59,972 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 271 transitions. [2021-10-21 19:13:59,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 19:13:59,978 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:13:59,979 INFO L512 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] [2021-10-21 19:13:59,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:13:59,979 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:13:59,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:13:59,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1605480230, now seen corresponding path program 1 times [2021-10-21 19:13:59,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:13:59,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250250250] [2021-10-21 19:13:59,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:13:59,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:00,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:00,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:14:00,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250250250] [2021-10-21 19:14:00,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250250250] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:00,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:00,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:14:00,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317387656] [2021-10-21 19:14:00,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:14:00,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:14:00,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:14:00,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:14:00,075 INFO L87 Difference]: Start difference. First operand 191 states and 271 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:00,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:14:00,109 INFO L93 Difference]: Finished difference Result 345 states and 487 transitions. [2021-10-21 19:14:00,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:14:00,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-21 19:14:00,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:14:00,112 INFO L225 Difference]: With dead ends: 345 [2021-10-21 19:14:00,112 INFO L226 Difference]: Without dead ends: 270 [2021-10-21 19:14:00,116 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:14:00,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-10-21 19:14:00,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 241. [2021-10-21 19:14:00,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 235 states have (on average 1.4297872340425533) internal successors, (336), 240 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:00,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 336 transitions. [2021-10-21 19:14:00,135 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 336 transitions. Word has length 26 [2021-10-21 19:14:00,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:14:00,136 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 336 transitions. [2021-10-21 19:14:00,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:00,136 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 336 transitions. [2021-10-21 19:14:00,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 19:14:00,138 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:14:00,138 INFO L512 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] [2021-10-21 19:14:00,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:14:00,138 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:14:00,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:00,139 INFO L82 PathProgramCache]: Analyzing trace with hash -855546000, now seen corresponding path program 1 times [2021-10-21 19:14:00,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:00,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613904330] [2021-10-21 19:14:00,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:00,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:00,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:00,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:14:00,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613904330] [2021-10-21 19:14:00,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613904330] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:00,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:00,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:14:00,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682635625] [2021-10-21 19:14:00,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:14:00,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:14:00,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:14:00,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:14:00,275 INFO L87 Difference]: Start difference. First operand 241 states and 336 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:00,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:14:00,388 INFO L93 Difference]: Finished difference Result 608 states and 834 transitions. [2021-10-21 19:14:00,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:14:00,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-21 19:14:00,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:14:00,392 INFO L225 Difference]: With dead ends: 608 [2021-10-21 19:14:00,392 INFO L226 Difference]: Without dead ends: 443 [2021-10-21 19:14:00,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 30.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:14:00,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-10-21 19:14:00,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 298. [2021-10-21 19:14:00,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 292 states have (on average 1.4143835616438356) internal successors, (413), 297 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:00,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 413 transitions. [2021-10-21 19:14:00,413 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 413 transitions. Word has length 26 [2021-10-21 19:14:00,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:14:00,414 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 413 transitions. [2021-10-21 19:14:00,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:00,415 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 413 transitions. [2021-10-21 19:14:00,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-21 19:14:00,416 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:14:00,416 INFO L512 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] [2021-10-21 19:14:00,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:14:00,417 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:14:00,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:00,417 INFO L82 PathProgramCache]: Analyzing trace with hash 755236346, now seen corresponding path program 1 times [2021-10-21 19:14:00,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:00,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87576139] [2021-10-21 19:14:00,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:00,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:00,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:14:00,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87576139] [2021-10-21 19:14:00,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87576139] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:00,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:00,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:14:00,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150301158] [2021-10-21 19:14:00,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:14:00,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:14:00,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:14:00,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:14:00,486 INFO L87 Difference]: Start difference. First operand 298 states and 413 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:00,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:14:00,518 INFO L93 Difference]: Finished difference Result 429 states and 595 transitions. [2021-10-21 19:14:00,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:14:00,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-21 19:14:00,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:14:00,524 INFO L225 Difference]: With dead ends: 429 [2021-10-21 19:14:00,524 INFO L226 Difference]: Without dead ends: 354 [2021-10-21 19:14:00,525 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:14:00,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-10-21 19:14:00,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 312. [2021-10-21 19:14:00,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 306 states have (on average 1.3823529411764706) internal successors, (423), 311 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:00,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 423 transitions. [2021-10-21 19:14:00,542 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 423 transitions. Word has length 30 [2021-10-21 19:14:00,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:14:00,543 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 423 transitions. [2021-10-21 19:14:00,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:00,544 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 423 transitions. [2021-10-21 19:14:00,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-21 19:14:00,547 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:14:00,547 INFO L512 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] [2021-10-21 19:14:00,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:14:00,548 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:14:00,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:00,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1878814160, now seen corresponding path program 1 times [2021-10-21 19:14:00,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:00,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851294334] [2021-10-21 19:14:00,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:00,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:00,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:00,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:14:00,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851294334] [2021-10-21 19:14:00,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851294334] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:00,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:00,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:14:00,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289397062] [2021-10-21 19:14:00,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:14:00,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:14:00,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:14:00,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:14:00,673 INFO L87 Difference]: Start difference. First operand 312 states and 423 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:00,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:14:00,968 INFO L93 Difference]: Finished difference Result 813 states and 1106 transitions. [2021-10-21 19:14:00,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:14:00,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-21 19:14:00,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:14:00,975 INFO L225 Difference]: With dead ends: 813 [2021-10-21 19:14:00,975 INFO L226 Difference]: Without dead ends: 704 [2021-10-21 19:14:00,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.7ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:14:00,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-10-21 19:14:00,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 450. [2021-10-21 19:14:01,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 444 states have (on average 1.382882882882883) internal successors, (614), 449 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:01,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 614 transitions. [2021-10-21 19:14:01,003 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 614 transitions. Word has length 30 [2021-10-21 19:14:01,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:14:01,003 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 614 transitions. [2021-10-21 19:14:01,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:01,004 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 614 transitions. [2021-10-21 19:14:01,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-21 19:14:01,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:14:01,005 INFO L512 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] [2021-10-21 19:14:01,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:14:01,005 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:14:01,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:01,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1878873742, now seen corresponding path program 1 times [2021-10-21 19:14:01,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:14:01,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313481418] [2021-10-21 19:14:01,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:01,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:14:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:14:01,038 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:14:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:14:01,089 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:14:01,090 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:14:01,090 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:14:01,092 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:14:01,093 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:14:01,093 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:14:01,093 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:14:01,093 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:14:01,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:14:01,099 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:14:01,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:14:01 BoogieIcfgContainer [2021-10-21 19:14:01,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:14:01,146 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:14:01,147 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:14:01,147 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:14:01,147 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:13:58" (3/4) ... [2021-10-21 19:14:01,151 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:14:01,152 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:14:01,154 INFO L168 Benchmark]: Toolchain (without parser) took 4088.03 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 56.6 MB in the beginning and 53.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 29.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:14:01,155 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory was 65.0 MB in the beginning and 65.0 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:14:01,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.36 ms. Allocated memory is still 92.3 MB. Free memory was 56.3 MB in the beginning and 62.4 MB in the end (delta: -6.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:14:01,159 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.80 ms. Allocated memory is still 92.3 MB. Free memory was 62.4 MB in the beginning and 60.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:14:01,162 INFO L168 Benchmark]: Boogie Preprocessor took 34.61 ms. Allocated memory is still 92.3 MB. Free memory was 60.1 MB in the beginning and 58.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:14:01,165 INFO L168 Benchmark]: RCFGBuilder took 593.19 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 58.3 MB in the beginning and 92.4 MB in the end (delta: -34.2 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:14:01,165 INFO L168 Benchmark]: TraceAbstraction took 3033.59 ms. Allocated memory is still 117.4 MB. Free memory was 91.9 MB in the beginning and 54.4 MB in the end (delta: 37.5 MB). Peak memory consumption was 37.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:14:01,165 INFO L168 Benchmark]: Witness Printer took 6.24 ms. Allocated memory is still 117.4 MB. Free memory is still 53.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:14:01,168 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory was 65.0 MB in the beginning and 65.0 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 347.36 ms. Allocated memory is still 92.3 MB. Free memory was 56.3 MB in the beginning and 62.4 MB in the end (delta: -6.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.80 ms. Allocated memory is still 92.3 MB. Free memory was 62.4 MB in the beginning and 60.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.61 ms. Allocated memory is still 92.3 MB. Free memory was 60.1 MB in the beginning and 58.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 593.19 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 58.3 MB in the beginning and 92.4 MB in the end (delta: -34.2 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3033.59 ms. Allocated memory is still 117.4 MB. Free memory was 91.9 MB in the beginning and 54.4 MB in the end (delta: 37.5 MB). Peak memory consumption was 37.2 MB. Max. memory is 16.1 GB. * Witness Printer took 6.24 ms. Allocated memory is still 117.4 MB. Free memory is still 53.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is 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) [L9] reach_error() - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 96 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 2924.7ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 26.5ms, AutomataDifference: 1357.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1043 SDtfs, 2459 SDslu, 3243 SDs, 0 SdLazy, 597 SolverSat, 71 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 584.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 331.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=450occurred in iteration=7, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 231.3ms AutomataMinimizationTime, 7 MinimizatonAttempts, 765 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 34.4ms SsaConstructionTime, 364.4ms SatisfiabilityAnalysisTime, 633.1ms InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 417 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 [2021-10-21 19:14:01,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:14:03,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:14:03,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:14:03,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:14:03,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:14:03,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:14:03,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:14:03,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:14:03,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:14:03,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:14:03,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:14:03,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:14:03,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:14:03,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:14:03,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:14:03,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:14:03,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:14:03,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:14:03,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:14:03,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:14:03,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:14:03,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:14:03,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:14:03,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:14:03,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:14:03,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:14:03,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:14:03,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:14:03,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:14:03,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:14:03,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:14:03,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:14:03,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:14:03,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:14:03,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:14:03,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:14:03,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:14:03,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:14:03,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:14:03,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:14:03,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:14:03,676 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 19:14:03,723 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:14:03,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:14:03,724 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:14:03,724 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:14:03,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:14:03,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:14:03,727 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:14:03,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:14:03,728 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:14:03,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:14:03,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:14:03,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:14:03,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:14:03,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:14:03,730 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 19:14:03,730 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 19:14:03,730 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:14:03,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:14:03,731 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:14:03,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:14:03,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:14:03,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:14:03,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:14:03,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:14:03,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:14:03,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:14:03,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:14:03,732 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 19:14:03,733 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 19:14:03,733 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:14:03,733 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:14:03,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:14:03,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:14:03,734 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 19:14:03,734 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_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5977619415d9c54d55bb3de80e610b570f29e97a95a856bc3f620bebee04c8a4 [2021-10-21 19:14:04,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:14:04,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:14:04,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:14:04,169 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:14:04,170 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:14:04,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-10-21 19:14:04,240 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/data/82cf1d952/404e3189109c4283ae85d0f9e38a130d/FLAGf249b1ed7 [2021-10-21 19:14:04,884 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:14:04,885 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-10-21 19:14:04,898 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/data/82cf1d952/404e3189109c4283ae85d0f9e38a130d/FLAGf249b1ed7 [2021-10-21 19:14:05,211 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/data/82cf1d952/404e3189109c4283ae85d0f9e38a130d [2021-10-21 19:14:05,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:14:05,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:14:05,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:14:05,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:14:05,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:14:05,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@338c45a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05, skipping insertion in model container [2021-10-21 19:14:05,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:14:05,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:14:05,401 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-10-21 19:14:05,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:14:05,525 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:14:05,546 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-10-21 19:14:05,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:14:05,592 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:14:05,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05 WrapperNode [2021-10-21 19:14:05,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:14:05,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:14:05,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:14:05,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:14:05,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:14:05,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:14:05,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:14:05,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:14:05,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:14:05,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:14:05,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:14:05,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:14:05,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05" (1/1) ... [2021-10-21 19:14:05,715 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:14:05,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:14:05,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:14:05,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:14:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 19:14:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:14:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:14:05,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:14:06,299 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:14:06,299 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-21 19:14:06,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:14:06 BoogieIcfgContainer [2021-10-21 19:14:06,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:14:06,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:14:06,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:14:06,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:14:06,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:14:05" (1/3) ... [2021-10-21 19:14:06,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55735273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:14:06, skipping insertion in model container [2021-10-21 19:14:06,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:14:05" (2/3) ... [2021-10-21 19:14:06,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55735273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:14:06, skipping insertion in model container [2021-10-21 19:14:06,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:14:06" (3/3) ... [2021-10-21 19:14:06,309 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2021-10-21 19:14:06,316 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:14:06,316 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-21 19:14:06,372 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:14:06,381 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:14:06,381 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-21 19:14:06,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 89 states have (on average 1.7303370786516854) internal successors, (154), 95 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:06,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 19:14:06,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:14:06,408 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:14:06,408 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:14:06,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:06,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1626643796, now seen corresponding path program 1 times [2021-10-21 19:14:06,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:14:06,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617921700] [2021-10-21 19:14:06,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:06,427 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:14:06,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:14:06,430 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:14:06,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 19:14:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:06,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:14:06,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:14:06,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:06,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:14:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:06,885 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:14:06,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617921700] [2021-10-21 19:14:06,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617921700] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:06,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:06,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 19:14:06,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517576974] [2021-10-21 19:14:06,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:14:06,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:14:06,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:14:06,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:14:06,918 INFO L87 Difference]: Start difference. First operand has 96 states, 89 states have (on average 1.7303370786516854) internal successors, (154), 95 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:07,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:14:07,188 INFO L93 Difference]: Finished difference Result 397 states and 607 transitions. [2021-10-21 19:14:07,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:14:07,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-21 19:14:07,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:14:07,213 INFO L225 Difference]: With dead ends: 397 [2021-10-21 19:14:07,214 INFO L226 Difference]: Without dead ends: 295 [2021-10-21 19:14:07,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:14:07,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-10-21 19:14:07,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 120. [2021-10-21 19:14:07,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 114 states have (on average 1.5087719298245614) internal successors, (172), 119 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:07,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 172 transitions. [2021-10-21 19:14:07,294 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 172 transitions. Word has length 18 [2021-10-21 19:14:07,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:14:07,295 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 172 transitions. [2021-10-21 19:14:07,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:07,295 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 172 transitions. [2021-10-21 19:14:07,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:14:07,297 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:14:07,298 INFO L512 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] [2021-10-21 19:14:07,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:14:07,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:14:07,516 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:14:07,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:07,517 INFO L82 PathProgramCache]: Analyzing trace with hash -908455500, now seen corresponding path program 1 times [2021-10-21 19:14:07,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:14:07,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506063745] [2021-10-21 19:14:07,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:07,518 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:14:07,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:14:07,520 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:14:07,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 19:14:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:07,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:14:07,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:14:07,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:07,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:14:07,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:07,799 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:14:07,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506063745] [2021-10-21 19:14:07,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506063745] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:07,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:07,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 19:14:07,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036490366] [2021-10-21 19:14:07,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:14:07,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:14:07,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:14:07,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:14:07,806 INFO L87 Difference]: Start difference. First operand 120 states and 172 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:07,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:14:07,993 INFO L93 Difference]: Finished difference Result 394 states and 543 transitions. [2021-10-21 19:14:07,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:14:07,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-21 19:14:07,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:14:07,998 INFO L225 Difference]: With dead ends: 394 [2021-10-21 19:14:07,999 INFO L226 Difference]: Without dead ends: 337 [2021-10-21 19:14:08,000 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 35.2ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:14:08,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-10-21 19:14:08,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 186. [2021-10-21 19:14:08,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 180 states have (on average 1.4944444444444445) internal successors, (269), 185 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:08,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 269 transitions. [2021-10-21 19:14:08,017 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 269 transitions. Word has length 22 [2021-10-21 19:14:08,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:14:08,018 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 269 transitions. [2021-10-21 19:14:08,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:08,018 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 269 transitions. [2021-10-21 19:14:08,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:14:08,020 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:14:08,020 INFO L512 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] [2021-10-21 19:14:08,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:14:08,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:14:08,232 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:14:08,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:08,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1301482510, now seen corresponding path program 1 times [2021-10-21 19:14:08,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:14:08,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751812715] [2021-10-21 19:14:08,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:08,234 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:14:08,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:14:08,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:14:08,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 19:14:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:08,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:14:08,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:14:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:08,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:14:08,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:08,466 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:14:08,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751812715] [2021-10-21 19:14:08,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751812715] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:08,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:08,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 19:14:08,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13564272] [2021-10-21 19:14:08,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:14:08,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:14:08,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:14:08,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:14:08,469 INFO L87 Difference]: Start difference. First operand 186 states and 269 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:08,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:14:08,584 INFO L93 Difference]: Finished difference Result 378 states and 535 transitions. [2021-10-21 19:14:08,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:14:08,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-21 19:14:08,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:14:08,587 INFO L225 Difference]: With dead ends: 378 [2021-10-21 19:14:08,587 INFO L226 Difference]: Without dead ends: 295 [2021-10-21 19:14:08,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:14:08,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-10-21 19:14:08,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 278. [2021-10-21 19:14:08,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 272 states have (on average 1.474264705882353) internal successors, (401), 277 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:08,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 401 transitions. [2021-10-21 19:14:08,609 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 401 transitions. Word has length 22 [2021-10-21 19:14:08,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:14:08,610 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 401 transitions. [2021-10-21 19:14:08,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:08,610 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 401 transitions. [2021-10-21 19:14:08,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:14:08,612 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:14:08,612 INFO L512 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] [2021-10-21 19:14:08,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:14:08,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:14:08,830 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:14:08,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:08,831 INFO L82 PathProgramCache]: Analyzing trace with hash 473524852, now seen corresponding path program 1 times [2021-10-21 19:14:08,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:14:08,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886134727] [2021-10-21 19:14:08,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:08,832 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:14:08,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:14:08,833 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:14:08,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 19:14:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:08,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:14:08,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:14:09,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:09,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:14:09,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:09,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:14:09,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886134727] [2021-10-21 19:14:09,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886134727] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:09,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:09,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-21 19:14:09,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18647394] [2021-10-21 19:14:09,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:14:09,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:14:09,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:14:09,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:14:09,102 INFO L87 Difference]: Start difference. First operand 278 states and 401 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:09,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:14:09,251 INFO L93 Difference]: Finished difference Result 395 states and 553 transitions. [2021-10-21 19:14:09,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:14:09,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-21 19:14:09,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:14:09,254 INFO L225 Difference]: With dead ends: 395 [2021-10-21 19:14:09,254 INFO L226 Difference]: Without dead ends: 318 [2021-10-21 19:14:09,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.7ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:14:09,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-10-21 19:14:09,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 258. [2021-10-21 19:14:09,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 252 states have (on average 1.4484126984126984) internal successors, (365), 257 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:09,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 365 transitions. [2021-10-21 19:14:09,269 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 365 transitions. Word has length 22 [2021-10-21 19:14:09,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:14:09,270 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 365 transitions. [2021-10-21 19:14:09,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:09,270 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 365 transitions. [2021-10-21 19:14:09,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 19:14:09,272 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:14:09,272 INFO L512 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] [2021-10-21 19:14:09,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:14:09,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:14:09,488 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:14:09,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:09,488 INFO L82 PathProgramCache]: Analyzing trace with hash 177561437, now seen corresponding path program 1 times [2021-10-21 19:14:09,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:14:09,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548932418] [2021-10-21 19:14:09,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:09,489 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:14:09,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:14:09,490 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:14:09,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 19:14:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:09,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:14:09,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:14:09,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:09,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:14:09,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:09,832 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:14:09,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548932418] [2021-10-21 19:14:09,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548932418] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:09,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:09,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-21 19:14:09,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746596963] [2021-10-21 19:14:09,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:14:09,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:14:09,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:14:09,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:14:09,840 INFO L87 Difference]: Start difference. First operand 258 states and 365 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:10,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:14:10,126 INFO L93 Difference]: Finished difference Result 402 states and 541 transitions. [2021-10-21 19:14:10,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:14:10,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-21 19:14:10,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:14:10,133 INFO L225 Difference]: With dead ends: 402 [2021-10-21 19:14:10,133 INFO L226 Difference]: Without dead ends: 354 [2021-10-21 19:14:10,134 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 110.2ms TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:14:10,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-10-21 19:14:10,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 248. [2021-10-21 19:14:10,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 242 states have (on average 1.43801652892562) internal successors, (348), 247 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:10,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 348 transitions. [2021-10-21 19:14:10,152 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 348 transitions. Word has length 26 [2021-10-21 19:14:10,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:14:10,152 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 348 transitions. [2021-10-21 19:14:10,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:10,153 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 348 transitions. [2021-10-21 19:14:10,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-21 19:14:10,157 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:14:10,158 INFO L512 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] [2021-10-21 19:14:10,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:14:10,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:14:10,369 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:14:10,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:10,370 INFO L82 PathProgramCache]: Analyzing trace with hash 755236346, now seen corresponding path program 1 times [2021-10-21 19:14:10,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:14:10,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668462629] [2021-10-21 19:14:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:10,370 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:14:10,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:14:10,371 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:14:10,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-21 19:14:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:10,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:14:10,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:14:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:10,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:14:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:10,648 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:14:10,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668462629] [2021-10-21 19:14:10,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668462629] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:10,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:10,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-21 19:14:10,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518242038] [2021-10-21 19:14:10,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:14:10,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:14:10,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:14:10,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:14:10,652 INFO L87 Difference]: Start difference. First operand 248 states and 348 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:10,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:14:10,710 INFO L93 Difference]: Finished difference Result 456 states and 635 transitions. [2021-10-21 19:14:10,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:14:10,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-21 19:14:10,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:14:10,713 INFO L225 Difference]: With dead ends: 456 [2021-10-21 19:14:10,713 INFO L226 Difference]: Without dead ends: 381 [2021-10-21 19:14:10,715 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 19.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:14:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-10-21 19:14:10,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 310. [2021-10-21 19:14:10,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 304 states have (on average 1.3914473684210527) internal successors, (423), 309 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:10,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 423 transitions. [2021-10-21 19:14:10,732 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 423 transitions. Word has length 30 [2021-10-21 19:14:10,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:14:10,733 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 423 transitions. [2021-10-21 19:14:10,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 423 transitions. [2021-10-21 19:14:10,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-21 19:14:10,735 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:14:10,735 INFO L512 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] [2021-10-21 19:14:10,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:14:10,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:14:10,949 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:14:10,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:10,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1878814160, now seen corresponding path program 1 times [2021-10-21 19:14:10,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:14:10,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980122835] [2021-10-21 19:14:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:10,950 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:14:10,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:14:10,951 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:14:10,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-21 19:14:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:11,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 19:14:11,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:14:11,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:11,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:14:11,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:11,294 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:14:11,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980122835] [2021-10-21 19:14:11,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980122835] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:11,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:11,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2021-10-21 19:14:11,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240701668] [2021-10-21 19:14:11,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:14:11,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:14:11,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:14:11,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:14:11,296 INFO L87 Difference]: Start difference. First operand 310 states and 423 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:11,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:14:11,852 INFO L93 Difference]: Finished difference Result 912 states and 1264 transitions. [2021-10-21 19:14:11,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:14:11,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-21 19:14:11,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:14:11,857 INFO L225 Difference]: With dead ends: 912 [2021-10-21 19:14:11,857 INFO L226 Difference]: Without dead ends: 805 [2021-10-21 19:14:11,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 165.4ms TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:14:11,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-10-21 19:14:11,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 446. [2021-10-21 19:14:11,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 441 states have (on average 1.3786848072562359) internal successors, (608), 445 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:11,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 608 transitions. [2021-10-21 19:14:11,886 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 608 transitions. Word has length 30 [2021-10-21 19:14:11,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:14:11,886 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 608 transitions. [2021-10-21 19:14:11,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:11,887 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 608 transitions. [2021-10-21 19:14:11,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-21 19:14:11,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:14:11,888 INFO L512 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] [2021-10-21 19:14:11,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:14:12,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:14:12,100 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:14:12,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:12,101 INFO L82 PathProgramCache]: Analyzing trace with hash 2002224973, now seen corresponding path program 1 times [2021-10-21 19:14:12,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:14:12,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786182078] [2021-10-21 19:14:12,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:12,104 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:14:12,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:14:12,105 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:14:12,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-21 19:14:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:12,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:14:12,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:14:12,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:12,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:14:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:12,587 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:14:12,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786182078] [2021-10-21 19:14:12,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786182078] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:12,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:12,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-10-21 19:14:12,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017700843] [2021-10-21 19:14:12,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 19:14:12,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:14:12,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:14:12,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:14:12,589 INFO L87 Difference]: Start difference. First operand 446 states and 608 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:13,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:14:13,389 INFO L93 Difference]: Finished difference Result 746 states and 1004 transitions. [2021-10-21 19:14:13,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-21 19:14:13,390 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-21 19:14:13,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:14:13,394 INFO L225 Difference]: With dead ends: 746 [2021-10-21 19:14:13,394 INFO L226 Difference]: Without dead ends: 705 [2021-10-21 19:14:13,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 386.3ms TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2021-10-21 19:14:13,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-10-21 19:14:13,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 444. [2021-10-21 19:14:13,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 439 states have (on average 1.3804100227790432) internal successors, (606), 443 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:13,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 606 transitions. [2021-10-21 19:14:13,440 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 606 transitions. Word has length 31 [2021-10-21 19:14:13,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:14:13,440 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 606 transitions. [2021-10-21 19:14:13,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:13,441 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 606 transitions. [2021-10-21 19:14:13,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-21 19:14:13,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:14:13,442 INFO L512 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] [2021-10-21 19:14:13,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-21 19:14:13,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:14:13,650 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:14:13,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:13,650 INFO L82 PathProgramCache]: Analyzing trace with hash 2059483275, now seen corresponding path program 1 times [2021-10-21 19:14:13,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:14:13,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322595197] [2021-10-21 19:14:13,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:13,651 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:14:13,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:14:13,652 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:14:13,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-21 19:14:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:13,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:14:13,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:14:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:13,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:14:13,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:13,992 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:14:13,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322595197] [2021-10-21 19:14:13,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322595197] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:13,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:13,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-21 19:14:13,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066477611] [2021-10-21 19:14:13,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:14:13,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:14:13,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:14:13,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:14:13,995 INFO L87 Difference]: Start difference. First operand 444 states and 606 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:14,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:14:14,076 INFO L93 Difference]: Finished difference Result 501 states and 681 transitions. [2021-10-21 19:14:14,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:14:14,076 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-21 19:14:14,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:14:14,079 INFO L225 Difference]: With dead ends: 501 [2021-10-21 19:14:14,079 INFO L226 Difference]: Without dead ends: 496 [2021-10-21 19:14:14,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 27.1ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:14:14,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-10-21 19:14:14,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 444. [2021-10-21 19:14:14,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 439 states have (on average 1.3690205011389522) internal successors, (601), 443 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:14,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 601 transitions. [2021-10-21 19:14:14,113 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 601 transitions. Word has length 31 [2021-10-21 19:14:14,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:14:14,114 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 601 transitions. [2021-10-21 19:14:14,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:14,114 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 601 transitions. [2021-10-21 19:14:14,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 19:14:14,115 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:14:14,116 INFO L512 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] [2021-10-21 19:14:14,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:14:14,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:14:14,327 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:14:14,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:14,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1226989779, now seen corresponding path program 1 times [2021-10-21 19:14:14,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:14:14,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211383111] [2021-10-21 19:14:14,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:14,328 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:14:14,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:14:14,329 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:14:14,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-21 19:14:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:14:14,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:14:14,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:14:14,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:14,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:14:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:14:14,705 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:14:14,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211383111] [2021-10-21 19:14:14,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211383111] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:14:14,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:14:14,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-21 19:14:14,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534339619] [2021-10-21 19:14:14,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:14:14,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:14:14,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:14:14,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:14:14,707 INFO L87 Difference]: Start difference. First operand 444 states and 601 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:14,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:14:14,797 INFO L93 Difference]: Finished difference Result 901 states and 1199 transitions. [2021-10-21 19:14:14,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:14:14,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-21 19:14:14,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:14:14,803 INFO L225 Difference]: With dead ends: 901 [2021-10-21 19:14:14,803 INFO L226 Difference]: Without dead ends: 842 [2021-10-21 19:14:14,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 19.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:14:14,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-10-21 19:14:14,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 476. [2021-10-21 19:14:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 471 states have (on average 1.3715498938428874) internal successors, (646), 475 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 646 transitions. [2021-10-21 19:14:14,848 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 646 transitions. Word has length 32 [2021-10-21 19:14:14,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:14:14,849 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 646 transitions. [2021-10-21 19:14:14,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:14:14,849 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 646 transitions. [2021-10-21 19:14:14,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 19:14:14,850 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:14:14,850 INFO L512 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] [2021-10-21 19:14:14,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:14:15,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:14:15,062 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:14:15,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:14:15,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1711564241, now seen corresponding path program 1 times [2021-10-21 19:14:15,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:14:15,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635267755] [2021-10-21 19:14:15,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:14:15,063 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:14:15,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:14:15,064 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:14:15,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-21 19:14:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:14:15,221 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:14:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:14:15,312 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-21 19:14:15,312 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:14:15,313 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:14:15,315 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:14:15,315 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:14:15,315 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:14:15,316 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:14:15,316 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:14:15,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:14:15,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:14:15,533 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:14:15,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:14:15 BoogieIcfgContainer [2021-10-21 19:14:15,587 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:14:15,588 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:14:15,588 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:14:15,588 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:14:15,589 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:14:06" (3/4) ... [2021-10-21 19:14:15,590 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 19:14:15,657 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:14:15,657 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:14:15,658 INFO L168 Benchmark]: Toolchain (without parser) took 10442.65 ms. Allocated memory was 86.0 MB in the beginning and 123.7 MB in the end (delta: 37.7 MB). Free memory was 65.9 MB in the beginning and 39.2 MB in the end (delta: 26.6 MB). Peak memory consumption was 65.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:14:15,659 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 35.6 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:14:15,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.79 ms. Allocated memory is still 86.0 MB. Free memory was 65.7 MB in the beginning and 66.8 MB in the end (delta: -1.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:14:15,660 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.34 ms. Allocated memory is still 86.0 MB. Free memory was 66.8 MB in the beginning and 64.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:14:15,661 INFO L168 Benchmark]: Boogie Preprocessor took 53.58 ms. Allocated memory is still 86.0 MB. Free memory was 64.4 MB in the beginning and 62.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:14:15,661 INFO L168 Benchmark]: RCFGBuilder took 599.30 ms. Allocated memory is still 86.0 MB. Free memory was 62.7 MB in the beginning and 45.2 MB in the end (delta: 17.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:14:15,662 INFO L168 Benchmark]: TraceAbstraction took 9284.40 ms. Allocated memory was 86.0 MB in the beginning and 123.7 MB in the end (delta: 37.7 MB). Free memory was 44.9 MB in the beginning and 43.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 41.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:14:15,662 INFO L168 Benchmark]: Witness Printer took 69.19 ms. Allocated memory is still 123.7 MB. Free memory was 43.4 MB in the beginning and 39.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:14:15,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 35.6 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 376.79 ms. Allocated memory is still 86.0 MB. Free memory was 65.7 MB in the beginning and 66.8 MB in the end (delta: -1.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.34 ms. Allocated memory is still 86.0 MB. Free memory was 66.8 MB in the beginning and 64.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.58 ms. Allocated memory is still 86.0 MB. Free memory was 64.4 MB in the beginning and 62.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 599.30 ms. Allocated memory is still 86.0 MB. Free memory was 62.7 MB in the beginning and 45.2 MB in the end (delta: 17.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9284.40 ms. Allocated memory was 86.0 MB in the beginning and 123.7 MB in the end (delta: 37.7 MB). Free memory was 44.9 MB in the beginning and 43.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 41.6 MB. Max. memory is 16.1 GB. * Witness Printer took 69.19 ms. Allocated memory is still 123.7 MB. Free memory was 43.4 MB in the beginning and 39.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 9]: a call to reach_error is reachable a call to reach_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) [L9] reach_error() - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 96 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 9161.2ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 29.5ms, AutomataDifference: 2703.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1434 SDtfs, 3939 SDslu, 5495 SDs, 0 SdLazy, 1126 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1186.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 571 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 881.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=476occurred in iteration=10, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 299.4ms AutomataMinimizationTime, 10 MinimizatonAttempts, 1618 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 136.2ms SsaConstructionTime, 352.5ms SatisfiabilityAnalysisTime, 2070.9ms InterpolantComputationTime, 296 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 508 ConstructedInterpolants, 0 QuantifiedInterpolants, 989 SizeOfPredicates, 40 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! [2021-10-21 19:14:15,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2ffa929-c192-45a1-84b4-b7296654dbaf/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...