./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/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_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg --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_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/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_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg --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-b2eff8b [2021-10-28 09:34:10,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:34:10,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:34:10,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:34:10,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:34:10,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:34:10,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:34:10,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:34:10,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:34:10,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:34:10,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:34:10,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:34:10,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:34:10,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:34:10,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:34:10,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:34:10,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:34:10,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:34:10,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:34:10,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:34:10,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:34:10,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:34:10,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:34:10,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:34:10,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:34:10,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:34:10,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:34:10,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:34:10,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:34:10,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:34:10,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:34:10,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:34:10,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:34:10,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:34:10,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:34:10,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:34:10,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:34:10,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:34:10,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:34:10,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:34:10,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:34:10,946 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:34:10,987 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:34:10,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:34:10,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:34:10,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:34:10,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:34:10,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:34:10,998 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:34:10,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:34:10,999 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:34:10,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:34:11,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:34:11,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:34:11,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:34:11,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:34:11,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:34:11,002 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:34:11,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:34:11,002 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:34:11,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:34:11,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:34:11,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:34:11,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:34:11,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:34:11,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:34:11,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:34:11,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:34:11,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:34:11,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:34:11,006 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:34:11,007 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:34:11,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:34:11,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:34:11,008 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_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5977619415d9c54d55bb3de80e610b570f29e97a95a856bc3f620bebee04c8a4 [2021-10-28 09:34:11,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:34:11,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:34:11,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:34:11,322 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:34:11,322 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:34:11,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-10-28 09:34:11,393 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/data/f0871f487/a57408e1689a4854820e85caa79d355c/FLAG76c5e1997 [2021-10-28 09:34:11,840 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:34:11,841 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-10-28 09:34:11,854 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/data/f0871f487/a57408e1689a4854820e85caa79d355c/FLAG76c5e1997 [2021-10-28 09:34:12,206 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/data/f0871f487/a57408e1689a4854820e85caa79d355c [2021-10-28 09:34:12,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:34:12,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:34:12,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:34:12,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:34:12,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:34:12,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:34:12" (1/1) ... [2021-10-28 09:34:12,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@491e8b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:12, skipping insertion in model container [2021-10-28 09:34:12,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:34:12" (1/1) ... [2021-10-28 09:34:12,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:34:12,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:34:12,409 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_22fb094a-84b0-49ed-964c-af2883fbbde2/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-10-28 09:34:12,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:34:12,470 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:34:12,481 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_22fb094a-84b0-49ed-964c-af2883fbbde2/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-10-28 09:34:12,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:34:12,528 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:34:12,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:12 WrapperNode [2021-10-28 09:34:12,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:34:12,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:34:12,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:34:12,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:34:12,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:12" (1/1) ... [2021-10-28 09:34:12,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:12" (1/1) ... [2021-10-28 09:34:12,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:34:12,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:34:12,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:34:12,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:34:12,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:12" (1/1) ... [2021-10-28 09:34:12,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:12" (1/1) ... [2021-10-28 09:34:12,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:12" (1/1) ... [2021-10-28 09:34:12,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:12" (1/1) ... [2021-10-28 09:34:12,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:12" (1/1) ... [2021-10-28 09:34:12,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:12" (1/1) ... [2021-10-28 09:34:12,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:12" (1/1) ... [2021-10-28 09:34:12,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:34:12,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:34:12,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:34:12,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:34:12,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:12" (1/1) ... [2021-10-28 09:34:12,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:34:12,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:12,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:34:12,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:34:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:34:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:34:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:34:12,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:34:13,142 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:34:13,142 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-28 09:34:13,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:34:13 BoogieIcfgContainer [2021-10-28 09:34:13,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:34:13,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:34:13,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:34:13,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:34:13,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:34:12" (1/3) ... [2021-10-28 09:34:13,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52abb762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:34:13, skipping insertion in model container [2021-10-28 09:34:13,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:12" (2/3) ... [2021-10-28 09:34:13,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52abb762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:34:13, skipping insertion in model container [2021-10-28 09:34:13,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:34:13" (3/3) ... [2021-10-28 09:34:13,153 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2021-10-28 09:34:13,158 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:34:13,158 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-28 09:34:13,197 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:34:13,202 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 [2021-10-28 09:34:13,202 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-28 09:34:13,226 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) [2021-10-28 09:34:13,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:34:13,232 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:13,232 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:13,233 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)] === [2021-10-28 09:34:13,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:13,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1626643796, now seen corresponding path program 1 times [2021-10-28 09:34:13,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:13,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361275471] [2021-10-28 09:34:13,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:13,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:13,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:13,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:13,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361275471] [2021-10-28 09:34:13,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361275471] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:13,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:13,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:34:13,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948423399] [2021-10-28 09:34:13,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:34:13,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:13,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:34:13,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:34:13,633 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) [2021-10-28 09:34:14,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:14,088 INFO L93 Difference]: Finished difference Result 458 states and 692 transitions. [2021-10-28 09:34:14,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:34:14,098 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 [2021-10-28 09:34:14,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:14,116 INFO L225 Difference]: With dead ends: 458 [2021-10-28 09:34:14,116 INFO L226 Difference]: Without dead ends: 348 [2021-10-28 09:34:14,121 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:34:14,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-10-28 09:34:14,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 142. [2021-10-28 09:34:14,204 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) [2021-10-28 09:34:14,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 206 transitions. [2021-10-28 09:34:14,207 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 206 transitions. Word has length 18 [2021-10-28 09:34:14,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:14,208 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 206 transitions. [2021-10-28 09:34:14,208 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) [2021-10-28 09:34:14,208 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 206 transitions. [2021-10-28 09:34:14,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:34:14,210 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:14,210 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:14,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:34:14,211 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)] === [2021-10-28 09:34:14,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:14,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1626703378, now seen corresponding path program 1 times [2021-10-28 09:34:14,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:14,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032537339] [2021-10-28 09:34:14,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:14,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:14,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:14,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032537339] [2021-10-28 09:34:14,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032537339] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:14,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:14,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:34:14,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212550507] [2021-10-28 09:34:14,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:34:14,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:14,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:34:14,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:34:14,434 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) [2021-10-28 09:34:14,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:14,582 INFO L93 Difference]: Finished difference Result 299 states and 427 transitions. [2021-10-28 09:34:14,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:34:14,583 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 [2021-10-28 09:34:14,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:14,588 INFO L225 Difference]: With dead ends: 299 [2021-10-28 09:34:14,588 INFO L226 Difference]: Without dead ends: 215 [2021-10-28 09:34:14,589 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:34:14,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-10-28 09:34:14,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 202. [2021-10-28 09:34:14,617 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) [2021-10-28 09:34:14,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 289 transitions. [2021-10-28 09:34:14,619 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 289 transitions. Word has length 18 [2021-10-28 09:34:14,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:14,619 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 289 transitions. [2021-10-28 09:34:14,619 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) [2021-10-28 09:34:14,620 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 289 transitions. [2021-10-28 09:34:14,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 09:34:14,621 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:14,622 INFO L513 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] [2021-10-28 09:34:14,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:34:14,623 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)] === [2021-10-28 09:34:14,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:14,625 INFO L85 PathProgramCache]: Analyzing trace with hash 442130173, now seen corresponding path program 1 times [2021-10-28 09:34:14,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:14,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391309292] [2021-10-28 09:34:14,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:14,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:14,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:14,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:14,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391309292] [2021-10-28 09:34:14,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391309292] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:14,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:14,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:34:14,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063900565] [2021-10-28 09:34:14,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:34:14,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:14,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:34:14,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:34:14,784 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) [2021-10-28 09:34:14,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:15,000 INFO L93 Difference]: Finished difference Result 315 states and 421 transitions. [2021-10-28 09:34:15,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:34:15,000 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 [2021-10-28 09:34:15,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:15,003 INFO L225 Difference]: With dead ends: 315 [2021-10-28 09:34:15,003 INFO L226 Difference]: Without dead ends: 267 [2021-10-28 09:34:15,005 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:34:15,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-10-28 09:34:15,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 191. [2021-10-28 09:34:15,033 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) [2021-10-28 09:34:15,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 271 transitions. [2021-10-28 09:34:15,035 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 271 transitions. Word has length 22 [2021-10-28 09:34:15,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:15,035 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 271 transitions. [2021-10-28 09:34:15,035 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) [2021-10-28 09:34:15,036 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 271 transitions. [2021-10-28 09:34:15,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 09:34:15,042 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:15,043 INFO L513 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] [2021-10-28 09:34:15,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:34:15,043 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)] === [2021-10-28 09:34:15,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:15,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1605480230, now seen corresponding path program 1 times [2021-10-28 09:34:15,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:15,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450718973] [2021-10-28 09:34:15,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:15,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:15,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:15,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450718973] [2021-10-28 09:34:15,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450718973] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:15,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:15,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:34:15,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329217211] [2021-10-28 09:34:15,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:34:15,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:15,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:34:15,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:34:15,109 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) [2021-10-28 09:34:15,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:15,128 INFO L93 Difference]: Finished difference Result 345 states and 487 transitions. [2021-10-28 09:34:15,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:34:15,129 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 [2021-10-28 09:34:15,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:15,131 INFO L225 Difference]: With dead ends: 345 [2021-10-28 09:34:15,131 INFO L226 Difference]: Without dead ends: 270 [2021-10-28 09:34:15,132 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:34:15,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-10-28 09:34:15,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 241. [2021-10-28 09:34:15,144 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) [2021-10-28 09:34:15,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 336 transitions. [2021-10-28 09:34:15,146 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 336 transitions. Word has length 26 [2021-10-28 09:34:15,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:15,146 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 336 transitions. [2021-10-28 09:34:15,147 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) [2021-10-28 09:34:15,147 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 336 transitions. [2021-10-28 09:34:15,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 09:34:15,148 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:15,148 INFO L513 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] [2021-10-28 09:34:15,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:34:15,149 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)] === [2021-10-28 09:34:15,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:15,149 INFO L85 PathProgramCache]: Analyzing trace with hash -855546000, now seen corresponding path program 1 times [2021-10-28 09:34:15,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:15,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823912637] [2021-10-28 09:34:15,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:15,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:15,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:15,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:15,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823912637] [2021-10-28 09:34:15,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823912637] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:15,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:15,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:34:15,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69886146] [2021-10-28 09:34:15,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:34:15,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:15,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:34:15,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:34:15,236 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) [2021-10-28 09:34:15,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:15,335 INFO L93 Difference]: Finished difference Result 608 states and 834 transitions. [2021-10-28 09:34:15,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:34:15,335 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 [2021-10-28 09:34:15,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:15,338 INFO L225 Difference]: With dead ends: 608 [2021-10-28 09:34:15,339 INFO L226 Difference]: Without dead ends: 443 [2021-10-28 09:34:15,340 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:34:15,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-10-28 09:34:15,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 298. [2021-10-28 09:34:15,355 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) [2021-10-28 09:34:15,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 413 transitions. [2021-10-28 09:34:15,357 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 413 transitions. Word has length 26 [2021-10-28 09:34:15,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:15,357 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 413 transitions. [2021-10-28 09:34:15,357 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) [2021-10-28 09:34:15,358 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 413 transitions. [2021-10-28 09:34:15,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:34:15,359 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:15,359 INFO L513 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] [2021-10-28 09:34:15,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:34:15,359 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)] === [2021-10-28 09:34:15,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:15,360 INFO L85 PathProgramCache]: Analyzing trace with hash 755236346, now seen corresponding path program 1 times [2021-10-28 09:34:15,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:15,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412323898] [2021-10-28 09:34:15,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:15,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:15,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:15,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:15,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412323898] [2021-10-28 09:34:15,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412323898] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:15,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:15,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:34:15,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340670002] [2021-10-28 09:34:15,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:34:15,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:15,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:34:15,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:34:15,401 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) [2021-10-28 09:34:15,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:15,431 INFO L93 Difference]: Finished difference Result 429 states and 595 transitions. [2021-10-28 09:34:15,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:34:15,432 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 [2021-10-28 09:34:15,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:15,434 INFO L225 Difference]: With dead ends: 429 [2021-10-28 09:34:15,434 INFO L226 Difference]: Without dead ends: 354 [2021-10-28 09:34:15,435 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:34:15,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-10-28 09:34:15,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 312. [2021-10-28 09:34:15,450 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) [2021-10-28 09:34:15,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 423 transitions. [2021-10-28 09:34:15,452 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 423 transitions. Word has length 30 [2021-10-28 09:34:15,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:15,452 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 423 transitions. [2021-10-28 09:34:15,452 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) [2021-10-28 09:34:15,453 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 423 transitions. [2021-10-28 09:34:15,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:34:15,454 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:15,454 INFO L513 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] [2021-10-28 09:34:15,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:34:15,454 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)] === [2021-10-28 09:34:15,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:15,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1878814160, now seen corresponding path program 1 times [2021-10-28 09:34:15,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:15,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016796806] [2021-10-28 09:34:15,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:15,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:15,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:15,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:15,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016796806] [2021-10-28 09:34:15,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016796806] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:15,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:15,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:34:15,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802024241] [2021-10-28 09:34:15,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:34:15,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:15,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:34:15,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:34:15,591 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) [2021-10-28 09:34:15,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:15,874 INFO L93 Difference]: Finished difference Result 813 states and 1106 transitions. [2021-10-28 09:34:15,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:34:15,874 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 [2021-10-28 09:34:15,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:15,880 INFO L225 Difference]: With dead ends: 813 [2021-10-28 09:34:15,880 INFO L226 Difference]: Without dead ends: 704 [2021-10-28 09:34:15,881 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:34:15,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-10-28 09:34:15,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 450. [2021-10-28 09:34:15,908 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) [2021-10-28 09:34:15,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 614 transitions. [2021-10-28 09:34:15,910 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 614 transitions. Word has length 30 [2021-10-28 09:34:15,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:15,911 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 614 transitions. [2021-10-28 09:34:15,911 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) [2021-10-28 09:34:15,912 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 614 transitions. [2021-10-28 09:34:15,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:34:15,913 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:15,913 INFO L513 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] [2021-10-28 09:34:15,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:34:15,914 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)] === [2021-10-28 09:34:15,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:15,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1878873742, now seen corresponding path program 1 times [2021-10-28 09:34:15,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:15,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717038343] [2021-10-28 09:34:15,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:15,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:34:15,986 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:34:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:34:16,045 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:34:16,045 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:34:16,046 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:34:16,048 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:34:16,048 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:34:16,049 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:34:16,049 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:34:16,049 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:34:16,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:34:16,053 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:16,055 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:34:16,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:34:16 BoogieIcfgContainer [2021-10-28 09:34:16,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:34:16,093 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:34:16,093 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:34:16,094 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:34:16,094 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:34:13" (3/4) ... [2021-10-28 09:34:16,097 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:34:16,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:34:16,098 INFO L168 Benchmark]: Toolchain (without parser) took 3888.15 ms. Allocated memory was 109.1 MB in the beginning and 153.1 MB in the end (delta: 44.0 MB). Free memory was 71.4 MB in the beginning and 88.7 MB in the end (delta: -17.4 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:16,099 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 109.1 MB. Free memory is still 88.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:34:16,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.63 ms. Allocated memory is still 109.1 MB. Free memory was 71.1 MB in the beginning and 80.7 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:16,100 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.57 ms. Allocated memory is still 109.1 MB. Free memory was 80.7 MB in the beginning and 78.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:16,100 INFO L168 Benchmark]: Boogie Preprocessor took 51.15 ms. Allocated memory is still 109.1 MB. Free memory was 78.2 MB in the beginning and 76.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:16,101 INFO L168 Benchmark]: RCFGBuilder took 510.77 ms. Allocated memory is still 109.1 MB. Free memory was 76.5 MB in the beginning and 59.3 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:16,102 INFO L168 Benchmark]: TraceAbstraction took 2946.35 ms. Allocated memory was 109.1 MB in the beginning and 153.1 MB in the end (delta: 44.0 MB). Free memory was 58.9 MB in the beginning and 89.8 MB in the end (delta: -30.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:16,102 INFO L168 Benchmark]: Witness Printer took 3.57 ms. Allocated memory is still 153.1 MB. Free memory was 89.8 MB in the beginning and 88.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:34:16,111 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 109.1 MB. Free memory is still 88.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 318.63 ms. Allocated memory is still 109.1 MB. Free memory was 71.1 MB in the beginning and 80.7 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.57 ms. Allocated memory is still 109.1 MB. Free memory was 80.7 MB in the beginning and 78.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.15 ms. Allocated memory is still 109.1 MB. Free memory was 78.2 MB in the beginning and 76.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 510.77 ms. Allocated memory is still 109.1 MB. Free memory was 76.5 MB in the beginning and 59.3 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2946.35 ms. Allocated memory was 109.1 MB in the beginning and 153.1 MB in the end (delta: 44.0 MB). Free memory was 58.9 MB in the beginning and 89.8 MB in the end (delta: -30.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * Witness Printer took 3.57 ms. Allocated memory is still 153.1 MB. Free memory was 89.8 MB in the beginning and 88.7 MB in the end (delta: 1.0 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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: 2.8s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1043 SDtfs, 2459 SDslu, 3243 SDs, 0 SdLazy, 597 SolverSat, 71 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s Time, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 765 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s 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 [2021-10-28 09:34:16,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:34:18,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:34:18,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:34:18,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:34:18,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:34:18,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:34:18,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:34:18,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:34:18,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:34:18,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:34:18,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:34:18,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:34:18,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:34:18,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:34:18,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:34:18,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:34:18,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:34:18,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:34:18,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:34:18,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:34:18,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:34:18,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:34:18,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:34:18,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:34:18,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:34:18,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:34:18,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:34:18,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:34:18,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:34:18,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:34:18,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:34:18,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:34:18,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:34:18,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:34:18,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:34:18,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:34:18,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:34:18,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:34:18,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:34:18,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:34:18,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:34:18,497 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 09:34:18,542 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:34:18,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:34:18,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:34:18,544 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:34:18,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:34:18,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:34:18,546 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:34:18,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:34:18,547 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:34:18,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:34:18,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:34:18,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:34:18,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:34:18,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:34:18,549 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:34:18,549 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:34:18,549 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:34:18,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:34:18,550 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:34:18,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:34:18,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:34:18,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:34:18,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:34:18,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:34:18,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:34:18,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:34:18,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:34:18,552 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:34:18,552 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:34:18,553 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:34:18,553 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:34:18,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:34:18,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:34:18,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:34:18,554 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_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5977619415d9c54d55bb3de80e610b570f29e97a95a856bc3f620bebee04c8a4 [2021-10-28 09:34:18,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:34:18,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:34:18,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:34:18,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:34:18,974 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:34:18,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-10-28 09:34:19,041 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/data/3e05ceee8/cf55bfe74f3f457b95566b048722d10e/FLAGeb7d3751d [2021-10-28 09:34:19,590 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:34:19,591 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-10-28 09:34:19,599 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/data/3e05ceee8/cf55bfe74f3f457b95566b048722d10e/FLAGeb7d3751d [2021-10-28 09:34:19,920 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/data/3e05ceee8/cf55bfe74f3f457b95566b048722d10e [2021-10-28 09:34:19,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:34:19,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:34:19,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:34:19,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:34:19,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:34:19,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:34:19" (1/1) ... [2021-10-28 09:34:19,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f6a650e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:19, skipping insertion in model container [2021-10-28 09:34:19,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:34:19" (1/1) ... [2021-10-28 09:34:19,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:34:20,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:34:20,230 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_22fb094a-84b0-49ed-964c-af2883fbbde2/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-10-28 09:34:20,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:34:20,338 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:34:20,353 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_22fb094a-84b0-49ed-964c-af2883fbbde2/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-10-28 09:34:20,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:34:20,443 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:34:20,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:20 WrapperNode [2021-10-28 09:34:20,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:34:20,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:34:20,446 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:34:20,446 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:34:20,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:20" (1/1) ... [2021-10-28 09:34:20,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:20" (1/1) ... [2021-10-28 09:34:20,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:34:20,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:34:20,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:34:20,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:34:20,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:20" (1/1) ... [2021-10-28 09:34:20,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:20" (1/1) ... [2021-10-28 09:34:20,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:20" (1/1) ... [2021-10-28 09:34:20,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:20" (1/1) ... [2021-10-28 09:34:20,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:20" (1/1) ... [2021-10-28 09:34:20,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:20" (1/1) ... [2021-10-28 09:34:20,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:20" (1/1) ... [2021-10-28 09:34:20,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:34:20,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:34:20,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:34:20,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:34:20,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:20" (1/1) ... [2021-10-28 09:34:20,604 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:34:20,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:20,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:34:20,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:34:20,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:34:20,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:34:20,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:34:20,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:34:21,222 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:34:21,236 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-28 09:34:21,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:34:21 BoogieIcfgContainer [2021-10-28 09:34:21,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:34:21,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:34:21,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:34:21,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:34:21,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:34:19" (1/3) ... [2021-10-28 09:34:21,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bf4dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:34:21, skipping insertion in model container [2021-10-28 09:34:21,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:34:20" (2/3) ... [2021-10-28 09:34:21,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bf4dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:34:21, skipping insertion in model container [2021-10-28 09:34:21,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:34:21" (3/3) ... [2021-10-28 09:34:21,246 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2021-10-28 09:34:21,251 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:34:21,251 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-28 09:34:21,296 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:34:21,302 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 [2021-10-28 09:34:21,302 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-28 09:34:21,318 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) [2021-10-28 09:34:21,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:34:21,324 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:21,324 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:21,325 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)] === [2021-10-28 09:34:21,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:21,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1626643796, now seen corresponding path program 1 times [2021-10-28 09:34:21,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:34:21,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121983747] [2021-10-28 09:34:21,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:21,343 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:34:21,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:34:21,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:34:21,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:34:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:21,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:34:21,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:21,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:21,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:34:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:21,759 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:34:21,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121983747] [2021-10-28 09:34:21,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121983747] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:21,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:21,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 09:34:21,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672547502] [2021-10-28 09:34:21,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:34:21,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:34:21,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:34:21,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:34:21,788 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) [2021-10-28 09:34:22,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:22,052 INFO L93 Difference]: Finished difference Result 397 states and 607 transitions. [2021-10-28 09:34:22,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:34:22,054 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 [2021-10-28 09:34:22,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:22,077 INFO L225 Difference]: With dead ends: 397 [2021-10-28 09:34:22,077 INFO L226 Difference]: Without dead ends: 295 [2021-10-28 09:34:22,080 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:34:22,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-10-28 09:34:22,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 120. [2021-10-28 09:34:22,130 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) [2021-10-28 09:34:22,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 172 transitions. [2021-10-28 09:34:22,135 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 172 transitions. Word has length 18 [2021-10-28 09:34:22,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:22,136 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 172 transitions. [2021-10-28 09:34:22,136 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) [2021-10-28 09:34:22,137 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 172 transitions. [2021-10-28 09:34:22,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 09:34:22,139 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:22,139 INFO L513 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] [2021-10-28 09:34:22,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:22,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:34:22,354 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)] === [2021-10-28 09:34:22,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:22,354 INFO L85 PathProgramCache]: Analyzing trace with hash -908455500, now seen corresponding path program 1 times [2021-10-28 09:34:22,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:34:22,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059257117] [2021-10-28 09:34:22,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:22,356 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:34:22,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:34:22,359 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:34:22,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:34:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:22,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:34:22,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:22,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:22,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:34:22,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:22,603 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:34:22,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059257117] [2021-10-28 09:34:22,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059257117] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:22,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:22,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 09:34:22,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099367473] [2021-10-28 09:34:22,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:34:22,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:34:22,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:34:22,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:34:22,611 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) [2021-10-28 09:34:22,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:22,794 INFO L93 Difference]: Finished difference Result 394 states and 543 transitions. [2021-10-28 09:34:22,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:34:22,797 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 [2021-10-28 09:34:22,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:22,800 INFO L225 Difference]: With dead ends: 394 [2021-10-28 09:34:22,800 INFO L226 Difference]: Without dead ends: 337 [2021-10-28 09:34:22,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:34:22,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-10-28 09:34:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 186. [2021-10-28 09:34:22,841 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) [2021-10-28 09:34:22,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 269 transitions. [2021-10-28 09:34:22,843 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 269 transitions. Word has length 22 [2021-10-28 09:34:22,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:22,843 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 269 transitions. [2021-10-28 09:34:22,844 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) [2021-10-28 09:34:22,844 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 269 transitions. [2021-10-28 09:34:22,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 09:34:22,846 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:22,846 INFO L513 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] [2021-10-28 09:34:22,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:23,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:34:23,060 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)] === [2021-10-28 09:34:23,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:23,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1301482510, now seen corresponding path program 1 times [2021-10-28 09:34:23,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:34:23,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56042625] [2021-10-28 09:34:23,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:23,069 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:34:23,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:34:23,070 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:34:23,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:34:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:23,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:34:23,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:23,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:34:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:23,319 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:34:23,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56042625] [2021-10-28 09:34:23,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56042625] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:23,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:23,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 09:34:23,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304738819] [2021-10-28 09:34:23,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:34:23,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:34:23,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:34:23,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:34:23,323 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) [2021-10-28 09:34:23,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:23,435 INFO L93 Difference]: Finished difference Result 378 states and 535 transitions. [2021-10-28 09:34:23,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:34:23,436 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 [2021-10-28 09:34:23,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:23,438 INFO L225 Difference]: With dead ends: 378 [2021-10-28 09:34:23,438 INFO L226 Difference]: Without dead ends: 295 [2021-10-28 09:34:23,439 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:34:23,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-10-28 09:34:23,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 278. [2021-10-28 09:34:23,455 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) [2021-10-28 09:34:23,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 401 transitions. [2021-10-28 09:34:23,457 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 401 transitions. Word has length 22 [2021-10-28 09:34:23,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:23,457 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 401 transitions. [2021-10-28 09:34:23,457 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) [2021-10-28 09:34:23,458 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 401 transitions. [2021-10-28 09:34:23,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 09:34:23,459 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:23,459 INFO L513 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] [2021-10-28 09:34:23,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:23,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:34:23,671 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)] === [2021-10-28 09:34:23,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:23,672 INFO L85 PathProgramCache]: Analyzing trace with hash 473524852, now seen corresponding path program 1 times [2021-10-28 09:34:23,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:34:23,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047144275] [2021-10-28 09:34:23,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:23,673 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:34:23,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:34:23,674 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:34:23,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:34:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:23,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:34:23,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:23,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:23,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:34:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:23,911 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:34:23,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047144275] [2021-10-28 09:34:23,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047144275] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:23,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:23,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-28 09:34:23,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878848769] [2021-10-28 09:34:23,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:34:23,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:34:23,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:34:23,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:34:23,914 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) [2021-10-28 09:34:24,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:24,054 INFO L93 Difference]: Finished difference Result 395 states and 553 transitions. [2021-10-28 09:34:24,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:34:24,055 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 [2021-10-28 09:34:24,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:24,057 INFO L225 Difference]: With dead ends: 395 [2021-10-28 09:34:24,057 INFO L226 Difference]: Without dead ends: 318 [2021-10-28 09:34:24,061 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:34:24,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-10-28 09:34:24,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 258. [2021-10-28 09:34:24,077 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) [2021-10-28 09:34:24,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 365 transitions. [2021-10-28 09:34:24,078 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 365 transitions. Word has length 22 [2021-10-28 09:34:24,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:24,079 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 365 transitions. [2021-10-28 09:34:24,079 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) [2021-10-28 09:34:24,079 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 365 transitions. [2021-10-28 09:34:24,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 09:34:24,084 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:24,084 INFO L513 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] [2021-10-28 09:34:24,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-28 09:34:24,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:34:24,295 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)] === [2021-10-28 09:34:24,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:24,296 INFO L85 PathProgramCache]: Analyzing trace with hash 177561437, now seen corresponding path program 1 times [2021-10-28 09:34:24,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:34:24,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126775239] [2021-10-28 09:34:24,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:24,296 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:34:24,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:34:24,297 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:34:24,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:34:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:24,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:34:24,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:24,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:24,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:34:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:24,603 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:34:24,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126775239] [2021-10-28 09:34:24,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126775239] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:24,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:24,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-28 09:34:24,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701403513] [2021-10-28 09:34:24,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:34:24,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:34:24,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:34:24,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:34:24,611 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) [2021-10-28 09:34:24,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:24,910 INFO L93 Difference]: Finished difference Result 402 states and 541 transitions. [2021-10-28 09:34:24,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:34:24,911 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 [2021-10-28 09:34:24,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:24,916 INFO L225 Difference]: With dead ends: 402 [2021-10-28 09:34:24,917 INFO L226 Difference]: Without dead ends: 354 [2021-10-28 09:34:24,917 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:34:24,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-10-28 09:34:24,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 248. [2021-10-28 09:34:24,931 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) [2021-10-28 09:34:24,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 348 transitions. [2021-10-28 09:34:24,933 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 348 transitions. Word has length 26 [2021-10-28 09:34:24,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:24,933 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 348 transitions. [2021-10-28 09:34:24,933 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) [2021-10-28 09:34:24,933 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 348 transitions. [2021-10-28 09:34:24,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:34:24,934 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:24,935 INFO L513 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] [2021-10-28 09:34:24,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:25,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:34:25,146 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)] === [2021-10-28 09:34:25,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:25,146 INFO L85 PathProgramCache]: Analyzing trace with hash 755236346, now seen corresponding path program 1 times [2021-10-28 09:34:25,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:34:25,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003465637] [2021-10-28 09:34:25,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:25,147 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:34:25,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:34:25,148 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:34:25,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 09:34:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:25,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:34:25,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:25,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:34:25,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:25,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:34:25,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003465637] [2021-10-28 09:34:25,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003465637] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:25,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:25,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-28 09:34:25,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254501200] [2021-10-28 09:34:25,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:34:25,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:34:25,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:34:25,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:34:25,493 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) [2021-10-28 09:34:25,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:25,552 INFO L93 Difference]: Finished difference Result 456 states and 635 transitions. [2021-10-28 09:34:25,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:34:25,554 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 [2021-10-28 09:34:25,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:25,557 INFO L225 Difference]: With dead ends: 456 [2021-10-28 09:34:25,557 INFO L226 Difference]: Without dead ends: 381 [2021-10-28 09:34:25,558 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:34:25,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-10-28 09:34:25,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 310. [2021-10-28 09:34:25,576 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) [2021-10-28 09:34:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 423 transitions. [2021-10-28 09:34:25,578 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 423 transitions. Word has length 30 [2021-10-28 09:34:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:25,578 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 423 transitions. [2021-10-28 09:34:25,579 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) [2021-10-28 09:34:25,579 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 423 transitions. [2021-10-28 09:34:25,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:34:25,580 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:25,580 INFO L513 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] [2021-10-28 09:34:25,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:25,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:34:25,795 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)] === [2021-10-28 09:34:25,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:25,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1878814160, now seen corresponding path program 1 times [2021-10-28 09:34:25,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:34:25,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254170300] [2021-10-28 09:34:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:25,797 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:34:25,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:34:25,798 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:34:25,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 09:34:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:25,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:34:25,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:26,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:26,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:34:26,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:26,172 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:34:26,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254170300] [2021-10-28 09:34:26,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254170300] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:26,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:26,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2021-10-28 09:34:26,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038684769] [2021-10-28 09:34:26,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:34:26,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:34:26,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:34:26,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:34:26,174 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) [2021-10-28 09:34:26,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:26,712 INFO L93 Difference]: Finished difference Result 912 states and 1264 transitions. [2021-10-28 09:34:26,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 09:34:26,712 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 [2021-10-28 09:34:26,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:26,717 INFO L225 Difference]: With dead ends: 912 [2021-10-28 09:34:26,718 INFO L226 Difference]: Without dead ends: 805 [2021-10-28 09:34:26,718 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:34:26,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-10-28 09:34:26,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 446. [2021-10-28 09:34:26,754 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) [2021-10-28 09:34:26,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 608 transitions. [2021-10-28 09:34:26,757 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 608 transitions. Word has length 30 [2021-10-28 09:34:26,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:26,757 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 608 transitions. [2021-10-28 09:34:26,757 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) [2021-10-28 09:34:26,758 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 608 transitions. [2021-10-28 09:34:26,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 09:34:26,759 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:26,759 INFO L513 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] [2021-10-28 09:34:26,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:26,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:34:26,970 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)] === [2021-10-28 09:34:26,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:26,970 INFO L85 PathProgramCache]: Analyzing trace with hash 2002224973, now seen corresponding path program 1 times [2021-10-28 09:34:26,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:34:26,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691635170] [2021-10-28 09:34:26,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:26,971 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:34:26,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:34:26,977 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:34:26,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 09:34:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:27,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:34:27,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:27,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:27,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:34:27,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:27,443 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:34:27,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691635170] [2021-10-28 09:34:27,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691635170] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:27,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:27,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-10-28 09:34:27,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721127199] [2021-10-28 09:34:27,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:34:27,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:34:27,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:34:27,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:34:27,452 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) [2021-10-28 09:34:28,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:28,300 INFO L93 Difference]: Finished difference Result 746 states and 1004 transitions. [2021-10-28 09:34:28,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-28 09:34:28,301 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 [2021-10-28 09:34:28,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:28,305 INFO L225 Difference]: With dead ends: 746 [2021-10-28 09:34:28,306 INFO L226 Difference]: Without dead ends: 705 [2021-10-28 09:34:28,306 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2021-10-28 09:34:28,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-10-28 09:34:28,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 444. [2021-10-28 09:34:28,340 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) [2021-10-28 09:34:28,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 606 transitions. [2021-10-28 09:34:28,341 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 606 transitions. Word has length 31 [2021-10-28 09:34:28,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:28,342 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 606 transitions. [2021-10-28 09:34:28,342 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) [2021-10-28 09:34:28,342 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 606 transitions. [2021-10-28 09:34:28,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 09:34:28,343 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:28,344 INFO L513 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] [2021-10-28 09:34:28,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:28,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:34:28,556 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)] === [2021-10-28 09:34:28,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:28,557 INFO L85 PathProgramCache]: Analyzing trace with hash 2059483275, now seen corresponding path program 1 times [2021-10-28 09:34:28,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:34:28,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33937796] [2021-10-28 09:34:28,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:28,557 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:34:28,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:34:28,558 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:34:28,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 09:34:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:28,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:34:28,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:28,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:34:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:28,870 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:34:28,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33937796] [2021-10-28 09:34:28,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33937796] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:28,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:28,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-28 09:34:28,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160008756] [2021-10-28 09:34:28,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:34:28,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:34:28,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:34:28,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:34:28,875 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) [2021-10-28 09:34:28,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:28,954 INFO L93 Difference]: Finished difference Result 501 states and 681 transitions. [2021-10-28 09:34:28,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:34:28,954 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 [2021-10-28 09:34:28,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:28,957 INFO L225 Difference]: With dead ends: 501 [2021-10-28 09:34:28,958 INFO L226 Difference]: Without dead ends: 496 [2021-10-28 09:34:28,958 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:34:28,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-10-28 09:34:28,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 444. [2021-10-28 09:34:28,986 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) [2021-10-28 09:34:28,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 601 transitions. [2021-10-28 09:34:28,988 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 601 transitions. Word has length 31 [2021-10-28 09:34:28,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:28,990 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 601 transitions. [2021-10-28 09:34:28,990 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) [2021-10-28 09:34:28,990 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 601 transitions. [2021-10-28 09:34:28,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 09:34:28,992 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:28,992 INFO L513 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] [2021-10-28 09:34:29,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:29,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:34:29,204 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)] === [2021-10-28 09:34:29,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:29,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1226989779, now seen corresponding path program 1 times [2021-10-28 09:34:29,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:34:29,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068874707] [2021-10-28 09:34:29,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:29,205 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:34:29,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:34:29,206 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:34:29,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 09:34:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:29,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:34:29,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:29,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:29,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:34:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:29,533 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:34:29,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068874707] [2021-10-28 09:34:29,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068874707] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:34:29,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:34:29,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-28 09:34:29,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533294050] [2021-10-28 09:34:29,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:34:29,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:34:29,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:34:29,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:34:29,535 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) [2021-10-28 09:34:29,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:29,632 INFO L93 Difference]: Finished difference Result 901 states and 1199 transitions. [2021-10-28 09:34:29,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:34:29,632 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 [2021-10-28 09:34:29,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:29,637 INFO L225 Difference]: With dead ends: 901 [2021-10-28 09:34:29,637 INFO L226 Difference]: Without dead ends: 842 [2021-10-28 09:34:29,638 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:34:29,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-10-28 09:34:29,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 476. [2021-10-28 09:34:29,676 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) [2021-10-28 09:34:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 646 transitions. [2021-10-28 09:34:29,678 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 646 transitions. Word has length 32 [2021-10-28 09:34:29,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:29,679 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 646 transitions. [2021-10-28 09:34:29,679 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) [2021-10-28 09:34:29,679 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 646 transitions. [2021-10-28 09:34:29,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 09:34:29,680 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:29,681 INFO L513 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] [2021-10-28 09:34:29,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:29,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:34:29,892 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)] === [2021-10-28 09:34:29,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:29,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1711564241, now seen corresponding path program 1 times [2021-10-28 09:34:29,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:34:29,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209525442] [2021-10-28 09:34:29,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:29,893 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:34:29,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:34:29,895 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:34:29,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-28 09:34:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:34:30,055 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:34:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:34:30,149 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 09:34:30,149 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:34:30,150 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:34:30,152 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:34:30,152 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:34:30,153 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:34:30,153 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:34:30,153 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:34:30,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:30,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:34:30,366 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:30,368 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:34:30,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:34:30 BoogieIcfgContainer [2021-10-28 09:34:30,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:34:30,437 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:34:30,437 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:34:30,437 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:34:30,438 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:34:21" (3/4) ... [2021-10-28 09:34:30,439 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:34:30,519 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:34:30,519 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:34:30,520 INFO L168 Benchmark]: Toolchain (without parser) took 10592.58 ms. Allocated memory was 77.6 MB in the beginning and 100.7 MB in the end (delta: 23.1 MB). Free memory was 41.5 MB in the beginning and 70.1 MB in the end (delta: -28.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:34:30,521 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 77.6 MB. Free memory was 58.7 MB in the beginning and 58.6 MB in the end (delta: 66.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:34:30,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 514.21 ms. Allocated memory is still 77.6 MB. Free memory was 41.3 MB in the beginning and 49.7 MB in the end (delta: -8.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:30,521 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.85 ms. Allocated memory is still 77.6 MB. Free memory was 49.7 MB in the beginning and 47.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:30,522 INFO L168 Benchmark]: Boogie Preprocessor took 74.82 ms. Allocated memory is still 77.6 MB. Free memory was 47.5 MB in the beginning and 45.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:30,522 INFO L168 Benchmark]: RCFGBuilder took 642.48 ms. Allocated memory is still 77.6 MB. Free memory was 45.6 MB in the beginning and 52.8 MB in the end (delta: -7.2 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:30,523 INFO L168 Benchmark]: TraceAbstraction took 9196.27 ms. Allocated memory was 77.6 MB in the beginning and 100.7 MB in the end (delta: 23.1 MB). Free memory was 52.2 MB in the beginning and 74.3 MB in the end (delta: -22.1 MB). Peak memory consumption was 52.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:30,523 INFO L168 Benchmark]: Witness Printer took 81.74 ms. Allocated memory is still 100.7 MB. Free memory was 74.3 MB in the beginning and 70.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:34:30,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 77.6 MB. Free memory was 58.7 MB in the beginning and 58.6 MB in the end (delta: 66.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 514.21 ms. Allocated memory is still 77.6 MB. Free memory was 41.3 MB in the beginning and 49.7 MB in the end (delta: -8.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.85 ms. Allocated memory is still 77.6 MB. Free memory was 49.7 MB in the beginning and 47.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.82 ms. Allocated memory is still 77.6 MB. Free memory was 47.5 MB in the beginning and 45.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 642.48 ms. Allocated memory is still 77.6 MB. Free memory was 45.6 MB in the beginning and 52.8 MB in the end (delta: -7.2 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9196.27 ms. Allocated memory was 77.6 MB in the beginning and 100.7 MB in the end (delta: 23.1 MB). Free memory was 52.2 MB in the beginning and 74.3 MB in the end (delta: -22.1 MB). Peak memory consumption was 52.3 MB. Max. memory is 16.1 GB. * Witness Printer took 81.74 ms. Allocated memory is still 100.7 MB. Free memory was 74.3 MB in the beginning and 70.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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: 9.0s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1434 SDtfs, 3939 SDslu, 5495 SDs, 0 SdLazy, 1126 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 571 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.8s Time, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 1618 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s 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! [2021-10-28 09:34:30,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22fb094a-84b0-49ed-964c-af2883fbbde2/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...