./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_abp_1-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80c8055-1e1f-4a69-ae0f-5c951f005e29/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80c8055-1e1f-4a69-ae0f-5c951f005e29/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80c8055-1e1f-4a69-ae0f-5c951f005e29/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80c8055-1e1f-4a69-ae0f-5c951f005e29/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/psyco/psyco_abp_1-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80c8055-1e1f-4a69-ae0f-5c951f005e29/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80c8055-1e1f-4a69-ae0f-5c951f005e29/bin/uautomizer-Z5i5R5N3CC --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 0db572bf30caf92f48b0dba5a9cc25cec23b8ac8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:30:22,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:30:22,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:30:23,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:30:23,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:30:23,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:30:23,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:30:23,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:30:23,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:30:23,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:30:23,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:30:23,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:30:23,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:30:23,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:30:23,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:30:23,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:30:23,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:30:23,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:30:23,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:30:23,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:30:23,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:30:23,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:30:23,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:30:23,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:30:23,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:30:23,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:30:23,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:30:23,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:30:23,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:30:23,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:30:23,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:30:23,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:30:23,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:30:23,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:30:23,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:30:23,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:30:23,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:30:23,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:30:23,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:30:23,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:30:23,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:30:23,102 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80c8055-1e1f-4a69-ae0f-5c951f005e29/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:30:23,125 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:30:23,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:30:23,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:30:23,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:30:23,129 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:30:23,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:30:23,129 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:30:23,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:30:23,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:30:23,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:30:23,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:30:23,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:30:23,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:30:23,137 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:30:23,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:30:23,138 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:30:23,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:30:23,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:30:23,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:30:23,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:30:23,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:30:23,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:30:23,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:30:23,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:30:23,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:30:23,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:30:23,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:30:23,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:30:23,141 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_b80c8055-1e1f-4a69-ae0f-5c951f005e29/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80c8055-1e1f-4a69-ae0f-5c951f005e29/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0db572bf30caf92f48b0dba5a9cc25cec23b8ac8 [2021-10-11 00:30:23,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:30:23,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:30:23,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:30:23,450 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:30:23,451 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:30:23,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80c8055-1e1f-4a69-ae0f-5c951f005e29/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/psyco/psyco_abp_1-3.c [2021-10-11 00:30:23,533 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80c8055-1e1f-4a69-ae0f-5c951f005e29/bin/uautomizer-Z5i5R5N3CC/data/1a858c634/fb0e6142af7342e9a250a58d7ec3370d/FLAG2626a2985 [2021-10-11 00:30:24,165 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:30:24,169 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80c8055-1e1f-4a69-ae0f-5c951f005e29/sv-benchmarks/c/psyco/psyco_abp_1-3.c [2021-10-11 00:30:24,189 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80c8055-1e1f-4a69-ae0f-5c951f005e29/bin/uautomizer-Z5i5R5N3CC/data/1a858c634/fb0e6142af7342e9a250a58d7ec3370d/FLAG2626a2985 [2021-10-11 00:30:24,429 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80c8055-1e1f-4a69-ae0f-5c951f005e29/bin/uautomizer-Z5i5R5N3CC/data/1a858c634/fb0e6142af7342e9a250a58d7ec3370d [2021-10-11 00:30:24,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:30:24,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:30:24,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:30:24,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:30:24,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:30:24,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:30:24" (1/1) ... [2021-10-11 00:30:24,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38353610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:24, skipping insertion in model container [2021-10-11 00:30:24,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:30:24" (1/1) ... [2021-10-11 00:30:24,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:30:24,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:30:24,809 WARN L226 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_b80c8055-1e1f-4a69-ae0f-5c951f005e29/sv-benchmarks/c/psyco/psyco_abp_1-3.c[24720,24733] [2021-10-11 00:30:24,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:30:24,830 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:30:24,928 WARN L226 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_b80c8055-1e1f-4a69-ae0f-5c951f005e29/sv-benchmarks/c/psyco/psyco_abp_1-3.c[24720,24733] [2021-10-11 00:30:24,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:30:24,944 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:30:24,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:24 WrapperNode [2021-10-11 00:30:24,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:30:24,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:30:24,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:30:24,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:30:24,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:24" (1/1) ... [2021-10-11 00:30:24,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:24" (1/1) ... [2021-10-11 00:30:25,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:30:25,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:30:25,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:30:25,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:30:25,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:24" (1/1) ... [2021-10-11 00:30:25,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:24" (1/1) ... [2021-10-11 00:30:25,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:24" (1/1) ... [2021-10-11 00:30:25,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:24" (1/1) ... [2021-10-11 00:30:25,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:24" (1/1) ... [2021-10-11 00:30:25,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:24" (1/1) ... [2021-10-11 00:30:25,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:24" (1/1) ... [2021-10-11 00:30:25,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:30:25,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:30:25,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:30:25,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:30:25,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:24" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80c8055-1e1f-4a69-ae0f-5c951f005e29/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:30:25,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:30:25,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:30:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:30:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:30:26,313 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:30:26,314 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-11 00:30:26,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:30:26 BoogieIcfgContainer [2021-10-11 00:30:26,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:30:26,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:30:26,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:30:26,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:30:26,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:30:24" (1/3) ... [2021-10-11 00:30:26,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576c5504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:30:26, skipping insertion in model container [2021-10-11 00:30:26,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:24" (2/3) ... [2021-10-11 00:30:26,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576c5504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:30:26, skipping insertion in model container [2021-10-11 00:30:26,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:30:26" (3/3) ... [2021-10-11 00:30:26,336 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-3.c [2021-10-11 00:30:26,351 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:30:26,371 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:30:26,394 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 00:30:26,419 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:30:26,420 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:30:26,420 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:30:26,420 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:30:26,420 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:30:26,421 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:30:26,421 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:30:26,421 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:30:26,439 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states. [2021-10-11 00:30:26,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:30:26,445 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:26,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:26,446 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:26,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:26,452 INFO L82 PathProgramCache]: Analyzing trace with hash 352571511, now seen corresponding path program 1 times [2021-10-11 00:30:26,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:26,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769385955] [2021-10-11 00:30:26,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:26,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:26,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769385955] [2021-10-11 00:30:26,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:26,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:30:26,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81817751] [2021-10-11 00:30:26,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:30:26,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:26,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:30:26,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:30:26,646 INFO L87 Difference]: Start difference. First operand 109 states. Second operand 2 states. [2021-10-11 00:30:26,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:26,681 INFO L93 Difference]: Finished difference Result 216 states and 416 transitions. [2021-10-11 00:30:26,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:30:26,683 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2021-10-11 00:30:26,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:26,694 INFO L225 Difference]: With dead ends: 216 [2021-10-11 00:30:26,694 INFO L226 Difference]: Without dead ends: 100 [2021-10-11 00:30:26,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:30:26,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-11 00:30:26,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-10-11 00:30:26,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2021-10-11 00:30:26,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 165 transitions. [2021-10-11 00:30:26,748 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 165 transitions. Word has length 9 [2021-10-11 00:30:26,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:26,749 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 165 transitions. [2021-10-11 00:30:26,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:30:26,749 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 165 transitions. [2021-10-11 00:30:26,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:30:26,750 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:26,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:26,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:30:26,751 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:26,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:26,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1422697561, now seen corresponding path program 1 times [2021-10-11 00:30:26,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:26,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266300040] [2021-10-11 00:30:26,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:26,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266300040] [2021-10-11 00:30:26,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:26,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:30:26,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553372369] [2021-10-11 00:30:26,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:30:26,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:26,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:30:26,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:30:26,863 INFO L87 Difference]: Start difference. First operand 100 states and 165 transitions. Second operand 3 states. [2021-10-11 00:30:26,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:26,922 INFO L93 Difference]: Finished difference Result 201 states and 332 transitions. [2021-10-11 00:30:26,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:30:26,922 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-10-11 00:30:26,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:26,924 INFO L225 Difference]: With dead ends: 201 [2021-10-11 00:30:26,925 INFO L226 Difference]: Without dead ends: 103 [2021-10-11 00:30:26,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:30:26,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-11 00:30:26,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-10-11 00:30:26,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-10-11 00:30:26,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 168 transitions. [2021-10-11 00:30:26,939 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 168 transitions. Word has length 10 [2021-10-11 00:30:26,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:26,939 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 168 transitions. [2021-10-11 00:30:26,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:30:26,940 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 168 transitions. [2021-10-11 00:30:26,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 00:30:26,941 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:26,941 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:26,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:30:26,942 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:26,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:26,943 INFO L82 PathProgramCache]: Analyzing trace with hash 658032730, now seen corresponding path program 1 times [2021-10-11 00:30:26,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:26,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101335394] [2021-10-11 00:30:26,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:27,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:27,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101335394] [2021-10-11 00:30:27,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:27,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:30:27,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183757746] [2021-10-11 00:30:27,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:30:27,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:27,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:30:27,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:30:27,190 INFO L87 Difference]: Start difference. First operand 103 states and 168 transitions. Second operand 3 states. [2021-10-11 00:30:27,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:27,392 INFO L93 Difference]: Finished difference Result 205 states and 334 transitions. [2021-10-11 00:30:27,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:30:27,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-10-11 00:30:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:27,396 INFO L225 Difference]: With dead ends: 205 [2021-10-11 00:30:27,396 INFO L226 Difference]: Without dead ends: 186 [2021-10-11 00:30:27,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:30:27,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-10-11 00:30:27,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 172. [2021-10-11 00:30:27,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2021-10-11 00:30:27,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 281 transitions. [2021-10-11 00:30:27,416 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 281 transitions. Word has length 15 [2021-10-11 00:30:27,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:27,416 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 281 transitions. [2021-10-11 00:30:27,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:30:27,417 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 281 transitions. [2021-10-11 00:30:27,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 00:30:27,418 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:27,418 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:27,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:30:27,419 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:27,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:27,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1675425412, now seen corresponding path program 1 times [2021-10-11 00:30:27,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:27,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84430702] [2021-10-11 00:30:27,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:27,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84430702] [2021-10-11 00:30:27,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:27,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:30:27,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899499437] [2021-10-11 00:30:27,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:30:27,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:27,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:30:27,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:30:27,526 INFO L87 Difference]: Start difference. First operand 172 states and 281 transitions. Second operand 3 states. [2021-10-11 00:30:27,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:27,567 INFO L93 Difference]: Finished difference Result 293 states and 477 transitions. [2021-10-11 00:30:27,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:30:27,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-10-11 00:30:27,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:27,570 INFO L225 Difference]: With dead ends: 293 [2021-10-11 00:30:27,570 INFO L226 Difference]: Without dead ends: 124 [2021-10-11 00:30:27,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:30:27,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-11 00:30:27,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2021-10-11 00:30:27,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2021-10-11 00:30:27,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 194 transitions. [2021-10-11 00:30:27,581 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 194 transitions. Word has length 16 [2021-10-11 00:30:27,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:27,581 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 194 transitions. [2021-10-11 00:30:27,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:30:27,582 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 194 transitions. [2021-10-11 00:30:27,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:30:27,583 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:27,583 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:27,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:30:27,584 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:27,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:27,584 INFO L82 PathProgramCache]: Analyzing trace with hash -843118083, now seen corresponding path program 1 times [2021-10-11 00:30:27,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:27,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577079593] [2021-10-11 00:30:27,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 00:30:27,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577079593] [2021-10-11 00:30:27,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:27,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:30:27,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981431557] [2021-10-11 00:30:27,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:30:27,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:27,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:30:27,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:30:27,671 INFO L87 Difference]: Start difference. First operand 122 states and 194 transitions. Second operand 3 states. [2021-10-11 00:30:27,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:27,724 INFO L93 Difference]: Finished difference Result 226 states and 358 transitions. [2021-10-11 00:30:27,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:30:27,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-10-11 00:30:27,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:27,727 INFO L225 Difference]: With dead ends: 226 [2021-10-11 00:30:27,728 INFO L226 Difference]: Without dead ends: 107 [2021-10-11 00:30:27,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:30:27,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-11 00:30:27,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2021-10-11 00:30:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2021-10-11 00:30:27,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 163 transitions. [2021-10-11 00:30:27,756 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 163 transitions. Word has length 21 [2021-10-11 00:30:27,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:27,756 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 163 transitions. [2021-10-11 00:30:27,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:30:27,757 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 163 transitions. [2021-10-11 00:30:27,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 00:30:27,759 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:27,759 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:27,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:30:27,760 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:27,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:27,761 INFO L82 PathProgramCache]: Analyzing trace with hash -671640130, now seen corresponding path program 1 times [2021-10-11 00:30:27,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:27,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401913984] [2021-10-11 00:30:27,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:28,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:28,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401913984] [2021-10-11 00:30:28,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776866977] [2021-10-11 00:30:28,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80c8055-1e1f-4a69-ae0f-5c951f005e29/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:30:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:28,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 00:30:28,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:30:28,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:28,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:30:28,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2021-10-11 00:30:28,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105460148] [2021-10-11 00:30:28,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 00:30:28,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:28,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 00:30:28,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:30:28,371 INFO L87 Difference]: Start difference. First operand 105 states and 163 transitions. Second operand 9 states. [2021-10-11 00:30:29,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:29,536 INFO L93 Difference]: Finished difference Result 446 states and 699 transitions. [2021-10-11 00:30:29,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 00:30:29,537 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2021-10-11 00:30:29,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:29,544 INFO L225 Difference]: With dead ends: 446 [2021-10-11 00:30:29,544 INFO L226 Difference]: Without dead ends: 327 [2021-10-11 00:30:29,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-10-11 00:30:29,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-10-11 00:30:29,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 291. [2021-10-11 00:30:29,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2021-10-11 00:30:29,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 458 transitions. [2021-10-11 00:30:29,574 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 458 transitions. Word has length 23 [2021-10-11 00:30:29,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:29,574 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 458 transitions. [2021-10-11 00:30:29,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 00:30:29,575 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 458 transitions. [2021-10-11 00:30:29,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 00:30:29,577 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:29,583 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:29,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-11 00:30:29,808 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:29,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:29,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1800121285, now seen corresponding path program 1 times [2021-10-11 00:30:29,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:29,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194124401] [2021-10-11 00:30:29,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:29,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 00:30:29,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194124401] [2021-10-11 00:30:29,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:29,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:30:29,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163779447] [2021-10-11 00:30:29,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:30:29,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:29,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:30:29,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:30:29,873 INFO L87 Difference]: Start difference. First operand 291 states and 458 transitions. Second operand 3 states. [2021-10-11 00:30:29,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:29,919 INFO L93 Difference]: Finished difference Result 580 states and 909 transitions. [2021-10-11 00:30:29,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:30:29,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2021-10-11 00:30:29,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:29,923 INFO L225 Difference]: With dead ends: 580 [2021-10-11 00:30:29,923 INFO L226 Difference]: Without dead ends: 313 [2021-10-11 00:30:29,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:30:29,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-10-11 00:30:29,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 311. [2021-10-11 00:30:29,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2021-10-11 00:30:29,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 478 transitions. [2021-10-11 00:30:29,943 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 478 transitions. Word has length 25 [2021-10-11 00:30:29,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:29,944 INFO L481 AbstractCegarLoop]: Abstraction has 311 states and 478 transitions. [2021-10-11 00:30:29,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:30:29,944 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 478 transitions. [2021-10-11 00:30:29,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-11 00:30:29,949 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:29,950 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:29,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 00:30:29,951 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:29,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:29,951 INFO L82 PathProgramCache]: Analyzing trace with hash 2124865792, now seen corresponding path program 1 times [2021-10-11 00:30:29,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:29,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941924039] [2021-10-11 00:30:29,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:30,093 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 00:30:30,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941924039] [2021-10-11 00:30:30,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:30,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:30:30,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490255583] [2021-10-11 00:30:30,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:30:30,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:30,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:30:30,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:30:30,096 INFO L87 Difference]: Start difference. First operand 311 states and 478 transitions. Second operand 3 states. [2021-10-11 00:30:30,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:30,115 INFO L93 Difference]: Finished difference Result 314 states and 480 transitions. [2021-10-11 00:30:30,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:30:30,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2021-10-11 00:30:30,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:30,118 INFO L225 Difference]: With dead ends: 314 [2021-10-11 00:30:30,118 INFO L226 Difference]: Without dead ends: 308 [2021-10-11 00:30:30,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:30:30,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-10-11 00:30:30,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 307. [2021-10-11 00:30:30,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2021-10-11 00:30:30,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 466 transitions. [2021-10-11 00:30:30,140 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 466 transitions. Word has length 27 [2021-10-11 00:30:30,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:30,142 INFO L481 AbstractCegarLoop]: Abstraction has 307 states and 466 transitions. [2021-10-11 00:30:30,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:30:30,142 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 466 transitions. [2021-10-11 00:30:30,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-11 00:30:30,146 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:30,146 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:30,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 00:30:30,146 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:30,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:30,147 INFO L82 PathProgramCache]: Analyzing trace with hash -917092134, now seen corresponding path program 1 times [2021-10-11 00:30:30,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:30,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152043074] [2021-10-11 00:30:30,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-11 00:30:30,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152043074] [2021-10-11 00:30:30,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:30,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:30:30,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209158806] [2021-10-11 00:30:30,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:30:30,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:30,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:30:30,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:30:30,224 INFO L87 Difference]: Start difference. First operand 307 states and 466 transitions. Second operand 3 states. [2021-10-11 00:30:30,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:30,273 INFO L93 Difference]: Finished difference Result 506 states and 768 transitions. [2021-10-11 00:30:30,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:30:30,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2021-10-11 00:30:30,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:30,277 INFO L225 Difference]: With dead ends: 506 [2021-10-11 00:30:30,277 INFO L226 Difference]: Without dead ends: 223 [2021-10-11 00:30:30,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:30:30,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-10-11 00:30:30,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2021-10-11 00:30:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2021-10-11 00:30:30,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 330 transitions. [2021-10-11 00:30:30,291 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 330 transitions. Word has length 33 [2021-10-11 00:30:30,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:30,291 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 330 transitions. [2021-10-11 00:30:30,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:30:30,292 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 330 transitions. [2021-10-11 00:30:30,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-11 00:30:30,298 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:30,298 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 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] [2021-10-11 00:30:30,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 00:30:30,299 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:30,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:30,300 INFO L82 PathProgramCache]: Analyzing trace with hash 272165387, now seen corresponding path program 1 times [2021-10-11 00:30:30,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:30,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580685446] [2021-10-11 00:30:30,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:30,355 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-11 00:30:30,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580685446] [2021-10-11 00:30:30,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:30,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:30:30,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116030076] [2021-10-11 00:30:30,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:30:30,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:30,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:30:30,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:30:30,362 INFO L87 Difference]: Start difference. First operand 221 states and 330 transitions. Second operand 3 states. [2021-10-11 00:30:30,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:30,405 INFO L93 Difference]: Finished difference Result 384 states and 570 transitions. [2021-10-11 00:30:30,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:30:30,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2021-10-11 00:30:30,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:30,408 INFO L225 Difference]: With dead ends: 384 [2021-10-11 00:30:30,408 INFO L226 Difference]: Without dead ends: 205 [2021-10-11 00:30:30,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:30:30,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-10-11 00:30:30,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2021-10-11 00:30:30,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2021-10-11 00:30:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 293 transitions. [2021-10-11 00:30:30,421 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 293 transitions. Word has length 37 [2021-10-11 00:30:30,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:30,421 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 293 transitions. [2021-10-11 00:30:30,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:30:30,422 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 293 transitions. [2021-10-11 00:30:30,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-11 00:30:30,423 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:30,423 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 2, 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] [2021-10-11 00:30:30,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 00:30:30,424 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:30,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:30,424 INFO L82 PathProgramCache]: Analyzing trace with hash -140510671, now seen corresponding path program 1 times [2021-10-11 00:30:30,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:30,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956694087] [2021-10-11 00:30:30,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:30,509 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-11 00:30:30,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956694087] [2021-10-11 00:30:30,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:30,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:30:30,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538340296] [2021-10-11 00:30:30,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:30:30,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:30,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:30:30,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:30:30,515 INFO L87 Difference]: Start difference. First operand 203 states and 293 transitions. Second operand 3 states. [2021-10-11 00:30:30,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:30,560 INFO L93 Difference]: Finished difference Result 285 states and 411 transitions. [2021-10-11 00:30:30,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:30:30,561 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2021-10-11 00:30:30,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:30,564 INFO L225 Difference]: With dead ends: 285 [2021-10-11 00:30:30,564 INFO L226 Difference]: Without dead ends: 143 [2021-10-11 00:30:30,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:30:30,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-11 00:30:30,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2021-10-11 00:30:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-10-11 00:30:30,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 199 transitions. [2021-10-11 00:30:30,574 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 199 transitions. Word has length 46 [2021-10-11 00:30:30,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:30,574 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 199 transitions. [2021-10-11 00:30:30,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:30:30,574 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 199 transitions. [2021-10-11 00:30:30,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-11 00:30:30,575 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:30,575 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 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] [2021-10-11 00:30:30,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 00:30:30,576 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:30,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:30,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1014660280, now seen corresponding path program 1 times [2021-10-11 00:30:30,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:30,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113654081] [2021-10-11 00:30:30,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:30,791 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 00:30:30,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113654081] [2021-10-11 00:30:30,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301184670] [2021-10-11 00:30:30,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80c8055-1e1f-4a69-ae0f-5c951f005e29/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:30:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:30,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-11 00:30:30,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:30:31,157 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:31,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:30:31,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-10-11 00:30:31,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599685847] [2021-10-11 00:30:31,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 00:30:31,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:31,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 00:30:31,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:30:31,159 INFO L87 Difference]: Start difference. First operand 141 states and 199 transitions. Second operand 11 states. [2021-10-11 00:30:31,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:31,314 INFO L93 Difference]: Finished difference Result 167 states and 233 transitions. [2021-10-11 00:30:31,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 00:30:31,314 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2021-10-11 00:30:31,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:31,317 INFO L225 Difference]: With dead ends: 167 [2021-10-11 00:30:31,317 INFO L226 Difference]: Without dead ends: 160 [2021-10-11 00:30:31,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:30:31,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-11 00:30:31,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2021-10-11 00:30:31,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2021-10-11 00:30:31,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 220 transitions. [2021-10-11 00:30:31,327 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 220 transitions. Word has length 47 [2021-10-11 00:30:31,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:31,329 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 220 transitions. [2021-10-11 00:30:31,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 00:30:31,330 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 220 transitions. [2021-10-11 00:30:31,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-11 00:30:31,331 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:31,331 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 2, 2, 2, 2, 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] [2021-10-11 00:30:31,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-11 00:30:31,544 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:31,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:31,544 INFO L82 PathProgramCache]: Analyzing trace with hash 751253453, now seen corresponding path program 1 times [2021-10-11 00:30:31,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:31,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341781742] [2021-10-11 00:30:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:32,030 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:32,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341781742] [2021-10-11 00:30:32,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41022391] [2021-10-11 00:30:32,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80c8055-1e1f-4a69-ae0f-5c951f005e29/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:30:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:32,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-11 00:30:32,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:30:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:32,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:30:32,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-11 00:30:32,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496764135] [2021-10-11 00:30:32,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-10-11 00:30:32,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:32,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-11 00:30:32,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-10-11 00:30:32,441 INFO L87 Difference]: Start difference. First operand 158 states and 220 transitions. Second operand 13 states. [2021-10-11 00:30:32,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:32,792 INFO L93 Difference]: Finished difference Result 252 states and 354 transitions. [2021-10-11 00:30:32,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 00:30:32,793 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2021-10-11 00:30:32,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:32,795 INFO L225 Difference]: With dead ends: 252 [2021-10-11 00:30:32,795 INFO L226 Difference]: Without dead ends: 250 [2021-10-11 00:30:32,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-11 00:30:32,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-11 00:30:32,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2021-10-11 00:30:32,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2021-10-11 00:30:32,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 346 transitions. [2021-10-11 00:30:32,807 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 346 transitions. Word has length 57 [2021-10-11 00:30:32,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:32,807 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 346 transitions. [2021-10-11 00:30:32,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-10-11 00:30:32,808 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 346 transitions. [2021-10-11 00:30:32,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-11 00:30:32,808 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:32,809 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:33,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-11 00:30:33,023 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:33,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:33,023 INFO L82 PathProgramCache]: Analyzing trace with hash 366250712, now seen corresponding path program 1 times [2021-10-11 00:30:33,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:33,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123089771] [2021-10-11 00:30:33,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 20 proven. 175 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-10-11 00:30:33,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123089771] [2021-10-11 00:30:33,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471592888] [2021-10-11 00:30:33,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80c8055-1e1f-4a69-ae0f-5c951f005e29/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:30:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:33,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-11 00:30:33,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:30:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 20 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:34,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:30:34,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 19 [2021-10-11 00:30:34,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993079834] [2021-10-11 00:30:34,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-10-11 00:30:34,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:34,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-11 00:30:34,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-10-11 00:30:34,360 INFO L87 Difference]: Start difference. First operand 248 states and 346 transitions. Second operand 19 states. [2021-10-11 00:30:34,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:34,558 INFO L93 Difference]: Finished difference Result 266 states and 372 transitions. [2021-10-11 00:30:34,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-11 00:30:34,559 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 108 [2021-10-11 00:30:34,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:34,559 INFO L225 Difference]: With dead ends: 266 [2021-10-11 00:30:34,559 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:30:34,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 98 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-10-11 00:30:34,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:30:34,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:30:34,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:30:34,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:30:34,561 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 108 [2021-10-11 00:30:34,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:34,561 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:30:34,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-10-11 00:30:34,561 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:30:34,562 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:30:34,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:30:34,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:30:35,220 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 42 [2021-10-11 00:30:35,224 INFO L262 CegarLoopResult]: For program point L432(lines 432 434) no Hoare annotation was computed. [2021-10-11 00:30:35,224 INFO L262 CegarLoopResult]: For program point L300(lines 300 302) no Hoare annotation was computed. [2021-10-11 00:30:35,224 INFO L262 CegarLoopResult]: For program point L168(lines 168 170) no Hoare annotation was computed. [2021-10-11 00:30:35,224 INFO L262 CegarLoopResult]: For program point L532(lines 532 534) no Hoare annotation was computed. [2021-10-11 00:30:35,224 INFO L262 CegarLoopResult]: For program point L400(lines 400 402) no Hoare annotation was computed. [2021-10-11 00:30:35,224 INFO L262 CegarLoopResult]: For program point L268(lines 268 270) no Hoare annotation was computed. [2021-10-11 00:30:35,224 INFO L262 CegarLoopResult]: For program point L500(lines 500 502) no Hoare annotation was computed. [2021-10-11 00:30:35,224 INFO L262 CegarLoopResult]: For program point L368(lines 368 370) no Hoare annotation was computed. [2021-10-11 00:30:35,224 INFO L262 CegarLoopResult]: For program point L468(lines 468 470) no Hoare annotation was computed. [2021-10-11 00:30:35,224 INFO L262 CegarLoopResult]: For program point L41(lines 41 60) no Hoare annotation was computed. [2021-10-11 00:30:35,224 INFO L262 CegarLoopResult]: For program point L42(lines 42 57) no Hoare annotation was computed. [2021-10-11 00:30:35,224 INFO L262 CegarLoopResult]: For program point L142(lines 142 157) no Hoare annotation was computed. [2021-10-11 00:30:35,225 INFO L262 CegarLoopResult]: For program point L242(lines 242 257) no Hoare annotation was computed. [2021-10-11 00:30:35,225 INFO L262 CegarLoopResult]: For program point L110(lines 110 125) no Hoare annotation was computed. [2021-10-11 00:30:35,225 INFO L262 CegarLoopResult]: For program point L44(lines 44 55) no Hoare annotation was computed. [2021-10-11 00:30:35,225 INFO L262 CegarLoopResult]: For program point L342(lines 342 357) no Hoare annotation was computed. [2021-10-11 00:30:35,226 INFO L262 CegarLoopResult]: For program point L210(lines 210 225) no Hoare annotation was computed. [2021-10-11 00:30:35,226 INFO L262 CegarLoopResult]: For program point L144(lines 144 155) no Hoare annotation was computed. [2021-10-11 00:30:35,226 INFO L262 CegarLoopResult]: For program point L78(lines 78 93) no Hoare annotation was computed. [2021-10-11 00:30:35,226 INFO L262 CegarLoopResult]: For program point L442(lines 442 457) no Hoare annotation was computed. [2021-10-11 00:30:35,226 INFO L262 CegarLoopResult]: For program point L310(lines 310 325) no Hoare annotation was computed. [2021-10-11 00:30:35,226 INFO L262 CegarLoopResult]: For program point L244(lines 244 255) no Hoare annotation was computed. [2021-10-11 00:30:35,227 INFO L262 CegarLoopResult]: For program point L178(lines 178 193) no Hoare annotation was computed. [2021-10-11 00:30:35,227 INFO L262 CegarLoopResult]: For program point L112(lines 112 123) no Hoare annotation was computed. [2021-10-11 00:30:35,227 INFO L262 CegarLoopResult]: For program point L542(lines 542 557) no Hoare annotation was computed. [2021-10-11 00:30:35,227 INFO L262 CegarLoopResult]: For program point L410(lines 410 425) no Hoare annotation was computed. [2021-10-11 00:30:35,227 INFO L262 CegarLoopResult]: For program point L344(lines 344 355) no Hoare annotation was computed. [2021-10-11 00:30:35,228 INFO L262 CegarLoopResult]: For program point L278(lines 278 293) no Hoare annotation was computed. [2021-10-11 00:30:35,229 INFO L262 CegarLoopResult]: For program point L212(lines 212 223) no Hoare annotation was computed. [2021-10-11 00:30:35,229 INFO L262 CegarLoopResult]: For program point L80(lines 80 91) no Hoare annotation was computed. [2021-10-11 00:30:35,229 INFO L262 CegarLoopResult]: For program point L510(lines 510 525) no Hoare annotation was computed. [2021-10-11 00:30:35,229 INFO L262 CegarLoopResult]: For program point L444(lines 444 455) no Hoare annotation was computed. [2021-10-11 00:30:35,229 INFO L262 CegarLoopResult]: For program point L378(lines 378 393) no Hoare annotation was computed. [2021-10-11 00:30:35,229 INFO L262 CegarLoopResult]: For program point L312(lines 312 323) no Hoare annotation was computed. [2021-10-11 00:30:35,229 INFO L262 CegarLoopResult]: For program point L180(lines 180 191) no Hoare annotation was computed. [2021-10-11 00:30:35,229 INFO L262 CegarLoopResult]: For program point L48(lines 48 50) no Hoare annotation was computed. [2021-10-11 00:30:35,230 INFO L262 CegarLoopResult]: For program point L544(lines 544 555) no Hoare annotation was computed. [2021-10-11 00:30:35,230 INFO L262 CegarLoopResult]: For program point L478(lines 478 493) no Hoare annotation was computed. [2021-10-11 00:30:35,230 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-11 00:30:35,230 INFO L262 CegarLoopResult]: For program point L280(lines 280 291) no Hoare annotation was computed. [2021-10-11 00:30:35,231 INFO L262 CegarLoopResult]: For program point L148(lines 148 150) no Hoare annotation was computed. [2021-10-11 00:30:35,231 INFO L265 CegarLoopResult]: At program point L16(lines 16 568) the Hoare annotation is: true [2021-10-11 00:30:35,231 INFO L262 CegarLoopResult]: For program point L512(lines 512 523) no Hoare annotation was computed. [2021-10-11 00:30:35,231 INFO L262 CegarLoopResult]: For program point L380(lines 380 391) no Hoare annotation was computed. [2021-10-11 00:30:35,231 INFO L262 CegarLoopResult]: For program point L248(lines 248 250) no Hoare annotation was computed. [2021-10-11 00:30:35,231 INFO L262 CegarLoopResult]: For program point L116(lines 116 118) no Hoare annotation was computed. [2021-10-11 00:30:35,232 INFO L262 CegarLoopResult]: For program point L480(lines 480 491) no Hoare annotation was computed. [2021-10-11 00:30:35,232 INFO L262 CegarLoopResult]: For program point L348(lines 348 350) no Hoare annotation was computed. [2021-10-11 00:30:35,232 INFO L262 CegarLoopResult]: For program point L216(lines 216 218) no Hoare annotation was computed. [2021-10-11 00:30:35,232 INFO L262 CegarLoopResult]: For program point L84(lines 84 86) no Hoare annotation was computed. [2021-10-11 00:30:35,232 INFO L262 CegarLoopResult]: For program point L448(lines 448 450) no Hoare annotation was computed. [2021-10-11 00:30:35,232 INFO L262 CegarLoopResult]: For program point L316(lines 316 318) no Hoare annotation was computed. [2021-10-11 00:30:35,232 INFO L262 CegarLoopResult]: For program point L184(lines 184 186) no Hoare annotation was computed. [2021-10-11 00:30:35,232 INFO L262 CegarLoopResult]: For program point L548(lines 548 550) no Hoare annotation was computed. [2021-10-11 00:30:35,233 INFO L262 CegarLoopResult]: For program point L416(lines 416 418) no Hoare annotation was computed. [2021-10-11 00:30:35,233 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:30:35,233 INFO L262 CegarLoopResult]: For program point L284(lines 284 286) no Hoare annotation was computed. [2021-10-11 00:30:35,233 INFO L258 CegarLoopResult]: At program point L549(lines 16 568) the Hoare annotation is: false [2021-10-11 00:30:35,233 INFO L262 CegarLoopResult]: For program point L516(lines 516 518) no Hoare annotation was computed. [2021-10-11 00:30:35,233 INFO L262 CegarLoopResult]: For program point L384(lines 384 386) no Hoare annotation was computed. [2021-10-11 00:30:35,233 INFO L262 CegarLoopResult]: For program point L484(lines 484 486) no Hoare annotation was computed. [2021-10-11 00:30:35,233 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:30:35,234 INFO L258 CegarLoopResult]: At program point L26-2(lines 26 563) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~this_buffer_empty~0 0))) (or (and (<= ULTIMATE.start_main_~this_expect~0 (+ (* 2 (div (+ ULTIMATE.start_main_~this_expect~0 (- 2)) 2)) 2)) (<= 5 ULTIMATE.start_main_~q~0) (<= 0 (+ ULTIMATE.start_main_~P8~0 2147483648)) .cse0 (<= (div ULTIMATE.start_main_~P8~0 4294967296) 0)) (and .cse0 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~this_expect~0 0)))) [2021-10-11 00:30:35,234 INFO L262 CegarLoopResult]: For program point L26-3(lines 26 563) no Hoare annotation was computed. [2021-10-11 00:30:35,234 INFO L262 CegarLoopResult]: For program point L126(lines 126 141) no Hoare annotation was computed. [2021-10-11 00:30:35,234 INFO L262 CegarLoopResult]: For program point L226(lines 226 241) no Hoare annotation was computed. [2021-10-11 00:30:35,234 INFO L262 CegarLoopResult]: For program point L94(lines 94 109) no Hoare annotation was computed. [2021-10-11 00:30:35,234 INFO L262 CegarLoopResult]: For program point L61(lines 61 160) no Hoare annotation was computed. [2021-10-11 00:30:35,234 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:30:35,235 INFO L262 CegarLoopResult]: For program point L326(lines 326 341) no Hoare annotation was computed. [2021-10-11 00:30:35,235 INFO L262 CegarLoopResult]: For program point L194(lines 194 209) no Hoare annotation was computed. [2021-10-11 00:30:35,235 INFO L262 CegarLoopResult]: For program point L161(lines 161 260) no Hoare annotation was computed. [2021-10-11 00:30:35,235 INFO L262 CegarLoopResult]: For program point L128(lines 128 139) no Hoare annotation was computed. [2021-10-11 00:30:35,235 INFO L262 CegarLoopResult]: For program point L62(lines 62 77) no Hoare annotation was computed. [2021-10-11 00:30:35,236 INFO L262 CegarLoopResult]: For program point L426(lines 426 441) no Hoare annotation was computed. [2021-10-11 00:30:35,236 INFO L262 CegarLoopResult]: For program point L294(lines 294 309) no Hoare annotation was computed. [2021-10-11 00:30:35,236 INFO L262 CegarLoopResult]: For program point L261(lines 261 360) no Hoare annotation was computed. [2021-10-11 00:30:35,236 INFO L262 CegarLoopResult]: For program point L228(lines 228 239) no Hoare annotation was computed. [2021-10-11 00:30:35,236 INFO L262 CegarLoopResult]: For program point L162(lines 162 177) no Hoare annotation was computed. [2021-10-11 00:30:35,236 INFO L262 CegarLoopResult]: For program point L96(lines 96 107) no Hoare annotation was computed. [2021-10-11 00:30:35,237 INFO L258 CegarLoopResult]: At program point L559(lines 26 563) the Hoare annotation is: (let ((.cse4 (<= ULTIMATE.start_main_~this_expect~0 (+ (* 2 (div (+ ULTIMATE.start_main_~this_expect~0 (- 2)) 2)) 2))) (.cse3 (= ULTIMATE.start_main_~this_buffer_empty~0 1)) (.cse0 (<= ULTIMATE.start_main_~this_expect~0 (+ (* 2 (div (+ ULTIMATE.start_main_~this_expect~0 (- 1)) 2)) 1))) (.cse1 (<= 0 (+ ULTIMATE.start_main_~P8~0 2147483648))) (.cse5 (= ULTIMATE.start_main_~this_buffer_empty~0 0)) (.cse2 (<= (div ULTIMATE.start_main_~P8~0 4294967296) 0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~q~0 4) .cse3) (and .cse4 (<= 5 ULTIMATE.start_main_~q~0) .cse1 .cse5 .cse2) (and .cse5 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~this_expect~0 0)) (and (= ULTIMATE.start_main_~q~0 1) .cse4 .cse1 .cse2 .cse3) (and .cse0 .cse1 (= ULTIMATE.start_main_~q~0 3) .cse5 .cse2))) [2021-10-11 00:30:35,237 INFO L262 CegarLoopResult]: For program point L526(lines 526 541) no Hoare annotation was computed. [2021-10-11 00:30:35,237 INFO L262 CegarLoopResult]: For program point L394(lines 394 409) no Hoare annotation was computed. [2021-10-11 00:30:35,237 INFO L262 CegarLoopResult]: For program point L361(lines 361 460) no Hoare annotation was computed. [2021-10-11 00:30:35,237 INFO L262 CegarLoopResult]: For program point L328(lines 328 339) no Hoare annotation was computed. [2021-10-11 00:30:35,237 INFO L262 CegarLoopResult]: For program point L262(lines 262 277) no Hoare annotation was computed. [2021-10-11 00:30:35,237 INFO L262 CegarLoopResult]: For program point L196(lines 196 207) no Hoare annotation was computed. [2021-10-11 00:30:35,237 INFO L262 CegarLoopResult]: For program point L64(lines 64 75) no Hoare annotation was computed. [2021-10-11 00:30:35,238 INFO L262 CegarLoopResult]: For program point L494(lines 494 509) no Hoare annotation was computed. [2021-10-11 00:30:35,238 INFO L262 CegarLoopResult]: For program point L461(lines 461 560) no Hoare annotation was computed. [2021-10-11 00:30:35,238 INFO L262 CegarLoopResult]: For program point L428(lines 428 439) no Hoare annotation was computed. [2021-10-11 00:30:35,238 INFO L262 CegarLoopResult]: For program point L362(lines 362 377) no Hoare annotation was computed. [2021-10-11 00:30:35,238 INFO L262 CegarLoopResult]: For program point L296(lines 296 307) no Hoare annotation was computed. [2021-10-11 00:30:35,238 INFO L262 CegarLoopResult]: For program point L164(lines 164 175) no Hoare annotation was computed. [2021-10-11 00:30:35,239 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 00:30:35,239 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 567) no Hoare annotation was computed. [2021-10-11 00:30:35,240 INFO L262 CegarLoopResult]: For program point L528(lines 528 539) no Hoare annotation was computed. [2021-10-11 00:30:35,240 INFO L262 CegarLoopResult]: For program point L462(lines 462 477) no Hoare annotation was computed. [2021-10-11 00:30:35,240 INFO L262 CegarLoopResult]: For program point L396(lines 396 407) no Hoare annotation was computed. [2021-10-11 00:30:35,240 INFO L262 CegarLoopResult]: For program point L264(lines 264 275) no Hoare annotation was computed. [2021-10-11 00:30:35,240 INFO L262 CegarLoopResult]: For program point L132(lines 132 134) no Hoare annotation was computed. [2021-10-11 00:30:35,240 INFO L262 CegarLoopResult]: For program point L496(lines 496 507) no Hoare annotation was computed. [2021-10-11 00:30:35,240 INFO L262 CegarLoopResult]: For program point L364(lines 364 375) no Hoare annotation was computed. [2021-10-11 00:30:35,240 INFO L262 CegarLoopResult]: For program point L232(lines 232 234) no Hoare annotation was computed. [2021-10-11 00:30:35,241 INFO L262 CegarLoopResult]: For program point L100(lines 100 102) no Hoare annotation was computed. [2021-10-11 00:30:35,241 INFO L262 CegarLoopResult]: For program point L464(lines 464 475) no Hoare annotation was computed. [2021-10-11 00:30:35,241 INFO L262 CegarLoopResult]: For program point L332(lines 332 334) no Hoare annotation was computed. [2021-10-11 00:30:35,241 INFO L262 CegarLoopResult]: For program point L200(lines 200 202) no Hoare annotation was computed. [2021-10-11 00:30:35,241 INFO L262 CegarLoopResult]: For program point L68(lines 68 70) no Hoare annotation was computed. [2021-10-11 00:30:35,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:30:35 BoogieIcfgContainer [2021-10-11 00:30:35,283 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:30:35,284 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:30:35,284 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:30:35,284 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:30:35,285 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:30:26" (3/4) ... [2021-10-11 00:30:35,288 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:30:35,315 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 00:30:35,316 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 00:30:35,316 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:30:35,316 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:30:35,353 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80c8055-1e1f-4a69-ae0f-5c951f005e29/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:30:35,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:30:35,354 INFO L168 Benchmark]: Toolchain (without parser) took 10921.17 ms. Allocated memory was 88.1 MB in the beginning and 188.7 MB in the end (delta: 100.7 MB). Free memory was 57.1 MB in the beginning and 64.5 MB in the end (delta: -7.4 MB). Peak memory consumption was 92.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:35,356 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 71.3 MB. Free memory is still 34.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:30:35,357 INFO L168 Benchmark]: CACSL2BoogieTranslator took 507.87 ms. Allocated memory is still 88.1 MB. Free memory was 56.9 MB in the beginning and 55.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:35,358 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.02 ms. Allocated memory is still 88.1 MB. Free memory was 55.6 MB in the beginning and 50.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:35,358 INFO L168 Benchmark]: Boogie Preprocessor took 96.78 ms. Allocated memory is still 88.1 MB. Free memory was 50.8 MB in the beginning and 47.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:35,359 INFO L168 Benchmark]: RCFGBuilder took 1167.47 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 47.5 MB in the beginning and 70.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:35,359 INFO L168 Benchmark]: TraceAbstraction took 8966.28 ms. Allocated memory was 107.0 MB in the beginning and 188.7 MB in the end (delta: 81.8 MB). Free memory was 70.4 MB in the beginning and 67.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 85.0 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:35,361 INFO L168 Benchmark]: Witness Printer took 68.93 ms. Allocated memory is still 188.7 MB. Free memory was 66.6 MB in the beginning and 64.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:35,364 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 71.3 MB. Free memory is still 34.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 507.87 ms. Allocated memory is still 88.1 MB. Free memory was 56.9 MB in the beginning and 55.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 104.02 ms. Allocated memory is still 88.1 MB. Free memory was 55.6 MB in the beginning and 50.8 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 96.78 ms. Allocated memory is still 88.1 MB. Free memory was 50.8 MB in the beginning and 47.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1167.47 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 47.5 MB in the beginning and 70.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8966.28 ms. Allocated memory was 107.0 MB in the beginning and 188.7 MB in the end (delta: 81.8 MB). Free memory was 70.4 MB in the beginning and 67.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 85.0 MB. Max. memory is 16.1 GB. * Witness Printer took 68.93 ms. Allocated memory is still 188.7 MB. Free memory was 66.6 MB in the beginning and 64.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 567]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((((this_expect <= 2 * ((this_expect + -2) / 2) + 2 && 5 <= q) && 0 <= P8 + 2147483648) && this_buffer_empty == 0) && P8 / 4294967296 <= 0) || ((this_buffer_empty == 0 && q == 0) && this_expect == 0) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (((((((this_expect <= 2 * ((this_expect + -1) / 2) + 1 && 0 <= P8 + 2147483648) && P8 / 4294967296 <= 0) && q == 4) && this_buffer_empty == 1) || ((((this_expect <= 2 * ((this_expect + -2) / 2) + 2 && 5 <= q) && 0 <= P8 + 2147483648) && this_buffer_empty == 0) && P8 / 4294967296 <= 0)) || ((this_buffer_empty == 0 && q == 0) && this_expect == 0)) || ((((q == 1 && this_expect <= 2 * ((this_expect + -2) / 2) + 2) && 0 <= P8 + 2147483648) && P8 / 4294967296 <= 0) && this_buffer_empty == 1)) || ((((this_expect <= 2 * ((this_expect + -1) / 2) + 1 && 0 <= P8 + 2147483648) && q == 3) && this_buffer_empty == 0) && P8 / 4294967296 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 109 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.3s, OverallIterations: 14, TraceHistogramMax: 11, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2187 SDtfs, 1989 SDslu, 5138 SDs, 0 SdLazy, 842 SolverSat, 194 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 309 GetRequests, 240 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=311occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 67 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 24 NumberOfFragments, 164 HoareAnnotationTreeSize, 4 FomulaSimplifications, 763 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 596 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 709 NumberOfCodeBlocks, 709 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 691 ConstructedInterpolants, 0 QuantifiedInterpolants, 401906 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1695 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 18 InterpolantComputations, 10 PerfectInterpolantSequences, 234/759 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 correct! Received shutdown request...