./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/num_conversion_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb940cb4e8580a7f29cd512663d7ddf095173e433385db93cb3bce78775a2871 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb940cb4e8580a7f29cd512663d7ddf095173e433385db93cb3bce78775a2871 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:08:29,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:08:29,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:08:29,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:08:29,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:08:29,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:08:29,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:08:29,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:08:29,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:08:29,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:08:29,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:08:29,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:08:29,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:08:29,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:08:29,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:08:29,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:08:29,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:08:29,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:08:29,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:08:29,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:08:29,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:08:29,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:08:29,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:08:29,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:08:29,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:08:29,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:08:29,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:08:29,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:08:29,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:08:29,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:08:29,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:08:29,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:08:29,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:08:29,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:08:29,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:08:29,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:08:29,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:08:29,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:08:29,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:08:29,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:08:29,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:08:29,384 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:08:29,410 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:08:29,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:08:29,411 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:08:29,411 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:08:29,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:08:29,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:08:29,412 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:08:29,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:08:29,413 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:08:29,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:08:29,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:08:29,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:08:29,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:08:29,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:08:29,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:08:29,414 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:08:29,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:08:29,415 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:08:29,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:08:29,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:08:29,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:08:29,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:08:29,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:08:29,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:08:29,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:08:29,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:08:29,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:08:29,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:08:29,417 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:08:29,417 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:08:29,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:08:29,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:08:29,418 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_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb940cb4e8580a7f29cd512663d7ddf095173e433385db93cb3bce78775a2871 [2021-10-21 20:08:29,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:08:29,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:08:29,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:08:29,669 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:08:29,670 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:08:29,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2021-10-21 20:08:29,737 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/data/9cb426c2c/6e0582f791c94f78a56a145fddecb339/FLAG524ea0c63 [2021-10-21 20:08:30,215 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:08:30,216 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/sv-benchmarks/c/bitvector/num_conversion_1.c [2021-10-21 20:08:30,221 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/data/9cb426c2c/6e0582f791c94f78a56a145fddecb339/FLAG524ea0c63 [2021-10-21 20:08:30,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/data/9cb426c2c/6e0582f791c94f78a56a145fddecb339 [2021-10-21 20:08:30,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:08:30,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:08:30,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:08:30,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:08:30,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:08:30,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:08:30" (1/1) ... [2021-10-21 20:08:30,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42fb9e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:30, skipping insertion in model container [2021-10-21 20:08:30,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:08:30" (1/1) ... [2021-10-21 20:08:30,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:08:30,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:08:30,788 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/sv-benchmarks/c/bitvector/num_conversion_1.c[368,381] [2021-10-21 20:08:30,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:08:30,814 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:08:30,824 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/sv-benchmarks/c/bitvector/num_conversion_1.c[368,381] [2021-10-21 20:08:30,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:08:30,840 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:08:30,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:30 WrapperNode [2021-10-21 20:08:30,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:08:30,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:08:30,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:08:30,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:08:30,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:30" (1/1) ... [2021-10-21 20:08:30,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:30" (1/1) ... [2021-10-21 20:08:30,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:08:30,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:08:30,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:08:30,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:08:30,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:30" (1/1) ... [2021-10-21 20:08:30,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:30" (1/1) ... [2021-10-21 20:08:30,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:30" (1/1) ... [2021-10-21 20:08:30,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:30" (1/1) ... [2021-10-21 20:08:30,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:30" (1/1) ... [2021-10-21 20:08:30,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:30" (1/1) ... [2021-10-21 20:08:30,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:30" (1/1) ... [2021-10-21 20:08:30,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:08:30,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:08:30,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:08:30,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:08:30,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:30" (1/1) ... [2021-10-21 20:08:30,945 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:08:30,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:08:30,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:08:31,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:08:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:08:31,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:08:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:08:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:08:31,235 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:08:31,236 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-21 20:08:31,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:08:31 BoogieIcfgContainer [2021-10-21 20:08:31,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:08:31,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:08:31,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:08:31,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:08:31,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:08:30" (1/3) ... [2021-10-21 20:08:31,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b76762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:08:31, skipping insertion in model container [2021-10-21 20:08:31,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:30" (2/3) ... [2021-10-21 20:08:31,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b76762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:08:31, skipping insertion in model container [2021-10-21 20:08:31,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:08:31" (3/3) ... [2021-10-21 20:08:31,247 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2021-10-21 20:08:31,252 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:08:31,252 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:08:31,299 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:08:31,305 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:08:31,306 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:08:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:31,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:08:31,324 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:31,325 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:08:31,326 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:31,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:31,331 INFO L82 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2021-10-21 20:08:31,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:08:31,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10066397] [2021-10-21 20:08:31,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:08:31,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:08:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:08:31,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:31,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:08:31,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10066397] [2021-10-21 20:08:31,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10066397] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:08:31,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:08:31,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:08:31,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962931807] [2021-10-21 20:08:31,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:08:31,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:08:31,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:08:31,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:08:31,491 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:31,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:08:31,504 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-10-21 20:08:31,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:08:31,507 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-21 20:08:31,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:08:31,514 INFO L225 Difference]: With dead ends: 21 [2021-10-21 20:08:31,515 INFO L226 Difference]: Without dead ends: 9 [2021-10-21 20:08:31,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:08:31,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-21 20:08:31,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-21 20:08:31,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-21 20:08:31,539 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2021-10-21 20:08:31,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:08:31,539 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-21 20:08:31,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:31,540 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-10-21 20:08:31,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:08:31,540 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:31,541 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:08:31,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:08:31,541 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:31,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:31,542 INFO L82 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2021-10-21 20:08:31,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:08:31,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448918271] [2021-10-21 20:08:31,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:08:31,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:08:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:08:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:31,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:08:31,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448918271] [2021-10-21 20:08:31,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448918271] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:08:31,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:08:31,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:08:31,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201462999] [2021-10-21 20:08:31,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:08:31,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:08:31,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:08:31,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:08:31,608 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:31,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:08:31,620 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-10-21 20:08:31,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:08:31,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-21 20:08:31,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:08:31,621 INFO L225 Difference]: With dead ends: 16 [2021-10-21 20:08:31,621 INFO L226 Difference]: Without dead ends: 12 [2021-10-21 20:08:31,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:08:31,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-21 20:08:31,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2021-10-21 20:08:31,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:31,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-21 20:08:31,625 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2021-10-21 20:08:31,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:08:31,626 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-21 20:08:31,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:31,626 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-10-21 20:08:31,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 20:08:31,627 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:31,627 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:08:31,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:08:31,628 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:31,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:31,629 INFO L82 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2021-10-21 20:08:31,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:08:31,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055312043] [2021-10-21 20:08:31,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:08:31,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:08:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:08:31,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:31,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:08:31,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055312043] [2021-10-21 20:08:31,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055312043] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:08:31,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780920081] [2021-10-21 20:08:31,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:08:31,711 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:08:31,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:08:31,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:08:31,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:08:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:08:31,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:08:31,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:08:31,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:31,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780920081] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:08:31,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:08:31,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-21 20:08:31,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996846174] [2021-10-21 20:08:31,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:08:31,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:08:31,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:08:31,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:08:31,966 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:31,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:08:31,986 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2021-10-21 20:08:31,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:08:31,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-21 20:08:31,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:08:31,988 INFO L225 Difference]: With dead ends: 19 [2021-10-21 20:08:31,988 INFO L226 Difference]: Without dead ends: 15 [2021-10-21 20:08:31,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:08:31,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-21 20:08:31,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2021-10-21 20:08:31,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:31,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-10-21 20:08:31,992 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2021-10-21 20:08:31,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:08:31,992 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-21 20:08:31,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:31,993 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-10-21 20:08:31,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:08:31,994 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:31,994 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-21 20:08:32,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:08:32,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:08:32,207 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:32,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:32,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1950053902, now seen corresponding path program 2 times [2021-10-21 20:08:32,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:08:32,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507775717] [2021-10-21 20:08:32,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:08:32,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:08:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:08:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:32,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:08:32,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507775717] [2021-10-21 20:08:32,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507775717] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:08:32,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279422751] [2021-10-21 20:08:32,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:08:32,308 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:08:32,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:08:32,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:08:32,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 20:08:32,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:08:32,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:08:32,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:08:32,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:08:32,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:32,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279422751] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:08:32,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:08:32,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-21 20:08:32,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762857026] [2021-10-21 20:08:32,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:08:32,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:08:32,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:08:32,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:08:32,432 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:32,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:08:32,461 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-10-21 20:08:32,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:08:32,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-21 20:08:32,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:08:32,463 INFO L225 Difference]: With dead ends: 22 [2021-10-21 20:08:32,463 INFO L226 Difference]: Without dead ends: 18 [2021-10-21 20:08:32,464 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 33.0ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:08:32,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-21 20:08:32,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2021-10-21 20:08:32,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:32,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-10-21 20:08:32,468 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 12 [2021-10-21 20:08:32,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:08:32,468 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-10-21 20:08:32,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:32,469 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-10-21 20:08:32,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 20:08:32,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:32,470 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-21 20:08:32,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:08:32,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:08:32,696 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:32,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:32,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1268104729, now seen corresponding path program 3 times [2021-10-21 20:08:32,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:08:32,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896524044] [2021-10-21 20:08:32,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:08:32,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:08:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:08:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:32,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:08:32,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896524044] [2021-10-21 20:08:32,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896524044] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:08:32,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214314389] [2021-10-21 20:08:32,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:08:32,797 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:08:32,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:08:32,798 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:08:32,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 20:08:32,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-21 20:08:32,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:08:32,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 20:08:32,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:08:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:33,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214314389] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:08:33,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:08:33,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-21 20:08:33,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462600765] [2021-10-21 20:08:33,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:08:33,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:08:33,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:08:33,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:08:33,151 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:33,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:08:33,249 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2021-10-21 20:08:33,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:08:33,250 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-21 20:08:33,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:08:33,253 INFO L225 Difference]: With dead ends: 35 [2021-10-21 20:08:33,254 INFO L226 Difference]: Without dead ends: 31 [2021-10-21 20:08:33,259 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 57.8ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:08:33,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-21 20:08:33,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 19. [2021-10-21 20:08:33,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:33,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-10-21 20:08:33,271 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 15 [2021-10-21 20:08:33,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:08:33,272 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-10-21 20:08:33,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:33,272 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-10-21 20:08:33,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 20:08:33,273 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:33,273 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-10-21 20:08:33,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:08:33,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:08:33,496 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:33,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:33,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 4 times [2021-10-21 20:08:33,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:08:33,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798129779] [2021-10-21 20:08:33,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:08:33,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:08:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:08:33,670 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:33,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:08:33,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798129779] [2021-10-21 20:08:33,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798129779] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:08:33,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495251002] [2021-10-21 20:08:33,671 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 20:08:33,671 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:08:33,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:08:33,674 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:08:33,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 20:08:33,741 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 20:08:33,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:08:33,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 20:08:33,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:08:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:33,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495251002] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:08:33,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:08:33,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-10-21 20:08:33,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855127486] [2021-10-21 20:08:33,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 20:08:33,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:08:33,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 20:08:33,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:08:33,846 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:33,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:08:33,911 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2021-10-21 20:08:33,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:08:33,912 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-21 20:08:33,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:08:33,912 INFO L225 Difference]: With dead ends: 28 [2021-10-21 20:08:33,912 INFO L226 Difference]: Without dead ends: 24 [2021-10-21 20:08:33,913 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 54.7ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:08:33,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-21 20:08:33,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-10-21 20:08:33,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:33,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2021-10-21 20:08:33,917 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 18 [2021-10-21 20:08:33,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:08:33,917 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-10-21 20:08:33,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:33,918 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2021-10-21 20:08:33,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 20:08:33,918 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:33,919 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2021-10-21 20:08:33,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:08:34,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-21 20:08:34,119 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:34,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:34,120 INFO L82 PathProgramCache]: Analyzing trace with hash -133759111, now seen corresponding path program 5 times [2021-10-21 20:08:34,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:08:34,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183495071] [2021-10-21 20:08:34,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:08:34,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:08:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:08:34,236 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:34,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:08:34,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183495071] [2021-10-21 20:08:34,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183495071] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:08:34,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850870634] [2021-10-21 20:08:34,237 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 20:08:34,237 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:08:34,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:08:34,238 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:08:34,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 20:08:34,323 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-21 20:08:34,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:08:34,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-21 20:08:34,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:08:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:34,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850870634] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:08:34,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:08:34,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-21 20:08:34,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123790156] [2021-10-21 20:08:34,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 20:08:34,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:08:34,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 20:08:34,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:08:34,478 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:34,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:08:34,574 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2021-10-21 20:08:34,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:08:34,575 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-21 20:08:34,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:08:34,576 INFO L225 Difference]: With dead ends: 31 [2021-10-21 20:08:34,576 INFO L226 Difference]: Without dead ends: 27 [2021-10-21 20:08:34,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 79.7ms TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:08:34,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-21 20:08:34,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-10-21 20:08:34,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:34,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2021-10-21 20:08:34,581 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 21 [2021-10-21 20:08:34,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:08:34,581 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-10-21 20:08:34,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:34,581 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2021-10-21 20:08:34,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 20:08:34,582 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:34,582 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1] [2021-10-21 20:08:34,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:08:34,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:08:34,808 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:34,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:34,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1786738894, now seen corresponding path program 6 times [2021-10-21 20:08:34,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:08:34,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657633574] [2021-10-21 20:08:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:08:34,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:08:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:08:34,933 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:34,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:08:34,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657633574] [2021-10-21 20:08:34,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657633574] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:08:34,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659312288] [2021-10-21 20:08:34,934 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 20:08:34,934 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:08:34,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:08:34,943 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:08:34,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 20:08:35,040 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-21 20:08:35,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:08:35,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 20:08:35,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:08:35,201 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:35,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659312288] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:08:35,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:08:35,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-21 20:08:35,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145484538] [2021-10-21 20:08:35,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 20:08:35,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:08:35,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 20:08:35,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-21 20:08:35,204 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:35,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:08:35,292 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2021-10-21 20:08:35,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:08:35,293 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-21 20:08:35,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:08:35,294 INFO L225 Difference]: With dead ends: 34 [2021-10-21 20:08:35,294 INFO L226 Difference]: Without dead ends: 30 [2021-10-21 20:08:35,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 100.3ms TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-21 20:08:35,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-21 20:08:35,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2021-10-21 20:08:35,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:35,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-10-21 20:08:35,299 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 24 [2021-10-21 20:08:35,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:08:35,299 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-10-21 20:08:35,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:35,300 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2021-10-21 20:08:35,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-21 20:08:35,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:35,301 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1] [2021-10-21 20:08:35,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:08:35,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:08:35,516 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:35,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:35,516 INFO L82 PathProgramCache]: Analyzing trace with hash 387561689, now seen corresponding path program 7 times [2021-10-21 20:08:35,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:08:35,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458596406] [2021-10-21 20:08:35,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:08:35,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:08:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:08:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:35,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:08:35,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458596406] [2021-10-21 20:08:35,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458596406] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:08:35,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043833091] [2021-10-21 20:08:35,690 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 20:08:35,691 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:08:35,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:08:35,692 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:08:35,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 20:08:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:08:35,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 20:08:35,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:08:35,972 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:35,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043833091] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:08:35,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:08:35,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-10-21 20:08:35,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031239467] [2021-10-21 20:08:35,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-21 20:08:35,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:08:35,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-21 20:08:35,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-10-21 20:08:35,974 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:36,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:08:36,085 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2021-10-21 20:08:36,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 20:08:36,090 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-21 20:08:36,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:08:36,091 INFO L225 Difference]: With dead ends: 37 [2021-10-21 20:08:36,091 INFO L226 Difference]: Without dead ends: 33 [2021-10-21 20:08:36,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 129.7ms TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-10-21 20:08:36,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-21 20:08:36,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2021-10-21 20:08:36,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:36,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2021-10-21 20:08:36,096 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 27 [2021-10-21 20:08:36,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:08:36,097 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2021-10-21 20:08:36,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:36,097 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2021-10-21 20:08:36,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-21 20:08:36,098 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:36,098 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2021-10-21 20:08:36,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:08:36,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-21 20:08:36,298 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:36,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:36,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1720528430, now seen corresponding path program 8 times [2021-10-21 20:08:36,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:08:36,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801724044] [2021-10-21 20:08:36,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:08:36,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:08:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:08:36,331 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:08:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:08:36,366 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:08:36,366 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:08:36,369 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:08:36,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 20:08:36,377 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:08:36,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:08:36 BoogieIcfgContainer [2021-10-21 20:08:36,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:08:36,415 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:08:36,415 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:08:36,415 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:08:36,415 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:08:31" (3/4) ... [2021-10-21 20:08:36,418 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:08:36,418 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:08:36,420 INFO L168 Benchmark]: Toolchain (without parser) took 5817.81 ms. Allocated memory was 109.1 MB in the beginning and 153.1 MB in the end (delta: 44.0 MB). Free memory was 76.6 MB in the beginning and 78.7 MB in the end (delta: -2.1 MB). Peak memory consumption was 42.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:36,420 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 109.1 MB. Free memory is still 63.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:08:36,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.70 ms. Allocated memory was 109.1 MB in the beginning and 153.1 MB in the end (delta: 44.0 MB). Free memory was 76.6 MB in the beginning and 127.2 MB in the end (delta: -50.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:36,421 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.16 ms. Allocated memory is still 153.1 MB. Free memory was 127.2 MB in the beginning and 125.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:36,422 INFO L168 Benchmark]: Boogie Preprocessor took 45.46 ms. Allocated memory is still 153.1 MB. Free memory was 125.3 MB in the beginning and 124.5 MB in the end (delta: 835.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:36,422 INFO L168 Benchmark]: RCFGBuilder took 303.58 ms. Allocated memory is still 153.1 MB. Free memory was 124.5 MB in the beginning and 115.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:36,423 INFO L168 Benchmark]: TraceAbstraction took 5174.50 ms. Allocated memory is still 153.1 MB. Free memory was 114.7 MB in the beginning and 78.7 MB in the end (delta: 36.0 MB). Peak memory consumption was 39.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:36,423 INFO L168 Benchmark]: Witness Printer took 3.95 ms. Allocated memory is still 153.1 MB. Free memory is still 78.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:08:36,425 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 109.1 MB. Free memory is still 63.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 238.70 ms. Allocated memory was 109.1 MB in the beginning and 153.1 MB in the end (delta: 44.0 MB). Free memory was 76.6 MB in the beginning and 127.2 MB in the end (delta: -50.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.16 ms. Allocated memory is still 153.1 MB. Free memory was 127.2 MB in the beginning and 125.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.46 ms. Allocated memory is still 153.1 MB. Free memory was 125.3 MB in the beginning and 124.5 MB in the end (delta: 835.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 303.58 ms. Allocated memory is still 153.1 MB. Free memory was 124.5 MB in the beginning and 115.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5174.50 ms. Allocated memory is still 153.1 MB. Free memory was 114.7 MB in the beginning and 78.7 MB in the end (delta: 36.0 MB). Peak memory consumption was 39.1 MB. Max. memory is 16.1 GB. * Witness Printer took 3.95 ms. Allocated memory is still 153.1 MB. Free memory is still 78.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 8]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftLeft at line 24, overapproximation of bitwiseAnd at line 25. Possible FailurePath: [L16] unsigned char x; [L17] unsigned char y; [L18] unsigned char c; [L20] x = 37 [L21] y = 0 [L22] c = 0 [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND FALSE !(c < (unsigned char)8) [L7] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5077.9ms, OverallIterations: 10, TraceHistogramMax: 8, EmptinessCheckTime: 14.6ms, AutomataDifference: 597.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 130 SDtfs, 132 SDslu, 623 SDs, 0 SdLazy, 645 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 344.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 473.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=9, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 50.4ms AutomataMinimizationTime, 9 MinimizatonAttempts, 26 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 70.5ms SsaConstructionTime, 388.9ms SatisfiabilityAnalysisTime, 1818.5ms InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 248 ConstructedInterpolants, 0 QuantifiedInterpolants, 1326 SizeOfPredicates, 9 NumberOfNonLiveVariables, 455 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 0/392 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-21 20:08:36,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:08:38,812 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-10-21 20:08:38,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:08:38,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:08:38,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:08:38,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:08:38,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:08:38,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:08:38,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:08:38,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:08:38,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:08:38,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:08:38,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:08:38,945 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 20:08:38,985 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:08:38,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:08:38,986 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:08:38,987 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:08:38,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:08:38,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:08:38,990 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:08:38,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:08:38,990 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:08:38,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:08:38,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:08:38,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:08:38,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:08:38,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:08:38,993 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 20:08:38,993 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 20:08:38,993 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:08:38,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:08:38,994 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:08:38,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:08:38,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:08:38,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:08:38,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:08:38,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:08:38,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:08:38,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:08:38,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:08:38,996 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 20:08:38,997 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 20:08:38,997 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:08:38,997 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:08:38,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:08:38,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:08:38,998 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 20:08:38,998 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb940cb4e8580a7f29cd512663d7ddf095173e433385db93cb3bce78775a2871 [2021-10-21 20:08:39,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:08:39,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:08:39,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:08:39,443 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:08:39,446 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:08:39,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2021-10-21 20:08:39,523 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/data/1f3437b89/c067266124f64441a935cfaa8788d917/FLAGd2fdd47da [2021-10-21 20:08:40,066 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:08:40,067 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/sv-benchmarks/c/bitvector/num_conversion_1.c [2021-10-21 20:08:40,073 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/data/1f3437b89/c067266124f64441a935cfaa8788d917/FLAGd2fdd47da [2021-10-21 20:08:40,395 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/data/1f3437b89/c067266124f64441a935cfaa8788d917 [2021-10-21 20:08:40,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:08:40,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:08:40,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:08:40,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:08:40,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:08:40,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:08:40" (1/1) ... [2021-10-21 20:08:40,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2ba4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:40, skipping insertion in model container [2021-10-21 20:08:40,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:08:40" (1/1) ... [2021-10-21 20:08:40,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:08:40,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:08:40,613 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/sv-benchmarks/c/bitvector/num_conversion_1.c[368,381] [2021-10-21 20:08:40,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:08:40,651 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:08:40,667 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/sv-benchmarks/c/bitvector/num_conversion_1.c[368,381] [2021-10-21 20:08:40,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:08:40,695 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:08:40,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:40 WrapperNode [2021-10-21 20:08:40,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:08:40,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:08:40,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:08:40,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:08:40,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:40" (1/1) ... [2021-10-21 20:08:40,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:40" (1/1) ... [2021-10-21 20:08:40,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:08:40,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:08:40,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:08:40,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:08:40,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:40" (1/1) ... [2021-10-21 20:08:40,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:40" (1/1) ... [2021-10-21 20:08:40,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:40" (1/1) ... [2021-10-21 20:08:40,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:40" (1/1) ... [2021-10-21 20:08:40,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:40" (1/1) ... [2021-10-21 20:08:40,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:40" (1/1) ... [2021-10-21 20:08:40,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:40" (1/1) ... [2021-10-21 20:08:40,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:08:40,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:08:40,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:08:40,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:08:40,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:40" (1/1) ... [2021-10-21 20:08:40,796 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:08:40,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:08:40,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:08:40,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:08:40,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:08:40,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:08:40,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 20:08:40,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:08:41,043 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:08:41,043 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-21 20:08:41,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:08:41 BoogieIcfgContainer [2021-10-21 20:08:41,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:08:41,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:08:41,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:08:41,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:08:41,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:08:40" (1/3) ... [2021-10-21 20:08:41,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eda1967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:08:41, skipping insertion in model container [2021-10-21 20:08:41,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:08:40" (2/3) ... [2021-10-21 20:08:41,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eda1967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:08:41, skipping insertion in model container [2021-10-21 20:08:41,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:08:41" (3/3) ... [2021-10-21 20:08:41,052 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2021-10-21 20:08:41,057 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:08:41,058 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:08:41,103 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:08:41,109 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:08:41,109 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:08:41,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:41,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:08:41,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:41,126 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:08:41,127 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:41,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:41,132 INFO L82 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2021-10-21 20:08:41,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:08:41,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225522250] [2021-10-21 20:08:41,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:08:41,145 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:08:41,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:08:41,150 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:08:41,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 20:08:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:08:41,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-21 20:08:41,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:08:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:41,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:08:41,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:41,297 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:08:41,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225522250] [2021-10-21 20:08:41,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225522250] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:08:41,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:08:41,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 20:08:41,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95364793] [2021-10-21 20:08:41,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:08:41,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:08:41,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:08:41,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:08:41,319 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:41,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:08:41,331 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-10-21 20:08:41,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:08:41,332 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-21 20:08:41,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:08:41,339 INFO L225 Difference]: With dead ends: 21 [2021-10-21 20:08:41,340 INFO L226 Difference]: Without dead ends: 9 [2021-10-21 20:08:41,342 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:08:41,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-21 20:08:41,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-21 20:08:41,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:41,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-21 20:08:41,387 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2021-10-21 20:08:41,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:08:41,388 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-21 20:08:41,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:41,389 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-10-21 20:08:41,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:08:41,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:41,390 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:08:41,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:08:41,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:08:41,602 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:41,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:41,607 INFO L82 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2021-10-21 20:08:41,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:08:41,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428782205] [2021-10-21 20:08:41,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:08:41,611 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:08:41,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:08:41,612 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:08:41,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 20:08:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:08:41,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:08:41,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:08:41,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:41,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:08:41,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:41,791 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:08:41,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428782205] [2021-10-21 20:08:41,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428782205] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:08:41,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:08:41,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-21 20:08:41,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739197160] [2021-10-21 20:08:41,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:08:41,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:08:41,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:08:41,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:08:41,796 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:41,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:08:41,814 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-10-21 20:08:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:08:41,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-21 20:08:41,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:08:41,815 INFO L225 Difference]: With dead ends: 17 [2021-10-21 20:08:41,815 INFO L226 Difference]: Without dead ends: 13 [2021-10-21 20:08:41,816 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:08:41,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-21 20:08:41,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-21 20:08:41,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:41,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-10-21 20:08:41,820 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 6 [2021-10-21 20:08:41,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:08:41,821 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-21 20:08:41,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:41,821 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-10-21 20:08:41,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:08:41,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:41,822 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-21 20:08:41,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:08:42,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:08:42,032 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:42,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:42,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1950053902, now seen corresponding path program 1 times [2021-10-21 20:08:42,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:08:42,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022053479] [2021-10-21 20:08:42,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:08:42,035 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:08:42,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:08:42,037 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:08:42,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 20:08:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:08:42,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:08:42,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:08:42,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:08:42,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:08:42,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:08:42,281 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:08:42,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022053479] [2021-10-21 20:08:42,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022053479] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:08:42,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:08:42,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-21 20:08:42,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466904380] [2021-10-21 20:08:42,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:08:42,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:08:42,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:08:42,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:08:42,293 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:42,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:08:42,361 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-10-21 20:08:42,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:08:42,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-21 20:08:42,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:08:42,362 INFO L225 Difference]: With dead ends: 28 [2021-10-21 20:08:42,363 INFO L226 Difference]: Without dead ends: 19 [2021-10-21 20:08:42,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 39.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:08:42,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-21 20:08:42,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2021-10-21 20:08:42,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:42,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-21 20:08:42,367 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 12 [2021-10-21 20:08:42,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:08:42,367 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-21 20:08:42,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:42,368 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-21 20:08:42,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:08:42,368 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:42,369 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:08:42,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:08:42,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:08:42,579 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:42,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:42,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1664855024, now seen corresponding path program 1 times [2021-10-21 20:08:42,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:08:42,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083270998] [2021-10-21 20:08:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:08:42,582 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:08:42,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:08:42,583 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:08:42,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 20:08:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:08:42,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:08:42,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:08:42,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:42,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:08:42,797 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:08:42,797 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:08:42,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083270998] [2021-10-21 20:08:42,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083270998] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 20:08:42,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:08:42,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-21 20:08:42,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584402397] [2021-10-21 20:08:42,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:08:42,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:08:42,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:08:42,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:08:42,801 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:42,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:08:42,870 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2021-10-21 20:08:42,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:08:42,871 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-21 20:08:42,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:08:42,872 INFO L225 Difference]: With dead ends: 29 [2021-10-21 20:08:42,872 INFO L226 Difference]: Without dead ends: 25 [2021-10-21 20:08:42,873 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 62.2ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:08:42,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-21 20:08:42,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-21 20:08:42,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:42,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2021-10-21 20:08:42,878 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 12 [2021-10-21 20:08:42,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:08:42,879 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2021-10-21 20:08:42,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:42,879 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2021-10-21 20:08:42,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 20:08:42,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:42,880 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:08:42,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:08:43,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:08:43,099 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:43,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:43,099 INFO L82 PathProgramCache]: Analyzing trace with hash 2085526576, now seen corresponding path program 2 times [2021-10-21 20:08:43,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:08:43,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883251749] [2021-10-21 20:08:43,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:08:43,100 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:08:43,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:08:43,101 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:08:43,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-21 20:08:43,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:08:43,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:08:43,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:08:43,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:08:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 20:08:43,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:08:43,450 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-21 20:08:43,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:08:43,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883251749] [2021-10-21 20:08:43,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883251749] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 20:08:43,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:08:43,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-21 20:08:43,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942431151] [2021-10-21 20:08:43,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:08:43,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:08:43,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:08:43,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:08:43,453 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:43,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:08:43,673 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2021-10-21 20:08:43,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 20:08:43,676 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-21 20:08:43,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:08:43,677 INFO L225 Difference]: With dead ends: 54 [2021-10-21 20:08:43,677 INFO L226 Difference]: Without dead ends: 39 [2021-10-21 20:08:43,678 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 186.4ms TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-10-21 20:08:43,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-21 20:08:43,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2021-10-21 20:08:43,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:43,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-10-21 20:08:43,683 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 24 [2021-10-21 20:08:43,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:08:43,684 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-10-21 20:08:43,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:43,684 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-10-21 20:08:43,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 20:08:43,685 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:43,685 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-21 20:08:43,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:08:43,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:08:43,896 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:43,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:43,896 INFO L82 PathProgramCache]: Analyzing trace with hash -986835344, now seen corresponding path program 3 times [2021-10-21 20:08:43,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:08:43,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855212067] [2021-10-21 20:08:43,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:08:43,897 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:08:43,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:08:43,898 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:08:43,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-21 20:08:43,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 20:08:43,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:08:44,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:08:44,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:08:44,186 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-21 20:08:44,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:08:44,580 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-21 20:08:44,580 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:08:44,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855212067] [2021-10-21 20:08:44,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855212067] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 20:08:44,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:08:44,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-21 20:08:44,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32094669] [2021-10-21 20:08:44,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:08:44,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:08:44,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:08:44,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:08:44,586 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:44,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:08:44,784 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2021-10-21 20:08:44,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:08:44,785 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-21 20:08:44,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:08:44,786 INFO L225 Difference]: With dead ends: 53 [2021-10-21 20:08:44,786 INFO L226 Difference]: Without dead ends: 31 [2021-10-21 20:08:44,787 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 250.8ms TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2021-10-21 20:08:44,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-21 20:08:44,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-10-21 20:08:44,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:44,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-10-21 20:08:44,792 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 24 [2021-10-21 20:08:44,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:08:44,793 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-10-21 20:08:44,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:44,793 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-10-21 20:08:44,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-21 20:08:44,794 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:44,794 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2021-10-21 20:08:44,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:08:45,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:08:45,005 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:45,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:45,005 INFO L82 PathProgramCache]: Analyzing trace with hash -29656432, now seen corresponding path program 4 times [2021-10-21 20:08:45,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:08:45,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134639263] [2021-10-21 20:08:45,006 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 20:08:45,008 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:08:45,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:08:45,009 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:08:45,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-21 20:08:45,132 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 20:08:45,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:08:45,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 20:08:45,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:08:45,603 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-21 20:08:45,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:08:46,311 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-21 20:08:46,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:08:46,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134639263] [2021-10-21 20:08:46,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134639263] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-21 20:08:46,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:08:46,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-10-21 20:08:46,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680323583] [2021-10-21 20:08:46,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-21 20:08:46,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:08:46,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-21 20:08:46,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2021-10-21 20:08:46,314 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:47,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:08:47,247 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2021-10-21 20:08:47,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-21 20:08:47,248 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-21 20:08:47,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:08:47,249 INFO L225 Difference]: With dead ends: 53 [2021-10-21 20:08:47,249 INFO L226 Difference]: Without dead ends: 37 [2021-10-21 20:08:47,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1260.6ms TimeCoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2021-10-21 20:08:47,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-21 20:08:47,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-21 20:08:47,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-10-21 20:08:47,261 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 30 [2021-10-21 20:08:47,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:08:47,262 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-10-21 20:08:47,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:47,262 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-10-21 20:08:47,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-21 20:08:47,263 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:08:47,264 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 6, 4, 1, 1, 1, 1, 1, 1] [2021-10-21 20:08:47,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:08:47,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:08:47,474 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:08:47,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:08:47,475 INFO L82 PathProgramCache]: Analyzing trace with hash -166593550, now seen corresponding path program 5 times [2021-10-21 20:08:47,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:08:47,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122335750] [2021-10-21 20:08:47,476 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 20:08:47,476 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:08:47,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:08:47,477 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:08:47,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-21 20:08:47,602 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-10-21 20:08:47,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:08:47,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 20:08:47,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:08:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:08:48,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:08:49,202 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:08:49,202 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:08:49,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122335750] [2021-10-21 20:08:49,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122335750] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:08:49,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:08:49,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18, 18] imperfect sequences [] total 34 [2021-10-21 20:08:49,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553553709] [2021-10-21 20:08:49,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-21 20:08:49,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:08:49,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-21 20:08:49,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=746, Unknown=0, NotChecked=0, Total=1122 [2021-10-21 20:08:49,205 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:49,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:08:49,335 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-10-21 20:08:49,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 20:08:49,336 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-21 20:08:49,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:08:49,337 INFO L225 Difference]: With dead ends: 39 [2021-10-21 20:08:49,337 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:08:49,338 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 860.9ms TimeCoverageRelationStatistics Valid=376, Invalid=746, Unknown=0, NotChecked=0, Total=1122 [2021-10-21 20:08:49,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:08:49,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:08:49,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:49,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:08:49,338 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-10-21 20:08:49,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:08:49,338 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:08:49,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:08:49,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:08:49,340 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:08:49,342 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:08:49,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:08:49,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:08:49,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:08:49,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:08:49,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:08:49,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:08:50,405 INFO L860 garLoopResultBuilder]: At program point L33(lines 14 34) the Hoare annotation is: true [2021-10-21 20:08:50,405 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:08:50,405 INFO L853 garLoopResultBuilder]: At program point L23-2(lines 23 30) the Hoare annotation is: (let ((.cse8 ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ULTIMATE.start_main_~c~0) (_ bv1 32)))))) (let ((.cse6 ((_ zero_extend 24) ULTIMATE.start_main_~x~0)) (.cse2 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse8 (_ bv1 32))))) (.cse7 ((_ zero_extend 24) ULTIMATE.start_main_~y~0))) (let ((.cse9 (= ULTIMATE.start_main_~y~0 (_ bv37 8))) (.cse10 (= .cse6 ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse2))) .cse7))))) (.cse0 (= ULTIMATE.start_main_~y~0 (_ bv5 8))) (.cse1 (= ULTIMATE.start_main_~x~0 (_ bv37 8))) (.cse5 (= (_ bv1 8) ULTIMATE.start_main_~y~0))) (or (and .cse0 .cse1 (bvslt .cse2 (_ bv8 32)) (exists ((v_ULTIMATE.start_main_~c~0_50 (_ BitVec 8))) (let ((.cse4 ((_ zero_extend 24) v_ULTIMATE.start_main_~c~0_50))) (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse4 (_ bv1 32)))) (_ bv1 32)))))) (and (= ULTIMATE.start_main_~c~0 ((_ extract 7 0) (bvadd .cse3 (_ bv1 32)))) (bvslt .cse4 (_ bv8 32)) (bvslt .cse3 (_ bv8 32)))))) (= ULTIMATE.start_main_~bit~0 (_ bv4 8))) (and (= ULTIMATE.start_main_~y~0 (_ bv0 8)) .cse1 (= ULTIMATE.start_main_~c~0 (_ bv0 8))) (and (= (_ bv1 8) ULTIMATE.start_main_~bit~0) .cse1 (= (_ bv1 8) ULTIMATE.start_main_~c~0) .cse5) (and (= (_ bv0 32) ((_ zero_extend 24) ULTIMATE.start_main_~bit~0)) (= .cse6 ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse7 ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse8)))))) ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (_ bv1 32) .cse2))))))))))))) .cse9 .cse10) (and .cse0 .cse1 (= (_ bv4 8) ULTIMATE.start_main_~c~0)) (and (exists ((v_ULTIMATE.start_main_~c~0_28 (_ BitVec 8))) (let ((.cse11 ((_ zero_extend 24) v_ULTIMATE.start_main_~c~0_28))) (and (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv37 32) ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse11)))))) (_ bv0 32))) (= ULTIMATE.start_main_~c~0 ((_ extract 7 0) (bvadd .cse11 (_ bv1 32))))))) (exists ((v_ULTIMATE.start_main_~c~0_50 (_ BitVec 8))) (let ((.cse13 ((_ zero_extend 24) v_ULTIMATE.start_main_~c~0_50))) (let ((.cse12 ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse13 (_ bv1 32)))) (_ bv1 32)))) (_ bv1 32)))) (_ bv1 32)))) (_ bv1 32)))))) (and (= ULTIMATE.start_main_~c~0 ((_ extract 7 0) (bvadd .cse12 (_ bv1 32)))) (bvslt .cse12 (_ bv8 32)) (bvslt .cse13 (_ bv8 32)))))) .cse9 .cse10) (and .cse0 (= ULTIMATE.start_main_~c~0 (_ bv5 8)) .cse1) (and .cse1 (= (_ bv2 8) ULTIMATE.start_main_~c~0) .cse5))))) [2021-10-21 20:08:50,405 INFO L857 garLoopResultBuilder]: For program point L23-3(lines 23 30) no Hoare annotation was computed. [2021-10-21 20:08:50,405 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-10-21 20:08:50,405 INFO L860 garLoopResultBuilder]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2021-10-21 20:08:50,406 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:08:50,406 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:08:50,406 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:08:50,406 INFO L857 garLoopResultBuilder]: For program point L26(lines 26 28) no Hoare annotation was computed. [2021-10-21 20:08:50,406 INFO L857 garLoopResultBuilder]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2021-10-21 20:08:50,406 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2021-10-21 20:08:50,406 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-10-21 20:08:50,411 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:08:50,418 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,418 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,419 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,419 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2021-10-21 20:08:50,419 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2021-10-21 20:08:50,420 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,420 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,420 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,431 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,431 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,432 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,432 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2021-10-21 20:08:50,432 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2021-10-21 20:08:50,432 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,433 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,433 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:08:50 BoogieIcfgContainer [2021-10-21 20:08:50,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:08:50,440 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:08:50,440 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:08:50,440 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:08:50,441 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:08:41" (3/4) ... [2021-10-21 20:08:50,443 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:08:50,452 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-21 20:08:50,452 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:08:50,452 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:08:50,452 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:08:50,474 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((y == 5bv8 && x == 37bv8) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && (\exists v_ULTIMATE.start_main_~c~0_50 : bv8 :: (c == ~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0] && ~bvslt32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32))) && bit == 4bv8) || ((y == 0bv8 && x == 37bv8) && c == 0bv8)) || (((1bv8 == bit && x == 37bv8) && 1bv8 == c) && 1bv8 == y)) || (((0bv32 == ~zero_extendFrom8To32(bit) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]))[7:0]))[7:0]), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(1bv32, ~zero_extendFrom8To32(~bvadd64(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]))[7:0]))[7:0])) && y == 37bv8) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]), ~zero_extendFrom8To32(y))[7:0]))) || ((y == 5bv8 && x == 37bv8) && 4bv8 == c)) || ((((\exists v_ULTIMATE.start_main_~c~0_28 : bv8 :: !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28))[7:0]))[7:0]) == 0bv32) && c == ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28), 1bv32)[7:0]) && (\exists v_ULTIMATE.start_main_~c~0_50 : bv8 :: (c == ~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0] && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 8bv32))) && y == 37bv8) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]), ~zero_extendFrom8To32(y))[7:0]))) || ((y == 5bv8 && c == 5bv8) && x == 37bv8)) || ((x == 37bv8 && 2bv8 == c) && 1bv8 == y) [2021-10-21 20:08:50,481 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:08:50,481 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:08:50,482 INFO L168 Benchmark]: Toolchain (without parser) took 10074.69 ms. Allocated memory was 62.9 MB in the beginning and 119.5 MB in the end (delta: 56.6 MB). Free memory was 43.3 MB in the beginning and 49.4 MB in the end (delta: -6.2 MB). Peak memory consumption was 53.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:50,483 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 62.9 MB. Free memory is still 44.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:08:50,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.09 ms. Allocated memory is still 62.9 MB. Free memory was 43.0 MB in the beginning and 33.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:50,484 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.27 ms. Allocated memory is still 62.9 MB. Free memory was 33.1 MB in the beginning and 31.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:50,484 INFO L168 Benchmark]: Boogie Preprocessor took 38.25 ms. Allocated memory is still 62.9 MB. Free memory was 31.7 MB in the beginning and 30.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:08:50,485 INFO L168 Benchmark]: RCFGBuilder took 273.31 ms. Allocated memory is still 62.9 MB. Free memory was 30.5 MB in the beginning and 38.9 MB in the end (delta: -8.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:50,485 INFO L168 Benchmark]: TraceAbstraction took 9392.69 ms. Allocated memory was 62.9 MB in the beginning and 119.5 MB in the end (delta: 56.6 MB). Free memory was 38.5 MB in the beginning and 52.6 MB in the end (delta: -14.1 MB). Peak memory consumption was 41.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:50,485 INFO L168 Benchmark]: Witness Printer took 41.39 ms. Allocated memory is still 119.5 MB. Free memory was 52.6 MB in the beginning and 49.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:08:50,487 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 62.9 MB. Free memory is still 44.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.09 ms. Allocated memory is still 62.9 MB. Free memory was 43.0 MB in the beginning and 33.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.27 ms. Allocated memory is still 62.9 MB. Free memory was 33.1 MB in the beginning and 31.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.25 ms. Allocated memory is still 62.9 MB. Free memory was 31.7 MB in the beginning and 30.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 273.31 ms. Allocated memory is still 62.9 MB. Free memory was 30.5 MB in the beginning and 38.9 MB in the end (delta: -8.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9392.69 ms. Allocated memory was 62.9 MB in the beginning and 119.5 MB in the end (delta: 56.6 MB). Free memory was 38.5 MB in the beginning and 52.6 MB in the end (delta: -14.1 MB). Peak memory consumption was 41.5 MB. Max. memory is 16.1 GB. * Witness Printer took 41.39 ms. Allocated memory is still 119.5 MB. Free memory was 52.6 MB in the beginning and 49.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 8]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9309.6ms, OverallIterations: 8, TraceHistogramMax: 10, EmptinessCheckTime: 14.0ms, AutomataDifference: 1710.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 844.9ms, InitialAbstractionConstructionTime: 8.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 77 SDtfs, 149 SDslu, 286 SDs, 0 SdLazy, 677 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 595.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 310 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 2674.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=7, InterpolantAutomatonStates: 84, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 57.7ms AutomataMinimizationTime, 8 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 16 NumberOfFragments, 289 HoareAnnotationTreeSize, 3 FomulaSimplifications, 127 FormulaSimplificationTreeSizeReduction, 103.8ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 630 FormulaSimplificationTreeSizeReductionInter, 735.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 87.4ms SsaConstructionTime, 161.6ms SatisfiabilityAnalysisTime, 4149.4ms InterpolantComputationTime, 150 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 284 ConstructedInterpolants, 39 QuantifiedInterpolants, 3243 SizeOfPredicates, 24 NumberOfNonLiveVariables, 361 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 472/698 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant [2021-10-21 20:08:50,496 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,496 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,496 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,496 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2021-10-21 20:08:50,497 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2021-10-21 20:08:50,497 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,497 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,497 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,499 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,499 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,499 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,500 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2021-10-21 20:08:50,500 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2021-10-21 20:08:50,500 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,500 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-21 20:08:50,501 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] Derived loop invariant: ((((((((((y == 5bv8 && x == 37bv8) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && (\exists v_ULTIMATE.start_main_~c~0_50 : bv8 :: (c == ~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0] && ~bvslt32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32))) && bit == 4bv8) || ((y == 0bv8 && x == 37bv8) && c == 0bv8)) || (((1bv8 == bit && x == 37bv8) && 1bv8 == c) && 1bv8 == y)) || (((0bv32 == ~zero_extendFrom8To32(bit) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]))[7:0]))[7:0]), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(1bv32, ~zero_extendFrom8To32(~bvadd64(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]))[7:0]))[7:0])) && y == 37bv8) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]), ~zero_extendFrom8To32(y))[7:0]))) || ((y == 5bv8 && x == 37bv8) && 4bv8 == c)) || ((((\exists v_ULTIMATE.start_main_~c~0_28 : bv8 :: !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28))[7:0]))[7:0]) == 0bv32) && c == ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28), 1bv32)[7:0]) && (\exists v_ULTIMATE.start_main_~c~0_50 : bv8 :: (c == ~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0] && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 8bv32))) && y == 37bv8) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]), ~zero_extendFrom8To32(y))[7:0]))) || ((y == 5bv8 && c == 5bv8) && x == 37bv8)) || ((x == 37bv8 && 2bv8 == c) && 1bv8 == y) - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-21 20:08:50,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655ab60b-df67-47d8-909c-5bdfca6dede0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...