./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9a431cc3dce37048e7415db5e7aefee11ebb182 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:21:43,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:21:43,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:21:43,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:21:43,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:21:43,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:21:43,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:21:43,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:21:43,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:21:43,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:21:43,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:21:43,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:21:43,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:21:43,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:21:43,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:21:43,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:21:43,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:21:43,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:21:43,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:21:43,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:21:43,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:21:43,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:21:43,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:21:43,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:21:43,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:21:43,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:21:43,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:21:43,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:21:43,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:21:43,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:21:43,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:21:43,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:21:43,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:21:43,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:21:43,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:21:43,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:21:43,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:21:43,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:21:43,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:21:43,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:21:43,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:21:43,996 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:21:44,034 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:21:44,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:21:44,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:21:44,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:21:44,037 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:21:44,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:21:44,037 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:21:44,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:21:44,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:21:44,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:21:44,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:21:44,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:21:44,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:21:44,046 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:21:44,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:21:44,046 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:21:44,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:21:44,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:21:44,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:21:44,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:21:44,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:21:44,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:21:44,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:21:44,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:21:44,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:21:44,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:21:44,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:21:44,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:21:44,049 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_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9a431cc3dce37048e7415db5e7aefee11ebb182 [2021-10-11 00:21:44,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:21:44,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:21:44,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:21:44,339 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:21:44,343 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:21:44,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2021-10-11 00:21:44,440 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/data/504effec6/4748171e619d4029bf87aa450392c3ef/FLAG05c55be8e [2021-10-11 00:21:44,870 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:21:44,870 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2021-10-11 00:21:44,877 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/data/504effec6/4748171e619d4029bf87aa450392c3ef/FLAG05c55be8e [2021-10-11 00:21:45,264 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/data/504effec6/4748171e619d4029bf87aa450392c3ef [2021-10-11 00:21:45,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:21:45,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:21:45,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:21:45,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:21:45,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:21:45,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:21:45" (1/1) ... [2021-10-11 00:21:45,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@609bfd5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:45, skipping insertion in model container [2021-10-11 00:21:45,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:21:45" (1/1) ... [2021-10-11 00:21:45,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:21:45,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:21:45,457 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2021-10-11 00:21:45,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:21:45,504 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:21:45,521 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2021-10-11 00:21:45,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:21:45,546 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:21:45,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:45 WrapperNode [2021-10-11 00:21:45,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:21:45,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:21:45,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:21:45,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:21:45,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:45" (1/1) ... [2021-10-11 00:21:45,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:45" (1/1) ... [2021-10-11 00:21:45,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:21:45,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:21:45,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:21:45,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:21:45,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:45" (1/1) ... [2021-10-11 00:21:45,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:45" (1/1) ... [2021-10-11 00:21:45,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:45" (1/1) ... [2021-10-11 00:21:45,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:45" (1/1) ... [2021-10-11 00:21:45,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:45" (1/1) ... [2021-10-11 00:21:45,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:45" (1/1) ... [2021-10-11 00:21:45,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:45" (1/1) ... [2021-10-11 00:21:45,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:21:45,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:21:45,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:21:45,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:21:45,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:45" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:21:45,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:21:45,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:21:45,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:21:45,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:21:45,956 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:21:45,956 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2021-10-11 00:21:45,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:21:45 BoogieIcfgContainer [2021-10-11 00:21:45,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:21:45,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:21:45,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:21:45,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:21:45,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:21:45" (1/3) ... [2021-10-11 00:21:45,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b1ee3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:21:45, skipping insertion in model container [2021-10-11 00:21:45,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:21:45" (2/3) ... [2021-10-11 00:21:45,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b1ee3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:21:45, skipping insertion in model container [2021-10-11 00:21:45,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:21:45" (3/3) ... [2021-10-11 00:21:45,967 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2021-10-11 00:21:45,980 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:21:45,983 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2021-10-11 00:21:45,993 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-11 00:21:46,032 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:21:46,040 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:21:46,040 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:21:46,040 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:21:46,040 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:21:46,040 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:21:46,041 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:21:46,041 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:21:46,054 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2021-10-11 00:21:46,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:21:46,066 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:46,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:46,067 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:46,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:46,073 INFO L82 PathProgramCache]: Analyzing trace with hash -174497841, now seen corresponding path program 1 times [2021-10-11 00:21:46,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:46,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979713639] [2021-10-11 00:21:46,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:46,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:46,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979713639] [2021-10-11 00:21:46,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:21:46,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:21:46,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114586558] [2021-10-11 00:21:46,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:21:46,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:46,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:21:46,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:21:46,251 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2021-10-11 00:21:46,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:46,270 INFO L93 Difference]: Finished difference Result 79 states and 112 transitions. [2021-10-11 00:21:46,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:21:46,272 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2021-10-11 00:21:46,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:46,279 INFO L225 Difference]: With dead ends: 79 [2021-10-11 00:21:46,280 INFO L226 Difference]: Without dead ends: 37 [2021-10-11 00:21:46,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:21:46,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-11 00:21:46,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-11 00:21:46,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-10-11 00:21:46,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-10-11 00:21:46,314 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 14 [2021-10-11 00:21:46,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:46,315 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-10-11 00:21:46,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:21:46,315 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-10-11 00:21:46,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 00:21:46,316 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:46,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:46,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:21:46,317 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:46,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:46,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1454170515, now seen corresponding path program 1 times [2021-10-11 00:21:46,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:46,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706930958] [2021-10-11 00:21:46,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:46,343 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:46,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712687328] [2021-10-11 00:21:46,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:46,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 00:21:46,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:46,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706930958] [2021-10-11 00:21:46,580 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:46,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712687328] [2021-10-11 00:21:46,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:21:46,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:21:46,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406435377] [2021-10-11 00:21:46,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:21:46,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:46,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:21:46,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:21:46,586 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2021-10-11 00:21:46,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:46,745 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2021-10-11 00:21:46,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:21:46,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-10-11 00:21:46,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:46,749 INFO L225 Difference]: With dead ends: 64 [2021-10-11 00:21:46,750 INFO L226 Difference]: Without dead ends: 60 [2021-10-11 00:21:46,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:21:46,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-11 00:21:46,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2021-10-11 00:21:46,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-10-11 00:21:46,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-11 00:21:46,773 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 15 [2021-10-11 00:21:46,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:46,773 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-11 00:21:46,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:21:46,774 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-11 00:21:46,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:21:46,775 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:46,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:47,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 00:21:47,003 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:47,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:47,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1580206288, now seen corresponding path program 1 times [2021-10-11 00:21:47,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:47,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418818871] [2021-10-11 00:21:47,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:47,031 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:47,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [218102062] [2021-10-11 00:21:47,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:47,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-11 00:21:47,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:47,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:47,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418818871] [2021-10-11 00:21:47,395 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:47,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218102062] [2021-10-11 00:21:47,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:21:47,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-11 00:21:47,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562039548] [2021-10-11 00:21:47,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 00:21:47,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:47,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 00:21:47,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:21:47,398 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 12 states. [2021-10-11 00:21:47,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:47,764 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2021-10-11 00:21:47,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 00:21:47,765 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2021-10-11 00:21:47,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:47,766 INFO L225 Difference]: With dead ends: 60 [2021-10-11 00:21:47,766 INFO L226 Difference]: Without dead ends: 58 [2021-10-11 00:21:47,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-10-11 00:21:47,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-11 00:21:47,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2021-10-11 00:21:47,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 00:21:47,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2021-10-11 00:21:47,775 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 17 [2021-10-11 00:21:47,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:47,775 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2021-10-11 00:21:47,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 00:21:47,776 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2021-10-11 00:21:47,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 00:21:47,776 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:47,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:48,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:48,003 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:48,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:48,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1840022701, now seen corresponding path program 1 times [2021-10-11 00:21:48,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:48,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91097911] [2021-10-11 00:21:48,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:48,021 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:48,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467634364] [2021-10-11 00:21:48,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:48,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-11 00:21:48,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:48,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:48,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91097911] [2021-10-11 00:21:48,359 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:48,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467634364] [2021-10-11 00:21:48,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:21:48,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-11 00:21:48,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698470569] [2021-10-11 00:21:48,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 00:21:48,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:48,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 00:21:48,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:21:48,361 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 12 states. [2021-10-11 00:21:48,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:48,748 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2021-10-11 00:21:48,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 00:21:48,749 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2021-10-11 00:21:48,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:48,750 INFO L225 Difference]: With dead ends: 58 [2021-10-11 00:21:48,750 INFO L226 Difference]: Without dead ends: 56 [2021-10-11 00:21:48,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-10-11 00:21:48,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-11 00:21:48,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2021-10-11 00:21:48,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 00:21:48,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-10-11 00:21:48,764 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 19 [2021-10-11 00:21:48,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:48,765 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-10-11 00:21:48,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 00:21:48,765 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-10-11 00:21:48,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 00:21:48,766 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:48,766 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:48,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:48,983 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:48,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:48,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1412177226, now seen corresponding path program 1 times [2021-10-11 00:21:48,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:48,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23155638] [2021-10-11 00:21:48,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:49,001 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:49,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005732161] [2021-10-11 00:21:49,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:49,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 00:21:49,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:49,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:49,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23155638] [2021-10-11 00:21:49,121 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:49,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005732161] [2021-10-11 00:21:49,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:21:49,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-11 00:21:49,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15676970] [2021-10-11 00:21:49,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:21:49,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:49,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:21:49,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:21:49,125 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 7 states. [2021-10-11 00:21:49,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:49,310 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2021-10-11 00:21:49,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 00:21:49,314 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2021-10-11 00:21:49,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:49,316 INFO L225 Difference]: With dead ends: 140 [2021-10-11 00:21:49,316 INFO L226 Difference]: Without dead ends: 136 [2021-10-11 00:21:49,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:21:49,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-11 00:21:49,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 75. [2021-10-11 00:21:49,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-10-11 00:21:49,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2021-10-11 00:21:49,328 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 20 [2021-10-11 00:21:49,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:49,328 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2021-10-11 00:21:49,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:21:49,329 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2021-10-11 00:21:49,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 00:21:49,329 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:49,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:49,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:49,555 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:49,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:49,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1264867958, now seen corresponding path program 1 times [2021-10-11 00:21:49,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:49,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404802975] [2021-10-11 00:21:49,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:49,570 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:49,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480937872] [2021-10-11 00:21:49,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:49,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-11 00:21:49,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:49,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404802975] [2021-10-11 00:21:49,726 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:49,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480937872] [2021-10-11 00:21:49,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:21:49,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-11 00:21:49,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427250590] [2021-10-11 00:21:49,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 00:21:49,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:49,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:21:49,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:21:49,728 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand 8 states. [2021-10-11 00:21:49,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:49,949 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2021-10-11 00:21:49,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:21:49,950 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2021-10-11 00:21:49,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:49,953 INFO L225 Difference]: With dead ends: 95 [2021-10-11 00:21:49,953 INFO L226 Difference]: Without dead ends: 93 [2021-10-11 00:21:49,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:21:49,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-11 00:21:49,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2021-10-11 00:21:49,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-10-11 00:21:49,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2021-10-11 00:21:49,974 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 21 [2021-10-11 00:21:49,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:49,975 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2021-10-11 00:21:49,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 00:21:49,975 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2021-10-11 00:21:49,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 00:21:49,976 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:49,976 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:50,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-11 00:21:50,191 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:50,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:50,191 INFO L82 PathProgramCache]: Analyzing trace with hash 94063923, now seen corresponding path program 1 times [2021-10-11 00:21:50,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:50,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351017612] [2021-10-11 00:21:50,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:50,205 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:50,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [794202328] [2021-10-11 00:21:50,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:50,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-11 00:21:50,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:50,547 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:21:50,550 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:21:50,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:50,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351017612] [2021-10-11 00:21:50,573 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:50,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794202328] [2021-10-11 00:21:50,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:21:50,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-11 00:21:50,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343362062] [2021-10-11 00:21:50,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-10-11 00:21:50,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:50,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-11 00:21:50,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-11 00:21:50,575 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand 13 states. [2021-10-11 00:21:50,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:50,990 INFO L93 Difference]: Finished difference Result 119 states and 137 transitions. [2021-10-11 00:21:50,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 00:21:50,990 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2021-10-11 00:21:50,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:50,991 INFO L225 Difference]: With dead ends: 119 [2021-10-11 00:21:50,991 INFO L226 Difference]: Without dead ends: 117 [2021-10-11 00:21:50,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-11 00:21:50,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-11 00:21:51,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 101. [2021-10-11 00:21:51,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-10-11 00:21:51,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2021-10-11 00:21:51,007 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 22 [2021-10-11 00:21:51,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:51,007 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2021-10-11 00:21:51,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-10-11 00:21:51,007 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2021-10-11 00:21:51,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 00:21:51,008 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:51,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:51,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:51,222 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:51,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:51,222 INFO L82 PathProgramCache]: Analyzing trace with hash 62520889, now seen corresponding path program 1 times [2021-10-11 00:21:51,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:51,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400632190] [2021-10-11 00:21:51,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:51,236 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:51,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704263703] [2021-10-11 00:21:51,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:51,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-11 00:21:51,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:51,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:51,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400632190] [2021-10-11 00:21:51,336 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:51,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704263703] [2021-10-11 00:21:51,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:21:51,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:21:51,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218120233] [2021-10-11 00:21:51,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:21:51,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:51,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:21:51,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:21:51,338 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand 5 states. [2021-10-11 00:21:51,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:51,463 INFO L93 Difference]: Finished difference Result 192 states and 240 transitions. [2021-10-11 00:21:51,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:21:51,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2021-10-11 00:21:51,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:51,467 INFO L225 Difference]: With dead ends: 192 [2021-10-11 00:21:51,467 INFO L226 Difference]: Without dead ends: 190 [2021-10-11 00:21:51,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:21:51,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-10-11 00:21:51,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 141. [2021-10-11 00:21:51,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-10-11 00:21:51,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 174 transitions. [2021-10-11 00:21:51,491 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 174 transitions. Word has length 23 [2021-10-11 00:21:51,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:51,491 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 174 transitions. [2021-10-11 00:21:51,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:21:51,492 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 174 transitions. [2021-10-11 00:21:51,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 00:21:51,493 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:51,493 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:51,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:51,707 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:51,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:51,707 INFO L82 PathProgramCache]: Analyzing trace with hash 201274102, now seen corresponding path program 1 times [2021-10-11 00:21:51,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:51,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824187357] [2021-10-11 00:21:51,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:51,721 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:51,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070493242] [2021-10-11 00:21:51,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:51,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-11 00:21:51,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:52,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:52,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824187357] [2021-10-11 00:21:52,141 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:52,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070493242] [2021-10-11 00:21:52,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:21:52,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-11 00:21:52,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419149762] [2021-10-11 00:21:52,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-10-11 00:21:52,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:52,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-11 00:21:52,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-11 00:21:52,144 INFO L87 Difference]: Start difference. First operand 141 states and 174 transitions. Second operand 15 states. [2021-10-11 00:21:53,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:53,123 INFO L93 Difference]: Finished difference Result 157 states and 184 transitions. [2021-10-11 00:21:53,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-11 00:21:53,123 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2021-10-11 00:21:53,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:53,125 INFO L225 Difference]: With dead ends: 157 [2021-10-11 00:21:53,125 INFO L226 Difference]: Without dead ends: 155 [2021-10-11 00:21:53,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=209, Invalid=441, Unknown=0, NotChecked=0, Total=650 [2021-10-11 00:21:53,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-11 00:21:53,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 141. [2021-10-11 00:21:53,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-10-11 00:21:53,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 172 transitions. [2021-10-11 00:21:53,143 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 172 transitions. Word has length 24 [2021-10-11 00:21:53,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:53,143 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 172 transitions. [2021-10-11 00:21:53,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-10-11 00:21:53,144 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 172 transitions. [2021-10-11 00:21:53,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-11 00:21:53,145 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:53,145 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:53,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-11 00:21:53,359 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:53,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:53,359 INFO L82 PathProgramCache]: Analyzing trace with hash 151041369, now seen corresponding path program 1 times [2021-10-11 00:21:53,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:53,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657324249] [2021-10-11 00:21:53,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:53,371 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:53,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785251374] [2021-10-11 00:21:53,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:53,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-11 00:21:53,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:53,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657324249] [2021-10-11 00:21:53,530 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:53,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785251374] [2021-10-11 00:21:53,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:21:53,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-11 00:21:53,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016572399] [2021-10-11 00:21:53,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 00:21:53,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:53,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 00:21:53,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:21:53,533 INFO L87 Difference]: Start difference. First operand 141 states and 172 transitions. Second operand 11 states. [2021-10-11 00:21:53,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:53,885 INFO L93 Difference]: Finished difference Result 254 states and 297 transitions. [2021-10-11 00:21:53,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 00:21:53,886 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2021-10-11 00:21:53,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:53,887 INFO L225 Difference]: With dead ends: 254 [2021-10-11 00:21:53,888 INFO L226 Difference]: Without dead ends: 252 [2021-10-11 00:21:53,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-11 00:21:53,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-11 00:21:53,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 175. [2021-10-11 00:21:53,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2021-10-11 00:21:53,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 214 transitions. [2021-10-11 00:21:53,909 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 214 transitions. Word has length 26 [2021-10-11 00:21:53,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:53,910 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 214 transitions. [2021-10-11 00:21:53,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 00:21:53,910 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 214 transitions. [2021-10-11 00:21:53,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-11 00:21:53,914 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:53,915 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:54,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:54,139 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:54,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:54,139 INFO L82 PathProgramCache]: Analyzing trace with hash -74821968, now seen corresponding path program 2 times [2021-10-11 00:21:54,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:54,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497929671] [2021-10-11 00:21:54,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:54,151 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:54,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [323680393] [2021-10-11 00:21:54,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:54,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:21:54,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:21:54,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:21:54,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:54,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497929671] [2021-10-11 00:21:54,273 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:54,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323680393] [2021-10-11 00:21:54,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:21:54,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:21:54,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348711249] [2021-10-11 00:21:54,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:21:54,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:54,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:21:54,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:21:54,275 INFO L87 Difference]: Start difference. First operand 175 states and 214 transitions. Second operand 5 states. [2021-10-11 00:21:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:54,374 INFO L93 Difference]: Finished difference Result 249 states and 298 transitions. [2021-10-11 00:21:54,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:21:54,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2021-10-11 00:21:54,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:54,379 INFO L225 Difference]: With dead ends: 249 [2021-10-11 00:21:54,379 INFO L226 Difference]: Without dead ends: 167 [2021-10-11 00:21:54,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:21:54,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-10-11 00:21:54,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 93. [2021-10-11 00:21:54,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-10-11 00:21:54,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2021-10-11 00:21:54,395 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 27 [2021-10-11 00:21:54,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:54,397 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2021-10-11 00:21:54,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:21:54,398 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2021-10-11 00:21:54,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-11 00:21:54,407 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:54,407 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:54,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:54,624 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:54,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:54,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1112899551, now seen corresponding path program 1 times [2021-10-11 00:21:54,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:54,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383089982] [2021-10-11 00:21:54,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:54,635 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:54,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922567586] [2021-10-11 00:21:54,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:54,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-11 00:21:54,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:54,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:54,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383089982] [2021-10-11 00:21:54,996 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:55,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922567586] [2021-10-11 00:21:55,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:21:55,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-11 00:21:55,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054505445] [2021-10-11 00:21:55,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 00:21:55,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:55,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 00:21:55,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:21:55,007 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand 12 states. [2021-10-11 00:21:55,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:55,665 INFO L93 Difference]: Finished difference Result 233 states and 270 transitions. [2021-10-11 00:21:55,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-11 00:21:55,665 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2021-10-11 00:21:55,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:55,667 INFO L225 Difference]: With dead ends: 233 [2021-10-11 00:21:55,667 INFO L226 Difference]: Without dead ends: 174 [2021-10-11 00:21:55,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2021-10-11 00:21:55,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-11 00:21:55,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 110. [2021-10-11 00:21:55,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2021-10-11 00:21:55,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2021-10-11 00:21:55,688 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 32 [2021-10-11 00:21:55,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:55,689 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2021-10-11 00:21:55,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 00:21:55,689 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2021-10-11 00:21:55,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-11 00:21:55,691 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:55,692 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:55,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-11 00:21:55,907 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:55,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:55,907 INFO L82 PathProgramCache]: Analyzing trace with hash -986732336, now seen corresponding path program 1 times [2021-10-11 00:21:55,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:55,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005938933] [2021-10-11 00:21:55,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:55,917 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:55,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153373996] [2021-10-11 00:21:55,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:55,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-11 00:21:55,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:56,164 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:21:56,166 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:21:56,169 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:21:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:56,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005938933] [2021-10-11 00:21:56,187 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:56,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153373996] [2021-10-11 00:21:56,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:21:56,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-11 00:21:56,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798800952] [2021-10-11 00:21:56,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 00:21:56,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:56,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 00:21:56,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:21:56,190 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand 11 states. [2021-10-11 00:21:56,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:56,820 INFO L93 Difference]: Finished difference Result 222 states and 256 transitions. [2021-10-11 00:21:56,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 00:21:56,821 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2021-10-11 00:21:56,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:56,822 INFO L225 Difference]: With dead ends: 222 [2021-10-11 00:21:56,823 INFO L226 Difference]: Without dead ends: 156 [2021-10-11 00:21:56,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2021-10-11 00:21:56,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-11 00:21:56,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 137. [2021-10-11 00:21:56,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2021-10-11 00:21:56,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 155 transitions. [2021-10-11 00:21:56,853 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 155 transitions. Word has length 32 [2021-10-11 00:21:56,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:56,853 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 155 transitions. [2021-10-11 00:21:56,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 00:21:56,854 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 155 transitions. [2021-10-11 00:21:56,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-11 00:21:56,854 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:56,854 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:57,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-11 00:21:57,079 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:57,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:57,079 INFO L82 PathProgramCache]: Analyzing trace with hash -315127458, now seen corresponding path program 2 times [2021-10-11 00:21:57,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:57,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697338111] [2021-10-11 00:21:57,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:57,088 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:57,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012822407] [2021-10-11 00:21:57,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:57,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:21:57,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:21:57,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 00:21:57,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:57,226 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:57,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697338111] [2021-10-11 00:21:57,227 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:57,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012822407] [2021-10-11 00:21:57,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:21:57,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-11 00:21:57,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551939004] [2021-10-11 00:21:57,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 00:21:57,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:57,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:21:57,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:21:57,229 INFO L87 Difference]: Start difference. First operand 137 states and 155 transitions. Second operand 8 states. [2021-10-11 00:21:57,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:57,601 INFO L93 Difference]: Finished difference Result 317 states and 360 transitions. [2021-10-11 00:21:57,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-11 00:21:57,602 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2021-10-11 00:21:57,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:57,604 INFO L225 Difference]: With dead ends: 317 [2021-10-11 00:21:57,604 INFO L226 Difference]: Without dead ends: 313 [2021-10-11 00:21:57,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-11 00:21:57,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-10-11 00:21:57,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 165. [2021-10-11 00:21:57,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2021-10-11 00:21:57,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 192 transitions. [2021-10-11 00:21:57,637 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 192 transitions. Word has length 37 [2021-10-11 00:21:57,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:57,637 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 192 transitions. [2021-10-11 00:21:57,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 00:21:57,637 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 192 transitions. [2021-10-11 00:21:57,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-11 00:21:57,638 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:57,639 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:57,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-11 00:21:57,863 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:57,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:57,863 INFO L82 PathProgramCache]: Analyzing trace with hash -188960243, now seen corresponding path program 1 times [2021-10-11 00:21:57,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:57,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758764277] [2021-10-11 00:21:57,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:57,871 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:57,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1615308609] [2021-10-11 00:21:57,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:57,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-11 00:21:57,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:58,160 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:21:58,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758764277] [2021-10-11 00:21:58,161 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:58,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615308609] [2021-10-11 00:21:58,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:21:58,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-11 00:21:58,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667422941] [2021-10-11 00:21:58,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-10-11 00:21:58,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:58,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-11 00:21:58,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-11 00:21:58,163 INFO L87 Difference]: Start difference. First operand 165 states and 192 transitions. Second operand 15 states. [2021-10-11 00:21:59,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:59,037 INFO L93 Difference]: Finished difference Result 245 states and 281 transitions. [2021-10-11 00:21:59,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-11 00:21:59,038 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 37 [2021-10-11 00:21:59,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:59,039 INFO L225 Difference]: With dead ends: 245 [2021-10-11 00:21:59,039 INFO L226 Difference]: Without dead ends: 243 [2021-10-11 00:21:59,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=847, Unknown=0, NotChecked=0, Total=1056 [2021-10-11 00:21:59,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-10-11 00:21:59,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 205. [2021-10-11 00:21:59,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2021-10-11 00:21:59,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 240 transitions. [2021-10-11 00:21:59,081 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 240 transitions. Word has length 37 [2021-10-11 00:21:59,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:59,081 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 240 transitions. [2021-10-11 00:21:59,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-10-11 00:21:59,082 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 240 transitions. [2021-10-11 00:21:59,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-11 00:21:59,082 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:59,083 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:59,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:59,311 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:59,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:59,311 INFO L82 PathProgramCache]: Analyzing trace with hash 913672398, now seen corresponding path program 1 times [2021-10-11 00:21:59,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:59,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586415844] [2021-10-11 00:21:59,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:59,317 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:59,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1463470796] [2021-10-11 00:21:59,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:21:59,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:21:59,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 00:21:59,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586415844] [2021-10-11 00:21:59,447 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:59,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463470796] [2021-10-11 00:21:59,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:21:59,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:21:59,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313035043] [2021-10-11 00:21:59,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:21:59,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:59,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:21:59,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:21:59,449 INFO L87 Difference]: Start difference. First operand 205 states and 240 transitions. Second operand 5 states. [2021-10-11 00:21:59,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:21:59,547 INFO L93 Difference]: Finished difference Result 348 states and 412 transitions. [2021-10-11 00:21:59,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:21:59,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-10-11 00:21:59,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:21:59,549 INFO L225 Difference]: With dead ends: 348 [2021-10-11 00:21:59,549 INFO L226 Difference]: Without dead ends: 226 [2021-10-11 00:21:59,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:21:59,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-11 00:21:59,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 204. [2021-10-11 00:21:59,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2021-10-11 00:21:59,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 238 transitions. [2021-10-11 00:21:59,585 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 238 transitions. Word has length 38 [2021-10-11 00:21:59,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:21:59,586 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 238 transitions. [2021-10-11 00:21:59,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:21:59,586 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 238 transitions. [2021-10-11 00:21:59,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-11 00:21:59,587 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:21:59,587 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:21:59,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-11 00:21:59,792 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:21:59,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:21:59,792 INFO L82 PathProgramCache]: Analyzing trace with hash 820532868, now seen corresponding path program 2 times [2021-10-11 00:21:59,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:21:59,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899421322] [2021-10-11 00:21:59,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:21:59,800 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:21:59,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013122090] [2021-10-11 00:21:59,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:21:59,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-11 00:21:59,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:21:59,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-11 00:21:59,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:21:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 00:21:59,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899421322] [2021-10-11 00:21:59,905 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:21:59,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013122090] [2021-10-11 00:21:59,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:21:59,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:21:59,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431187621] [2021-10-11 00:21:59,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:21:59,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:21:59,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:21:59,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:21:59,910 INFO L87 Difference]: Start difference. First operand 204 states and 238 transitions. Second operand 5 states. [2021-10-11 00:22:00,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:00,034 INFO L93 Difference]: Finished difference Result 237 states and 275 transitions. [2021-10-11 00:22:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:22:00,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-10-11 00:22:00,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:00,038 INFO L225 Difference]: With dead ends: 237 [2021-10-11 00:22:00,038 INFO L226 Difference]: Without dead ends: 235 [2021-10-11 00:22:00,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:22:00,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-10-11 00:22:00,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 222. [2021-10-11 00:22:00,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2021-10-11 00:22:00,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 260 transitions. [2021-10-11 00:22:00,085 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 260 transitions. Word has length 38 [2021-10-11 00:22:00,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:00,085 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 260 transitions. [2021-10-11 00:22:00,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:22:00,085 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 260 transitions. [2021-10-11 00:22:00,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-11 00:22:00,086 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:00,086 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:00,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-11 00:22:00,287 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:00,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:00,287 INFO L82 PathProgramCache]: Analyzing trace with hash 2091903451, now seen corresponding path program 1 times [2021-10-11 00:22:00,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:00,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214415362] [2021-10-11 00:22:00,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:00,295 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:22:00,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1683171699] [2021-10-11 00:22:00,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:22:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:00,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 00:22:00,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:22:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 00:22:00,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214415362] [2021-10-11 00:22:00,430 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:22:00,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683171699] [2021-10-11 00:22:00,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:22:00,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 00:22:00,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204179756] [2021-10-11 00:22:00,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 00:22:00,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:00,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 00:22:00,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:22:00,432 INFO L87 Difference]: Start difference. First operand 222 states and 260 transitions. Second operand 9 states. [2021-10-11 00:22:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:00,683 INFO L93 Difference]: Finished difference Result 300 states and 345 transitions. [2021-10-11 00:22:00,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 00:22:00,683 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2021-10-11 00:22:00,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:00,685 INFO L225 Difference]: With dead ends: 300 [2021-10-11 00:22:00,685 INFO L226 Difference]: Without dead ends: 235 [2021-10-11 00:22:00,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-11 00:22:00,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-10-11 00:22:00,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 216. [2021-10-11 00:22:00,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-10-11 00:22:00,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 251 transitions. [2021-10-11 00:22:00,725 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 251 transitions. Word has length 39 [2021-10-11 00:22:00,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:00,726 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 251 transitions. [2021-10-11 00:22:00,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 00:22:00,726 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 251 transitions. [2021-10-11 00:22:00,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-11 00:22:00,727 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:00,727 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:00,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-11 00:22:00,937 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:00,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:00,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1404711062, now seen corresponding path program 1 times [2021-10-11 00:22:00,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:00,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906625887] [2021-10-11 00:22:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:00,945 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:22:00,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465586726] [2021-10-11 00:22:00,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:22:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:00,991 WARN L261 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 90 conjunts are in the unsatisfiable core [2021-10-11 00:22:00,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:22:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:01,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906625887] [2021-10-11 00:22:01,621 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:22:01,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465586726] [2021-10-11 00:22:01,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:22:01,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-10-11 00:22:01,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593702040] [2021-10-11 00:22:01,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-10-11 00:22:01,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:01,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-11 00:22:01,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-10-11 00:22:01,623 INFO L87 Difference]: Start difference. First operand 216 states and 251 transitions. Second operand 18 states. [2021-10-11 00:22:02,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:02,286 INFO L93 Difference]: Finished difference Result 312 states and 363 transitions. [2021-10-11 00:22:02,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-11 00:22:02,287 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 41 [2021-10-11 00:22:02,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:02,288 INFO L225 Difference]: With dead ends: 312 [2021-10-11 00:22:02,288 INFO L226 Difference]: Without dead ends: 248 [2021-10-11 00:22:02,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2021-10-11 00:22:02,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-10-11 00:22:02,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 237. [2021-10-11 00:22:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2021-10-11 00:22:02,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 273 transitions. [2021-10-11 00:22:02,327 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 273 transitions. Word has length 41 [2021-10-11 00:22:02,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:02,327 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 273 transitions. [2021-10-11 00:22:02,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-10-11 00:22:02,328 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 273 transitions. [2021-10-11 00:22:02,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-11 00:22:02,328 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:02,328 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:02,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:22:02,539 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:02,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:02,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1976752845, now seen corresponding path program 2 times [2021-10-11 00:22:02,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:02,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063498166] [2021-10-11 00:22:02,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:02,547 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:22:02,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267006787] [2021-10-11 00:22:02,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:22:02,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:22:02,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:22:02,610 WARN L261 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 103 conjunts are in the unsatisfiable core [2021-10-11 00:22:02,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:22:03,321 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 00:22:03,325 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 00:22:03,368 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:03,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063498166] [2021-10-11 00:22:03,368 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:22:03,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267006787] [2021-10-11 00:22:03,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:22:03,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-10-11 00:22:03,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268914077] [2021-10-11 00:22:03,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-10-11 00:22:03,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:03,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-11 00:22:03,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2021-10-11 00:22:03,370 INFO L87 Difference]: Start difference. First operand 237 states and 273 transitions. Second operand 21 states. [2021-10-11 00:22:04,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:04,643 INFO L93 Difference]: Finished difference Result 351 states and 401 transitions. [2021-10-11 00:22:04,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-11 00:22:04,644 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 46 [2021-10-11 00:22:04,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:04,646 INFO L225 Difference]: With dead ends: 351 [2021-10-11 00:22:04,646 INFO L226 Difference]: Without dead ends: 341 [2021-10-11 00:22:04,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2021-10-11 00:22:04,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-10-11 00:22:04,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 258. [2021-10-11 00:22:04,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2021-10-11 00:22:04,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 297 transitions. [2021-10-11 00:22:04,710 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 297 transitions. Word has length 46 [2021-10-11 00:22:04,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:04,710 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 297 transitions. [2021-10-11 00:22:04,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-10-11 00:22:04,711 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 297 transitions. [2021-10-11 00:22:04,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-11 00:22:04,711 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:04,712 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:04,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:22:04,926 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:04,927 INFO L82 PathProgramCache]: Analyzing trace with hash 2102920060, now seen corresponding path program 2 times [2021-10-11 00:22:04,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:04,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806928882] [2021-10-11 00:22:04,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:04,936 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:22:04,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [865864580] [2021-10-11 00:22:04,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:22:04,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:22:04,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:22:04,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-11 00:22:04,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:22:05,148 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:22:05,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806928882] [2021-10-11 00:22:05,149 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:22:05,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865864580] [2021-10-11 00:22:05,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:22:05,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-11 00:22:05,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441284573] [2021-10-11 00:22:05,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 00:22:05,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:05,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 00:22:05,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:22:05,153 INFO L87 Difference]: Start difference. First operand 258 states and 297 transitions. Second operand 12 states. [2021-10-11 00:22:05,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:05,668 INFO L93 Difference]: Finished difference Result 465 states and 537 transitions. [2021-10-11 00:22:05,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-11 00:22:05,669 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2021-10-11 00:22:05,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:05,670 INFO L225 Difference]: With dead ends: 465 [2021-10-11 00:22:05,670 INFO L226 Difference]: Without dead ends: 368 [2021-10-11 00:22:05,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2021-10-11 00:22:05,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-10-11 00:22:05,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 203. [2021-10-11 00:22:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2021-10-11 00:22:05,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 231 transitions. [2021-10-11 00:22:05,721 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 231 transitions. Word has length 46 [2021-10-11 00:22:05,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:05,722 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 231 transitions. [2021-10-11 00:22:05,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 00:22:05,722 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 231 transitions. [2021-10-11 00:22:05,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-11 00:22:05,723 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:05,723 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:05,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-11 00:22:05,943 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:05,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:05,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1437779966, now seen corresponding path program 1 times [2021-10-11 00:22:05,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:05,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096846025] [2021-10-11 00:22:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:05,952 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:22:05,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85628275] [2021-10-11 00:22:05,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:22:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:22:06,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-11 00:22:06,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:22:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 00:22:06,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096846025] [2021-10-11 00:22:06,129 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:22:06,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85628275] [2021-10-11 00:22:06,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:22:06,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-11 00:22:06,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921782672] [2021-10-11 00:22:06,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 00:22:06,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:06,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 00:22:06,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:22:06,130 INFO L87 Difference]: Start difference. First operand 203 states and 231 transitions. Second operand 10 states. [2021-10-11 00:22:06,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:06,382 INFO L93 Difference]: Finished difference Result 345 states and 398 transitions. [2021-10-11 00:22:06,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 00:22:06,384 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2021-10-11 00:22:06,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:06,385 INFO L225 Difference]: With dead ends: 345 [2021-10-11 00:22:06,386 INFO L226 Difference]: Without dead ends: 179 [2021-10-11 00:22:06,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-10-11 00:22:06,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-10-11 00:22:06,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-10-11 00:22:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2021-10-11 00:22:06,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 205 transitions. [2021-10-11 00:22:06,429 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 205 transitions. Word has length 49 [2021-10-11 00:22:06,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:06,429 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 205 transitions. [2021-10-11 00:22:06,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 00:22:06,429 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 205 transitions. [2021-10-11 00:22:06,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-11 00:22:06,430 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:06,430 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:06,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-11 00:22:06,647 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:06,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:06,647 INFO L82 PathProgramCache]: Analyzing trace with hash -692384328, now seen corresponding path program 3 times [2021-10-11 00:22:06,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:06,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695430163] [2021-10-11 00:22:06,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:06,659 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:22:06,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102848052] [2021-10-11 00:22:06,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:22:06,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-11 00:22:06,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:22:06,706 WARN L261 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 87 conjunts are in the unsatisfiable core [2021-10-11 00:22:06,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:22:07,178 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 00:22:07,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695430163] [2021-10-11 00:22:07,179 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:22:07,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102848052] [2021-10-11 00:22:07,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:22:07,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-10-11 00:22:07,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405008961] [2021-10-11 00:22:07,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-10-11 00:22:07,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:07,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-11 00:22:07,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-11 00:22:07,180 INFO L87 Difference]: Start difference. First operand 179 states and 205 transitions. Second operand 16 states. [2021-10-11 00:22:14,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:14,173 INFO L93 Difference]: Finished difference Result 247 states and 283 transitions. [2021-10-11 00:22:14,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-11 00:22:14,174 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2021-10-11 00:22:14,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:14,176 INFO L225 Difference]: With dead ends: 247 [2021-10-11 00:22:14,176 INFO L226 Difference]: Without dead ends: 237 [2021-10-11 00:22:14,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2021-10-11 00:22:14,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-10-11 00:22:14,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 173. [2021-10-11 00:22:14,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2021-10-11 00:22:14,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 197 transitions. [2021-10-11 00:22:14,222 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 197 transitions. Word has length 58 [2021-10-11 00:22:14,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:14,222 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 197 transitions. [2021-10-11 00:22:14,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-10-11 00:22:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 197 transitions. [2021-10-11 00:22:14,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-11 00:22:14,223 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:14,223 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:14,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:22:14,451 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:14,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:14,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1566045482, now seen corresponding path program 2 times [2021-10-11 00:22:14,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:14,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838207356] [2021-10-11 00:22:14,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:14,456 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:22:14,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [680357990] [2021-10-11 00:22:14,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:22:14,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:22:14,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:22:14,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-11 00:22:14,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:22:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 48 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 00:22:14,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838207356] [2021-10-11 00:22:14,784 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:22:14,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680357990] [2021-10-11 00:22:14,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:22:14,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-11 00:22:14,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95165887] [2021-10-11 00:22:14,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-10-11 00:22:14,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:14,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-11 00:22:14,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-11 00:22:14,786 INFO L87 Difference]: Start difference. First operand 173 states and 197 transitions. Second operand 13 states. [2021-10-11 00:22:15,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:15,485 INFO L93 Difference]: Finished difference Result 386 states and 441 transitions. [2021-10-11 00:22:15,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-11 00:22:15,486 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 63 [2021-10-11 00:22:15,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:15,488 INFO L225 Difference]: With dead ends: 386 [2021-10-11 00:22:15,488 INFO L226 Difference]: Without dead ends: 283 [2021-10-11 00:22:15,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2021-10-11 00:22:15,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-10-11 00:22:15,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 200. [2021-10-11 00:22:15,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2021-10-11 00:22:15,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 231 transitions. [2021-10-11 00:22:15,545 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 231 transitions. Word has length 63 [2021-10-11 00:22:15,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:15,546 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 231 transitions. [2021-10-11 00:22:15,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-10-11 00:22:15,546 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 231 transitions. [2021-10-11 00:22:15,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-11 00:22:15,547 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:15,547 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:15,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-11 00:22:15,762 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:15,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:15,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1339399091, now seen corresponding path program 4 times [2021-10-11 00:22:15,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:15,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107802054] [2021-10-11 00:22:15,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:15,769 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:22:15,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858819168] [2021-10-11 00:22:15,770 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:22:15,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 00:22:15,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:22:15,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:22:15,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:22:15,929 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 43 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 00:22:15,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107802054] [2021-10-11 00:22:15,930 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:22:15,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858819168] [2021-10-11 00:22:15,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:22:15,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-11 00:22:15,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62907290] [2021-10-11 00:22:15,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:22:15,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:15,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:22:15,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:22:15,932 INFO L87 Difference]: Start difference. First operand 200 states and 231 transitions. Second operand 7 states. [2021-10-11 00:22:16,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:16,170 INFO L93 Difference]: Finished difference Result 404 states and 470 transitions. [2021-10-11 00:22:16,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 00:22:16,171 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2021-10-11 00:22:16,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:16,173 INFO L225 Difference]: With dead ends: 404 [2021-10-11 00:22:16,173 INFO L226 Difference]: Without dead ends: 250 [2021-10-11 00:22:16,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:22:16,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-11 00:22:16,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 219. [2021-10-11 00:22:16,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-10-11 00:22:16,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 260 transitions. [2021-10-11 00:22:16,233 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 260 transitions. Word has length 67 [2021-10-11 00:22:16,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:16,233 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 260 transitions. [2021-10-11 00:22:16,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:22:16,233 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 260 transitions. [2021-10-11 00:22:16,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-11 00:22:16,234 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:16,234 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:16,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:22:16,450 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:16,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:16,451 INFO L82 PathProgramCache]: Analyzing trace with hash 517253963, now seen corresponding path program 3 times [2021-10-11 00:22:16,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:16,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631214790] [2021-10-11 00:22:16,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:16,464 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:22:16,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905894224] [2021-10-11 00:22:16,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:22:16,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-11 00:22:16,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:22:16,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-11 00:22:16,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:22:16,614 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 51 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-10-11 00:22:16,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631214790] [2021-10-11 00:22:16,615 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:22:16,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905894224] [2021-10-11 00:22:16,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:22:16,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-11 00:22:16,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969141624] [2021-10-11 00:22:16,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:22:16,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:16,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:22:16,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:22:16,619 INFO L87 Difference]: Start difference. First operand 219 states and 260 transitions. Second operand 6 states. [2021-10-11 00:22:16,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:16,818 INFO L93 Difference]: Finished difference Result 245 states and 280 transitions. [2021-10-11 00:22:16,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:22:16,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2021-10-11 00:22:16,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:16,821 INFO L225 Difference]: With dead ends: 245 [2021-10-11 00:22:16,821 INFO L226 Difference]: Without dead ends: 243 [2021-10-11 00:22:16,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:22:16,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-10-11 00:22:16,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 219. [2021-10-11 00:22:16,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-10-11 00:22:16,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 256 transitions. [2021-10-11 00:22:16,875 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 256 transitions. Word has length 75 [2021-10-11 00:22:16,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:16,875 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 256 transitions. [2021-10-11 00:22:16,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:22:16,875 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 256 transitions. [2021-10-11 00:22:16,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-11 00:22:16,875 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:22:16,876 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:22:17,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-11 00:22:17,076 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:22:17,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:22:17,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1315727183, now seen corresponding path program 5 times [2021-10-11 00:22:17,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:22:17,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300280940] [2021-10-11 00:22:17,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:22:17,089 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:22:17,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008383741] [2021-10-11 00:22:17,089 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:22:17,184 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-11 00:22:17,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:22:17,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-11 00:22:17,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:22:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 95 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-10-11 00:22:17,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300280940] [2021-10-11 00:22:17,420 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:22:17,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008383741] [2021-10-11 00:22:17,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:22:17,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-11 00:22:17,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981864357] [2021-10-11 00:22:17,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-10-11 00:22:17,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:22:17,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-11 00:22:17,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-11 00:22:17,423 INFO L87 Difference]: Start difference. First operand 219 states and 256 transitions. Second operand 13 states. [2021-10-11 00:22:17,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:22:17,717 INFO L93 Difference]: Finished difference Result 219 states and 256 transitions. [2021-10-11 00:22:17,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 00:22:17,718 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 84 [2021-10-11 00:22:17,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:22:17,718 INFO L225 Difference]: With dead ends: 219 [2021-10-11 00:22:17,718 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:22:17,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2021-10-11 00:22:17,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:22:17,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:22:17,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:22:17,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:22:17,720 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 84 [2021-10-11 00:22:17,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:22:17,720 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:22:17,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-10-11 00:22:17,720 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:22:17,721 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:22:17,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-11 00:22:17,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:22:18,346 WARN L197 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 169 [2021-10-11 00:22:18,739 WARN L197 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 169 [2021-10-11 00:22:18,970 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 156 [2021-10-11 00:22:19,143 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 139 [2021-10-11 00:22:19,404 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 166 [2021-10-11 00:22:19,625 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 155 [2021-10-11 00:22:20,829 WARN L197 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 157 DAG size of output: 68 [2021-10-11 00:22:22,096 WARN L197 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 165 DAG size of output: 68 [2021-10-11 00:22:22,849 WARN L197 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 58 [2021-10-11 00:22:23,517 WARN L197 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 78 [2021-10-11 00:22:24,173 WARN L197 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 88 [2021-10-11 00:22:25,325 WARN L197 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 160 DAG size of output: 66 [2021-10-11 00:22:26,126 WARN L197 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 68 [2021-10-11 00:22:26,129 INFO L258 CegarLoopResult]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse1 (= ULTIMATE.start_main_~r~0 1)) (.cse8 (<= ULTIMATE.start_main_~x~0 2)) (.cse2 (= ULTIMATE.start_main_~q~0 1)) (.cse10 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse9 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (= ULTIMATE.start_main_~p~0 0)) (.cse11 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse12 (= ULTIMATE.start_main_~r~0 0)) (.cse13 (= ULTIMATE.start_main_~p~0 1)) (.cse14 (<= 1 ULTIMATE.start_main_~x~0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse7 (<= 1 ULTIMATE.start_main_~b~0)) (.cse6 (<= ULTIMATE.start_main_~y~0 2))) (or (and .cse0 .cse1 .cse2 .cse3 (< ULTIMATE.start_main_~c~0 2) (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~s~0 0) .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse5 .cse6 .cse7) (let ((.cse15 (div (+ (* ULTIMATE.start_main_~c~0 (- 1)) 2) 2))) (and (or (and .cse0 (= (+ ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~r~0) 0) .cse1 .cse3 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) .cse8 .cse9 (= (+ ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0) 1) .cse4 .cse5) (and .cse10 .cse3 .cse8 .cse11 .cse12 .cse9 (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~s~0 (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1)) .cse13 .cse14 .cse4)) (< 0 (+ (div (+ (* ULTIMATE.start_main_~b~0 (- 1)) 2) 2) ULTIMATE.start_main_~b~0)) (< ULTIMATE.start_main_~c~0 .cse15) (< 0 (+ ULTIMATE.start_main_~c~0 .cse15)) .cse6)) (and .cse0 .cse1 .cse8 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 2))) .cse14 (= (+ ULTIMATE.start_main_~s~0 2) 0) .cse2 .cse10 .cse3 .cse9 .cse4 .cse5 (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0)) (and .cse11 (<= ULTIMATE.start_main_~a~0 2) .cse12 .cse13 (= ULTIMATE.start_main_~s~0 1) .cse14 (= ULTIMATE.start_main_~q~0 0) .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse7 .cse6))) [2021-10-11 00:22:26,129 INFO L262 CegarLoopResult]: For program point L35-3(lines 35 73) no Hoare annotation was computed. [2021-10-11 00:22:26,129 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 00:22:26,129 INFO L262 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-10-11 00:22:26,130 INFO L258 CegarLoopResult]: At program point L11-2(lines 10 16) the Hoare annotation is: (let ((.cse21 (= ULTIMATE.start_main_~r~0 0)) (.cse9 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0)) (.cse22 (= ULTIMATE.start_main_~p~0 1)) (.cse23 (= ULTIMATE.start_main_~s~0 1)) (.cse24 (= ULTIMATE.start_main_~q~0 0)) (.cse25 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse15 (= ULTIMATE.start_main_~r~0 1)) (.cse16 (= ULTIMATE.start_main_~q~0 1)) (.cse17 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse18 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse13 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse19 (= ULTIMATE.start_main_~s~0 0)) (.cse20 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse7 (= ULTIMATE.start_main_~p~0 0))) (let ((.cse0 (= ULTIMATE.start_main_~d~0 2)) (.cse1 (div (* ULTIMATE.start_main_~v~0 (- 1)) (- 2))) (.cse6 (let ((.cse26 (<= ULTIMATE.start_main_~x~0 2))) (or (and .cse26 .cse18 .cse21 .cse13 .cse9 .cse22 .cse23 .cse24 .cse25) (and (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) .cse15 .cse16 .cse17 .cse26 .cse18 .cse13 .cse19 .cse20 .cse7)))) (.cse8 (= ULTIMATE.start_main_~k~0 0)) (.cse11 (let ((.cse14 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0))) (or (and .cse14 .cse15 .cse16 .cse17 .cse18 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse19 .cse20 .cse7) (and .cse14 .cse18 .cse21 .cse13 .cse9 .cse22 .cse23 .cse24 .cse25)))) (.cse2 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~y~0)) (.cse3 (<= ULTIMATE.start_main_~c~0 2)) (.cse4 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~y~0)) (.cse5 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse12 (= ULTIMATE.start_main_~d~0 1)) (.cse10 (<= 1 ULTIMATE.start_main_~b~0))) (or (and .cse0 (<= 1 (div ULTIMATE.start_main_~v~0 2)) (<= .cse1 ULTIMATE.start_main_~b~0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse0 (<= ULTIMATE.start_main_~b~0 .cse1) .cse9 .cse5 (= (mod ULTIMATE.start_main_~v~0 (- 2)) 0) (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0) .cse6 .cse10) (and .cse11 .cse8 .cse9 .cse3 .cse5 .cse12 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse10) (and .cse11 .cse13 .cse2 .cse3 .cse4 .cse5 .cse12 .cse10)))) [2021-10-11 00:22:26,130 INFO L262 CegarLoopResult]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-10-11 00:22:26,130 INFO L258 CegarLoopResult]: At program point L11-5(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~k~0 0)) (.cse10 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse11 (= ULTIMATE.start_main_~r~0 1)) (.cse12 (= ULTIMATE.start_main_~q~0 1)) (.cse13 (= ULTIMATE.start_main_~s~0 0)) (.cse14 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse15 (= ULTIMATE.start_main_~p~0 0)) (.cse1 (<= ULTIMATE.start_main_~x~0 2)) (.cse2 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse3 (= ULTIMATE.start_main_~r~0 0)) (.cse4 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0)) (.cse6 (= ULTIMATE.start_main_~p~0 1)) (.cse7 (= ULTIMATE.start_main_~s~0 1)) (.cse8 (= ULTIMATE.start_main_~q~0 0)) (.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse17 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse16 (<= ULTIMATE.start_main_~y~0 2)) (.cse18 (<= 1 ULTIMATE.start_main_~b~0))) (or (and .cse0 (= ULTIMATE.start_main_~d~0 2) (<= ULTIMATE.start_main_~b~0 (div (* ULTIMATE.start_main_~v~0 (- 1)) (- 2))) (or (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse10 .cse11 .cse12 .cse2 .cse4 .cse13 .cse14 .cse15 .cse16)) .cse17 (= (mod ULTIMATE.start_main_~v~0 (- 2)) 0) (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0) .cse18) (and .cse0 (let ((.cse19 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0))) (or (and .cse10 .cse19 .cse11 .cse12 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse2 .cse4 .cse13 .cse14 .cse15) (and .cse19 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9))) .cse17 (= ULTIMATE.start_main_~d~0 1) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse16 .cse18))) [2021-10-11 00:22:26,130 INFO L262 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-10-11 00:22:26,130 INFO L262 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-10-11 00:22:26,130 INFO L258 CegarLoopResult]: At program point L11-8(lines 10 16) the Hoare annotation is: (let ((.cse13 (<= ULTIMATE.start_main_~x~0 2)) (.cse16 (= ULTIMATE.start_main_~p~0 1)) (.cse19 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse14 (= ULTIMATE.start_main_~r~0 0)) (.cse15 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0)) (.cse17 (= ULTIMATE.start_main_~s~0 1)) (.cse18 (= ULTIMATE.start_main_~q~0 0)) (.cse21 (<= 1 ULTIMATE.start_main_~b~0)) (.cse0 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse2 (= ULTIMATE.start_main_~r~0 1)) (.cse22 (= ULTIMATE.start_main_~d~0 2)) (.cse3 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse4 (= ULTIMATE.start_main_~s~0 0)) (.cse6 (= ULTIMATE.start_main_~q~0 1)) (.cse7 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse8 (= ULTIMATE.start_main_~k~0 0)) (.cse9 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse23 (div (* ULTIMATE.start_main_~v~0 (- 1)) (- 2))) (.cse20 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse10 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse11 (= ULTIMATE.start_main_~p~0 0)) (.cse12 (<= ULTIMATE.start_main_~y~0 2))) (or (and (let ((.cse1 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0)) (.cse5 (= ULTIMATE.start_main_~d~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse1 .cse13 .cse8 .cse3 .cse9 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse5))) .cse20 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse21) (and .cse13 .cse22 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse16 (= (mod ULTIMATE.start_main_~v~0 (- 2)) 0) .cse19 .cse8 (<= ULTIMATE.start_main_~b~0 .cse23) (<= (* 2 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~c~0) .cse14 .cse9 .cse15 .cse17 (<= (* 2 .cse23) 2) .cse18 .cse20 .cse21) (and .cse0 .cse2 .cse22 (<= 1 (div ULTIMATE.start_main_~v~0 2)) .cse3 .cse4 .cse6 .cse7 .cse8 .cse9 (<= .cse23 ULTIMATE.start_main_~b~0) .cse20 .cse10 .cse11 .cse12))) [2021-10-11 00:22:26,131 INFO L262 CegarLoopResult]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-10-11 00:22:26,131 INFO L258 CegarLoopResult]: At program point L11-11(lines 55 56) the Hoare annotation is: (let ((.cse12 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse13 (= ULTIMATE.start_main_~r~0 1)) (.cse1 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse15 (= ULTIMATE.start_main_~s~0 0)) (.cse4 (= ULTIMATE.start_main_~d~0 1)) (.cse16 (= ULTIMATE.start_main_~q~0 1)) (.cse17 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse19 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse20 (= ULTIMATE.start_main_~p~0 0)) (.cse21 (<= ULTIMATE.start_main_~y~0 2)) (.cse14 (= ULTIMATE.start_main_~d~0 2)) (.cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse2 (= ULTIMATE.start_main_~p~0 1)) (.cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse5 (= ULTIMATE.start_main_~k~0 0)) (.cse18 (div (* ULTIMATE.start_main_~v~0 (- 1)) (- 2))) (.cse6 (= ULTIMATE.start_main_~r~0 0)) (.cse7 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse8 (= ULTIMATE.start_main_~s~0 1)) (.cse9 (= ULTIMATE.start_main_~q~0 0)) (.cse10 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse11 (<= 1 ULTIMATE.start_main_~b~0))) (or (and (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~b~0) (<= ULTIMATE.start_main_~x~0 2) .cse0 .cse1 .cse2 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0) .cse3 .cse4 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse12 .cse13 .cse14 (<= 1 (div ULTIMATE.start_main_~v~0 2)) .cse1 .cse15 .cse16 .cse17 .cse5 .cse7 (<= .cse18 ULTIMATE.start_main_~b~0) .cse10 .cse19 .cse20 .cse21) (and .cse12 .cse13 .cse1 .cse15 .cse4 (< ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0) .cse16 .cse17 .cse5 .cse7 (<= 1 ULTIMATE.start_main_~v~0) .cse10 .cse19 .cse20 .cse21 .cse11) (and .cse14 .cse0 .cse2 (<= ULTIMATE.start_main_~c~0 2) (= (mod ULTIMATE.start_main_~v~0 (- 2)) 0) (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0) .cse3 .cse5 (<= ULTIMATE.start_main_~b~0 .cse18) .cse6 .cse7 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) .cse8 .cse9 .cse10 .cse11))) [2021-10-11 00:22:26,131 INFO L262 CegarLoopResult]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-10-11 00:22:26,131 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 00:22:26,131 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:22:26,131 INFO L265 CegarLoopResult]: At program point L11-14(lines 10 16) the Hoare annotation is: true [2021-10-11 00:22:26,131 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:22:26,131 INFO L262 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-10-11 00:22:26,131 INFO L262 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-10-11 00:22:26,131 INFO L262 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-10-11 00:22:26,131 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-10-11 00:22:26,132 INFO L262 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-10-11 00:22:26,132 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 00:22:26,132 INFO L262 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-10-11 00:22:26,132 INFO L262 CegarLoopResult]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-10-11 00:22:26,132 INFO L262 CegarLoopResult]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2021-10-11 00:22:26,132 INFO L262 CegarLoopResult]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2021-10-11 00:22:26,132 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 00:22:26,132 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 00:22:26,132 INFO L258 CegarLoopResult]: At program point L49-2(lines 49 59) the Hoare annotation is: (let ((.cse5 (= ULTIMATE.start_main_~r~0 0)) (.cse7 (= ULTIMATE.start_main_~p~0 1)) (.cse8 (= ULTIMATE.start_main_~s~0 1)) (.cse9 (= ULTIMATE.start_main_~q~0 0)) (.cse10 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse11 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse12 (= ULTIMATE.start_main_~r~0 1)) (.cse13 (= ULTIMATE.start_main_~q~0 1)) (.cse14 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse3 (<= ULTIMATE.start_main_~x~0 2)) (.cse4 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse15 (= ULTIMATE.start_main_~s~0 0)) (.cse16 (= ULTIMATE.start_main_~p~0 0)) (.cse17 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0))) (let ((.cse0 (= ULTIMATE.start_main_~k~0 0)) (.cse6 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0)) (.cse18 (<= 1 ULTIMATE.start_main_~b~0)) (.cse19 (= ULTIMATE.start_main_~d~0 2)) (.cse21 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse20 (div (* ULTIMATE.start_main_~v~0 (- 1)) (- 2))) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse22 (or (and .cse3 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse4 .cse5 .cse7 .cse8 .cse9 .cse10) (and .cse11 .cse12 .cse13 .cse14 .cse3 .cse4 .cse15 .cse16 .cse17)))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~d~0 1) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) (let ((.cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0))) (or (and .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse11 .cse2 .cse12 .cse13 .cse14 .cse4 .cse15 .cse16 .cse17 (<= ULTIMATE.start_main_~y~0 2)))) .cse18) (and .cse0 .cse19 (<= ULTIMATE.start_main_~b~0 .cse20) .cse21 .cse6 .cse1 (= (mod ULTIMATE.start_main_~v~0 (- 2)) 0) (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0) .cse22 .cse18) (and .cse19 .cse21 (<= 1 (div ULTIMATE.start_main_~v~0 2)) (<= .cse20 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~c~0 2) (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~y~0) .cse1 .cse22 .cse16)))) [2021-10-11 00:22:26,132 INFO L262 CegarLoopResult]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2021-10-11 00:22:26,132 INFO L262 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2021-10-11 00:22:26,132 INFO L262 CegarLoopResult]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-10-11 00:22:26,133 INFO L262 CegarLoopResult]: For program point L8-4(line 8) no Hoare annotation was computed. [2021-10-11 00:22:26,133 INFO L262 CegarLoopResult]: For program point L8-6(line 8) no Hoare annotation was computed. [2021-10-11 00:22:26,133 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:22:26,133 INFO L265 CegarLoopResult]: At program point L75(lines 18 76) the Hoare annotation is: true [2021-10-11 00:22:26,133 INFO L258 CegarLoopResult]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse24 (= ULTIMATE.start_main_~r~0 1)) (.cse25 (= ULTIMATE.start_main_~q~0 1)) (.cse26 (= ULTIMATE.start_main_~s~0 0)) (.cse7 (= ULTIMATE.start_main_~p~0 0)) (.cse27 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (.cse21 (<= ULTIMATE.start_main_~x~0 2)) (.cse22 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse17 (= ULTIMATE.start_main_~r~0 0)) (.cse13 (= ULTIMATE.start_main_~p~0 1)) (.cse18 (= ULTIMATE.start_main_~s~0 1)) (.cse23 (<= 1 ULTIMATE.start_main_~x~0)) (.cse10 (= ULTIMATE.start_main_~q~0 0)) (.cse15 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse19 (<= ULTIMATE.start_main_~y~0 2))) (let ((.cse0 (= ULTIMATE.start_main_~k~0 2)) (.cse1 (= ULTIMATE.start_main_~d~0 2)) (.cse3 (div (* ULTIMATE.start_main_~v~0 (- 1)) (- 2))) (.cse5 (or (and (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) .cse24 .cse25 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse26 .cse7 .cse27 .cse19) (and .cse21 .cse22 .cse17 .cse13 .cse18 .cse23 .cse10 .cse15 .cse19))) (.cse6 (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 2))) (.cse11 (* 2 ULTIMATE.start_main_~b~0)) (.cse8 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0)) (.cse9 (= ULTIMATE.start_main_~d~0 1)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse12 (< (* 2 ULTIMATE.start_main_~c~0) 2)) (.cse16 (= ULTIMATE.start_main_~k~0 0)) (.cse14 (<= ULTIMATE.start_main_~c~0 2)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse20 (<= 1 ULTIMATE.start_main_~b~0))) (or (and .cse0 .cse1 .cse2 (<= 1 (div ULTIMATE.start_main_~v~0 2)) (<= .cse3 ULTIMATE.start_main_~b~0) .cse4 .cse5 (= ULTIMATE.start_main_~y~0 .cse6) .cse7) (and .cse0 (or (and .cse8 .cse4 .cse9 .cse5) (and .cse1 (<= ULTIMATE.start_main_~b~0 .cse3) (<= (* 2 .cse3) 2) .cse4 (= (mod ULTIMATE.start_main_~v~0 (- 2)) 0) .cse5)) .cse2 (= ULTIMATE.start_main_~x~0 .cse6) .cse10 (<= .cse11 ULTIMATE.start_main_~x~0) .cse12) (and (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse13 .cse14 .cse15 .cse16 .cse17 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) .cse18 (<= 1 ULTIMATE.start_main_~c~0) .cse10 .cse4 .cse19 .cse20) (and (= ULTIMATE.start_main_~k~0 1) .cse21 (<= 0 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~b~0) .cse22 .cse13 .cse23 (< ULTIMATE.start_main_~x~0 .cse11) .cse8 .cse15 .cse9 .cse17 .cse2 .cse18 .cse10 .cse4 .cse12 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse19) (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) .cse24 .cse25 .cse16 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse26 .cse14 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~y~0) .cse4 .cse27 .cse7 .cse20)))) [2021-10-11 00:22:26,133 INFO L262 CegarLoopResult]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2021-10-11 00:22:26,134 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 00:22:26,134 INFO L262 CegarLoopResult]: For program point L43(lines 43 44) no Hoare annotation was computed. [2021-10-11 00:22:26,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:22:26 BoogieIcfgContainer [2021-10-11 00:22:26,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:22:26,179 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:22:26,180 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:22:26,180 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:22:26,180 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:21:45" (3/4) ... [2021-10-11 00:22:26,183 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:22:26,196 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-11 00:22:26,196 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 00:22:26,197 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:22:26,197 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:22:26,246 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b58bc59-8c20-4b0e-883d-6243212dd45d/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:22:26,246 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:22:26,247 INFO L168 Benchmark]: Toolchain (without parser) took 40979.15 ms. Allocated memory was 107.0 MB in the beginning and 226.5 MB in the end (delta: 119.5 MB). Free memory was 71.0 MB in the beginning and 126.7 MB in the end (delta: -55.6 MB). Peak memory consumption was 64.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:26,247 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 107.0 MB. Free memory was 79.5 MB in the beginning and 79.4 MB in the end (delta: 28.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:22:26,248 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.45 ms. Allocated memory is still 107.0 MB. Free memory was 70.8 MB in the beginning and 81.7 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:26,248 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.89 ms. Allocated memory is still 107.0 MB. Free memory was 81.3 MB in the beginning and 79.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:22:26,249 INFO L168 Benchmark]: Boogie Preprocessor took 33.71 ms. Allocated memory is still 107.0 MB. Free memory was 79.8 MB in the beginning and 78.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:26,249 INFO L168 Benchmark]: RCFGBuilder took 340.54 ms. Allocated memory is still 107.0 MB. Free memory was 78.7 MB in the beginning and 60.9 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:26,250 INFO L168 Benchmark]: TraceAbstraction took 40219.22 ms. Allocated memory was 107.0 MB in the beginning and 226.5 MB in the end (delta: 119.5 MB). Free memory was 60.8 MB in the beginning and 130.9 MB in the end (delta: -70.1 MB). Peak memory consumption was 117.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:26,250 INFO L168 Benchmark]: Witness Printer took 66.71 ms. Allocated memory is still 226.5 MB. Free memory was 130.9 MB in the beginning and 126.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:22:26,252 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 107.0 MB. Free memory was 79.5 MB in the beginning and 79.4 MB in the end (delta: 28.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.45 ms. Allocated memory is still 107.0 MB. Free memory was 70.8 MB in the beginning and 81.7 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.89 ms. Allocated memory is still 107.0 MB. Free memory was 81.3 MB in the beginning and 79.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.71 ms. Allocated memory is still 107.0 MB. Free memory was 79.8 MB in the beginning and 78.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 340.54 ms. Allocated memory is still 107.0 MB. Free memory was 78.7 MB in the beginning and 60.9 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 40219.22 ms. Allocated memory was 107.0 MB in the beginning and 226.5 MB in the end (delta: 119.5 MB). Free memory was 60.8 MB in the beginning and 130.9 MB in the end (delta: -70.1 MB). Peak memory consumption was 117.8 MB. Max. memory is 16.1 GB. * Witness Printer took 66.71 ms. Allocated memory is still 226.5 MB. Free memory was 130.9 MB in the beginning and 126.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((((k == 0 && cond == 1) && d == 1) && b <= c) && (((((((((b == v && x <= 2) && c == a) && r == 0) && c == x) && p == 1) && s == 1) && q == 0) && b == y) || (((((((((a <= y && b == v) && r == 1) && q == 1) && b < a) && c == a) && s == 0) && p == 0) && b == x) && y <= 2))) && 1 <= b) || (((((((((k == 0 && d == 2) && b <= v * -1 / -2) && 1 == cond) && c == x) && cond == 1) && v % -2 == 0) && v <= c) && ((((((((x <= 2 && a == x) && c == a) && r == 0) && p == 1) && s == 1) && q == 0) && b == y) || ((((((((a <= y && r == 1) && q == 1) && b < a) && x <= 2) && c == a) && s == 0) && p == 0) && b == x))) && 1 <= b)) || (((((((((d == 2 && 1 == cond) && 1 <= v / 2) && v * -1 / -2 <= b) && c == y) && c <= 2) && c + b * k == y) && cond == 1) && ((((((((x <= 2 && a == x) && c == a) && r == 0) && p == 1) && s == 1) && q == 0) && b == y) || ((((((((a <= y && r == 1) && q == 1) && b < a) && x <= 2) && c == a) && s == 0) && p == 0) && b == x))) && p == 0) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: (((((((((((((((((v <= b && x <= 2) && a == x) && c == a) && p == 1) && b <= v) && b == y) && d == 1) && b <= c) && k == 0) && r == 0) && 1 == cond) && s == 1) && q == 0) && cond == 1) && 1 <= b) || ((((((((((((((a <= y && r == 1) && d == 2) && 1 <= v / 2) && c == a) && s == 0) && q == 1) && b < a) && k == 0) && 1 == cond) && v * -1 / -2 <= b) && cond == 1) && b == x) && p == 0) && y <= 2)) || (((((((((((((((a <= y && r == 1) && c == a) && s == 0) && d == 1) && v < c) && q == 1) && b < a) && k == 0) && 1 == cond) && 1 <= v) && cond == 1) && b == x) && p == 0) && y <= 2) && 1 <= b)) || (((((((((((((((d == 2 && a == x) && p == 1) && c <= 2) && v % -2 == 0) && v <= c) && b == y) && k == 0) && b <= v * -1 / -2) && r == 0) && 1 == cond) && c == x) && s == 1) && q == 0) && cond == 1) && 1 <= b) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((k == 0 && d == 2) && b <= v * -1 / -2) && (((((((((x <= 2 && c == a) && r == 0) && 1 == cond) && c == x) && p == 1) && s == 1) && q == 0) && b == y) || ((((((((a <= y && r == 1) && q == 1) && c == a) && 1 == cond) && s == 0) && b == x) && p == 0) && y <= 2))) && cond == 1) && v % -2 == 0) && v <= c) && 1 <= b) || ((((((k == 0 && ((((((((((a <= y && b == v) && r == 1) && q == 1) && b < a) && c == a) && 1 == cond) && s == 0) && b == x) && p == 0) || (((((((((b == v && x <= 2) && c == a) && r == 0) && 1 == cond) && c == x) && p == 1) && s == 1) && q == 0) && b == y))) && cond == 1) && d == 1) && b <= c) && y <= 2) && 1 <= b) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((((a == y && r == 1) && q == 1) && b < a) && c < 2) && 1 <= c) && s == 0) && cond == 1) && b == x) && p == 0) && y <= 2) && 1 <= b) || ((((((((((((((a == y && s + r == 0) && r == 1) && b < a) && x == b + y) && x <= 2) && 1 == cond) && q + p == 1) && cond == 1) && p == 0) || ((((((((((1 <= y && b < a) && x <= 2) && a == x) && r == 0) && 1 == cond) && b == q * x + y) && s == q * r + 1) && p == 1) && 1 <= x) && cond == 1)) && 0 < (b * -1 + 2) / 2 + b) && c < (c * -1 + 2) / 2) && 0 < c + (c * -1 + 2) / 2) && y <= 2)) || ((((((((((((a == y && r == 1) && x <= 2) && x == b + y * 2) && 1 <= x) && s + 2 == 0) && q == 1) && 1 <= y) && b < a) && 1 == cond) && cond == 1) && p == 0) && 2 * y <= x)) || ((((((((((a == x && a <= 2) && r == 0) && p == 1) && s == 1) && 1 <= x) && q == 0) && cond == 1) && b == y) && 1 <= b) && y <= 2) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((((((((((k == 2 && d == 2) && 1 == cond) && 1 <= v / 2) && v * -1 / -2 <= b) && cond == 1) && ((((((((a <= y && r == 1) && q == 1) && b < a) && s == 0) && p == 0) && b == x) && y <= 2) || ((((((((x <= 2 && a == x) && r == 0) && p == 1) && s == 1) && 1 <= x) && q == 0) && b == y) && y <= 2))) && y == c + b * 2) && p == 0) || ((((((k == 2 && ((((b <= v && cond == 1) && d == 1) && ((((((((a <= y && r == 1) && q == 1) && b < a) && s == 0) && p == 0) && b == x) && y <= 2) || ((((((((x <= 2 && a == x) && r == 0) && p == 1) && s == 1) && 1 <= x) && q == 0) && b == y) && y <= 2))) || (((((d == 2 && b <= v * -1 / -2) && 2 * (v * -1 / -2) <= 2) && cond == 1) && v % -2 == 0) && ((((((((a <= y && r == 1) && q == 1) && b < a) && s == 0) && p == 0) && b == x) && y <= 2) || ((((((((x <= 2 && a == x) && r == 0) && p == 1) && s == 1) && 1 <= x) && q == 0) && b == y) && y <= 2))))) && 1 == cond) && x == c + b * 2) && q == 0) && 2 * b <= x) && 2 * c < 2)) || ((((((((((((c == a && p == 1) && c <= 2) && b == y) && k == 0) && r == 0) && c == x) && s == 1) && 1 <= c) && q == 0) && cond == 1) && y <= 2) && 1 <= b)) || ((((((((((((((((((k == 1 && x <= 2) && 0 <= c) && v <= b) && a == x) && p == 1) && 1 <= x) && x < 2 * b) && b <= v) && b == y) && d == 1) && r == 0) && 1 == cond) && s == 1) && q == 0) && cond == 1) && 2 * c < 2) && b <= x) && y <= 2)) || (((((((((((a == y && r == 1) && q == 1) && k == 0) && b < c) && s == 0) && c <= 2) && c + b * k == y) && cond == 1) && b == x) && p == 0) && 1 <= b) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((((((((a <= y && b == v) && r == 1) && c == a) && s == 0) && d == 1) && q == 1) && b < a) && k == 0) && 1 == cond) && b == x) && p == 0) && y <= 2) || (((((((((((b == v && x <= 2) && k == 0) && c == a) && 1 == cond) && r == 0) && c == x) && p == 1) && s == 1) && q == 0) && b == y) && d == 1)) && cond == 1) && b <= c) && 1 <= b) || ((((((((((((((((x <= 2 && d == 2) && a == x) && p == 1) && v % -2 == 0) && b == y) && k == 0) && b <= v * -1 / -2) && 2 * b <= c) && r == 0) && 1 == cond) && c == x) && s == 1) && 2 * (v * -1 / -2) <= 2) && q == 0) && cond == 1) && 1 <= b)) || ((((((((((((((a <= y && r == 1) && d == 2) && 1 <= v / 2) && c == a) && s == 0) && q == 1) && b < a) && k == 0) && 1 == cond) && v * -1 / -2 <= b) && cond == 1) && b == x) && p == 0) && y <= 2) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((d == 2 && 1 <= v / 2) && v * -1 / -2 <= b) && c == y) && c <= 2) && c + b * k == y) && cond == 1) && (((((((((x <= 2 && c == a) && r == 0) && 1 == cond) && c == x) && p == 1) && s == 1) && q == 0) && b == y) || (((((((((a <= y && r == 1) && q == 1) && b < a) && x <= 2) && c == a) && 1 == cond) && s == 0) && b == x) && p == 0))) && p == 0) || ((((((((k == 0 && d == 2) && b <= v * -1 / -2) && c == x) && cond == 1) && v % -2 == 0) && v <= c) && (((((((((x <= 2 && c == a) && r == 0) && 1 == cond) && c == x) && p == 1) && s == 1) && q == 0) && b == y) || (((((((((a <= y && r == 1) && q == 1) && b < a) && x <= 2) && c == a) && 1 == cond) && s == 0) && b == x) && p == 0))) && 1 <= b)) || ((((((((((((((((b == v && r == 1) && q == 1) && b < a) && c == a) && b < y) && s == 0) && b == x) && p == 0) || ((((((((b == v && c == a) && r == 0) && 1 == cond) && c == x) && p == 1) && s == 1) && q == 0) && b == y)) && k == 0) && c == x) && c <= 2) && cond == 1) && d == 1) && b <= c) && 1 <= b)) || ((((((((((((((((b == v && r == 1) && q == 1) && b < a) && c == a) && b < y) && s == 0) && b == x) && p == 0) || ((((((((b == v && c == a) && r == 0) && 1 == cond) && c == x) && p == 1) && s == 1) && q == 0) && b == y)) && 1 == cond) && c == y) && c <= 2) && c + b * k == y) && cond == 1) && d == 1) && 1 <= b) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 31.9s, OverallIterations: 27, TraceHistogramMax: 6, AutomataDifference: 17.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 969 SDtfs, 4509 SDslu, 3999 SDs, 0 SdLazy, 5307 SolverSat, 630 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 9.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1180 GetRequests, 759 SyntacticMatches, 4 SemanticMatches, 417 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 27 MinimizatonAttempts, 1117 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 51 NumberOfFragments, 1831 HoareAnnotationTreeSize, 9 FomulaSimplifications, 206532 FormulaSimplificationTreeSizeReduction, 1.6s HoareSimplificationTime, 9 FomulaSimplificationsInter, 26807 FormulaSimplificationTreeSizeReductionInter, 6.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 1010 NumberOfCodeBlocks, 931 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 983 ConstructedInterpolants, 0 QuantifiedInterpolants, 390033 SizeOfPredicates, 319 NumberOfNonLiveVariables, 3769 ConjunctsInSsa, 778 ConjunctsInUnsatCore, 27 InterpolantComputations, 10 PerfectInterpolantSequences, 488/653 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...