./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/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_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:59:27,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:59:27,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:59:27,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:59:27,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:59:27,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:59:27,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:59:27,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:59:27,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:59:27,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:59:27,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:59:27,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:59:27,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:59:27,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:59:27,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:59:27,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:59:27,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:59:27,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:59:27,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:59:27,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:59:27,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:59:27,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:59:27,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:59:27,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:59:27,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:59:27,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:59:27,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:59:27,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:59:27,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:59:27,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:59:27,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:59:27,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:59:27,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:59:27,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:59:27,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:59:27,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:59:27,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:59:27,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:59:27,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:59:27,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:59:27,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:59:27,987 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:59:28,042 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:59:28,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:59:28,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:59:28,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:59:28,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:59:28,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:59:28,046 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:59:28,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:59:28,047 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:59:28,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:59:28,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:59:28,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:59:28,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:59:28,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:59:28,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:59:28,049 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:59:28,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:59:28,050 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:59:28,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:59:28,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:59:28,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:59:28,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:59:28,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:59:28,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:59:28,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:59:28,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:59:28,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:59:28,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:59:28,053 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:59:28,053 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:59:28,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:59:28,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:59:28,054 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_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e [2021-10-21 19:59:28,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:59:28,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:59:28,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:59:28,424 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:59:28,425 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:59:28,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2021-10-21 19:59:28,505 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/data/b569a541c/f5311188cc3346a1b897575b4760d58b/FLAGa6e4a1c67 [2021-10-21 19:59:29,035 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:59:29,036 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2021-10-21 19:59:29,043 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/data/b569a541c/f5311188cc3346a1b897575b4760d58b/FLAGa6e4a1c67 [2021-10-21 19:59:29,412 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/data/b569a541c/f5311188cc3346a1b897575b4760d58b [2021-10-21 19:59:29,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:59:29,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:59:29,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:59:29,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:59:29,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:59:29,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:59:29" (1/1) ... [2021-10-21 19:59:29,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed7cecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:29, skipping insertion in model container [2021-10-21 19:59:29,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:59:29" (1/1) ... [2021-10-21 19:59:29,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:59:29,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:59:29,672 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2021-10-21 19:59:29,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:59:29,707 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:59:29,722 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2021-10-21 19:59:29,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:59:29,751 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:59:29,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:29 WrapperNode [2021-10-21 19:59:29,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:59:29,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:59:29,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:59:29,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:59:29,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:29" (1/1) ... [2021-10-21 19:59:29,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:29" (1/1) ... [2021-10-21 19:59:29,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:59:29,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:59:29,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:59:29,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:59:29,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:29" (1/1) ... [2021-10-21 19:59:29,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:29" (1/1) ... [2021-10-21 19:59:29,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:29" (1/1) ... [2021-10-21 19:59:29,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:29" (1/1) ... [2021-10-21 19:59:29,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:29" (1/1) ... [2021-10-21 19:59:29,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:29" (1/1) ... [2021-10-21 19:59:29,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:29" (1/1) ... [2021-10-21 19:59:29,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:59:29,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:59:29,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:59:29,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:59:29,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:29" (1/1) ... [2021-10-21 19:59:29,846 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:59:29,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:29,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:59:29,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:59:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:59:29,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:59:29,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:59:29,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:59:30,272 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:59:30,273 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2021-10-21 19:59:30,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:59:30 BoogieIcfgContainer [2021-10-21 19:59:30,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:59:30,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:59:30,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:59:30,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:59:30,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:59:29" (1/3) ... [2021-10-21 19:59:30,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30701b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:59:30, skipping insertion in model container [2021-10-21 19:59:30,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:29" (2/3) ... [2021-10-21 19:59:30,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30701b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:59:30, skipping insertion in model container [2021-10-21 19:59:30,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:59:30" (3/3) ... [2021-10-21 19:59:30,288 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2021-10-21 19:59:30,294 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:59:30,295 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-10-21 19:59:30,354 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:59:30,362 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:59:30,363 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-21 19:59:30,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:30,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:59:30,405 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:30,406 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:59:30,406 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:30,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:30,414 INFO L82 PathProgramCache]: Analyzing trace with hash -174497841, now seen corresponding path program 1 times [2021-10-21 19:59:30,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:30,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603092251] [2021-10-21 19:59:30,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:30,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:30,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:30,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603092251] [2021-10-21 19:59:30,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603092251] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:30,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:30,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:59:30,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718719804] [2021-10-21 19:59:30,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:59:30,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:30,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:59:30,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:59:30,741 INFO L87 Difference]: Start difference. First operand has 41 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:30,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:30,774 INFO L93 Difference]: Finished difference Result 79 states and 112 transitions. [2021-10-21 19:59:30,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:59:30,776 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-21 19:59:30,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:30,787 INFO L225 Difference]: With dead ends: 79 [2021-10-21 19:59:30,788 INFO L226 Difference]: Without dead ends: 37 [2021-10-21 19:59:30,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:59:30,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-21 19:59:30,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-21 19:59:30,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.21875) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:30,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-10-21 19:59:30,840 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 14 [2021-10-21 19:59:30,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:30,842 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-10-21 19:59:30,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:30,844 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-10-21 19:59:30,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 19:59:30,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:30,846 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:59:30,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:59:30,847 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:30,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:30,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1454170515, now seen corresponding path program 1 times [2021-10-21 19:59:30,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:30,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113333852] [2021-10-21 19:59:30,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:30,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:30,900 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:59:30,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133112619] [2021-10-21 19:59:30,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:30,902 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:30,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:30,909 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:30,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:59:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:31,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:59:31,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:31,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:31,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:31,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113333852] [2021-10-21 19:59:31,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:59:31,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133112619] [2021-10-21 19:59:31,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133112619] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:31,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:31,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:59:31,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553723898] [2021-10-21 19:59:31,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:59:31,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:31,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:59:31,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:59:31,312 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:31,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:31,476 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2021-10-21 19:59:31,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:59:31,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-21 19:59:31,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:31,480 INFO L225 Difference]: With dead ends: 64 [2021-10-21 19:59:31,481 INFO L226 Difference]: Without dead ends: 60 [2021-10-21 19:59:31,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:59:31,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-21 19:59:31,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2021-10-21 19:59:31,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:31,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-21 19:59:31,493 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 15 [2021-10-21 19:59:31,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:31,494 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-21 19:59:31,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:31,494 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-21 19:59:31,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:59:31,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:31,496 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:59:31,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:31,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:31,718 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:31,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:31,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1580206288, now seen corresponding path program 1 times [2021-10-21 19:59:31,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:31,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852112314] [2021-10-21 19:59:31,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:31,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:31,747 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:59:31,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [426030294] [2021-10-21 19:59:31,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:31,757 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:31,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:31,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:31,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:59:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:31,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 19:59:31,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:32,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:32,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:32,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852112314] [2021-10-21 19:59:32,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:59:32,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426030294] [2021-10-21 19:59:32,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426030294] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:32,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:32,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-21 19:59:32,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132272471] [2021-10-21 19:59:32,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:59:32,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:32,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:59:32,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:59:32,614 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:33,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:33,359 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2021-10-21 19:59:33,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:59:33,360 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-21 19:59:33,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:33,361 INFO L225 Difference]: With dead ends: 79 [2021-10-21 19:59:33,361 INFO L226 Difference]: Without dead ends: 77 [2021-10-21 19:59:33,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 698.5ms TimeCoverageRelationStatistics Valid=151, Invalid=269, Unknown=0, NotChecked=0, Total=420 [2021-10-21 19:59:33,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-21 19:59:33,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 51. [2021-10-21 19:59:33,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 50 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2021-10-21 19:59:33,379 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 17 [2021-10-21 19:59:33,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:33,380 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2021-10-21 19:59:33,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:33,380 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2021-10-21 19:59:33,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 19:59:33,382 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:33,383 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:59:33,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:33,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:33,608 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:33,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:33,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1840022701, now seen corresponding path program 1 times [2021-10-21 19:59:33,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:33,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836022417] [2021-10-21 19:59:33,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:33,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:33,634 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:59:33,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592241856] [2021-10-21 19:59:33,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:33,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:33,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:33,648 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:33,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:59:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:33,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 19:59:33,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:34,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:34,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:34,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836022417] [2021-10-21 19:59:34,346 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:59:34,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592241856] [2021-10-21 19:59:34,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592241856] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:34,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:34,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 19:59:34,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077562406] [2021-10-21 19:59:34,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:59:34,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:34,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:59:34,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:59:34,350 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:34,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:34,778 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2021-10-21 19:59:34,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:59:34,779 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-21 19:59:34,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:34,780 INFO L225 Difference]: With dead ends: 75 [2021-10-21 19:59:34,780 INFO L226 Difference]: Without dead ends: 73 [2021-10-21 19:59:34,780 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 339.5ms TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:59:34,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-21 19:59:34,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 51. [2021-10-21 19:59:34,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 50 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:34,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-10-21 19:59:34,798 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 19 [2021-10-21 19:59:34,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:34,799 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-10-21 19:59:34,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:34,799 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-10-21 19:59:34,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 19:59:34,805 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:34,805 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:59:34,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:35,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:35,009 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:35,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:35,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1412177226, now seen corresponding path program 1 times [2021-10-21 19:59:35,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:35,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389836063] [2021-10-21 19:59:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:35,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:35,028 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:59:35,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086230036] [2021-10-21 19:59:35,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:35,029 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:35,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:35,030 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:35,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:59:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:35,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:59:35,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:35,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:35,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:35,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389836063] [2021-10-21 19:59:35,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:59:35,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086230036] [2021-10-21 19:59:35,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086230036] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:59:35,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:59:35,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 19:59:35,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435385971] [2021-10-21 19:59:35,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:59:35,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:35,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:59:35,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:59:35,302 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:35,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:35,464 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2021-10-21 19:59:35,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:59:35,464 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-21 19:59:35,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:35,466 INFO L225 Difference]: With dead ends: 140 [2021-10-21 19:59:35,466 INFO L226 Difference]: Without dead ends: 136 [2021-10-21 19:59:35,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 81.2ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:59:35,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-21 19:59:35,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 75. [2021-10-21 19:59:35,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.3) internal successors, (91), 74 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:35,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2021-10-21 19:59:35,496 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 20 [2021-10-21 19:59:35,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:35,496 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2021-10-21 19:59:35,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:35,496 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2021-10-21 19:59:35,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 19:59:35,497 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:35,497 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:59:35,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:35,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:35,698 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:35,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:35,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1264867958, now seen corresponding path program 1 times [2021-10-21 19:59:35,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:35,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027186977] [2021-10-21 19:59:35,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:35,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:35,715 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:59:35,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [235526308] [2021-10-21 19:59:35,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:35,720 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:35,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:35,721 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:35,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 19:59:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:35,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 19:59:35,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:36,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:36,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:36,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027186977] [2021-10-21 19:59:36,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:59:36,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235526308] [2021-10-21 19:59:36,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235526308] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:36,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:36,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:59:36,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597312399] [2021-10-21 19:59:36,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:59:36,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:36,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:59:36,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:59:36,086 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:36,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:36,247 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2021-10-21 19:59:36,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:59:36,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-21 19:59:36,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:36,252 INFO L225 Difference]: With dead ends: 95 [2021-10-21 19:59:36,252 INFO L226 Difference]: Without dead ends: 93 [2021-10-21 19:59:36,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 79.6ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:59:36,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-21 19:59:36,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2021-10-21 19:59:36,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.2911392405063291) internal successors, (102), 83 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:36,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2021-10-21 19:59:36,285 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 21 [2021-10-21 19:59:36,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:36,286 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2021-10-21 19:59:36,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:36,286 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2021-10-21 19:59:36,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:59:36,287 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:36,287 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:59:36,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:36,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-21 19:59:36,501 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:36,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:36,501 INFO L82 PathProgramCache]: Analyzing trace with hash 94063923, now seen corresponding path program 1 times [2021-10-21 19:59:36,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:36,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112532857] [2021-10-21 19:59:36,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:36,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:36,529 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:59:36,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [773855409] [2021-10-21 19:59:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:36,530 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:36,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:36,540 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:36,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 19:59:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:36,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-21 19:59:36,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:37,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:37,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:37,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112532857] [2021-10-21 19:59:37,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:59:37,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773855409] [2021-10-21 19:59:37,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773855409] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:59:37,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:59:37,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-21 19:59:37,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811951749] [2021-10-21 19:59:37,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:59:37,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:37,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:59:37,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:59:37,199 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:37,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:37,565 INFO L93 Difference]: Finished difference Result 119 states and 137 transitions. [2021-10-21 19:59:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:59:37,566 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-21 19:59:37,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:37,567 INFO L225 Difference]: With dead ends: 119 [2021-10-21 19:59:37,567 INFO L226 Difference]: Without dead ends: 117 [2021-10-21 19:59:37,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 258.4ms TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:59:37,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-21 19:59:37,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 101. [2021-10-21 19:59:37,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.3020833333333333) internal successors, (125), 100 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:37,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2021-10-21 19:59:37,583 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 22 [2021-10-21 19:59:37,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:37,583 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2021-10-21 19:59:37,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:37,584 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2021-10-21 19:59:37,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:59:37,584 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:37,585 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:59:37,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:37,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:37,809 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:37,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:37,809 INFO L82 PathProgramCache]: Analyzing trace with hash 62520889, now seen corresponding path program 1 times [2021-10-21 19:59:37,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:37,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578599172] [2021-10-21 19:59:37,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:37,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:37,828 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:59:37,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692818717] [2021-10-21 19:59:37,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:37,829 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:37,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:37,830 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:37,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 19:59:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:38,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:59:38,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:38,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:38,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578599172] [2021-10-21 19:59:38,147 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:59:38,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692818717] [2021-10-21 19:59:38,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692818717] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:38,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:38,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:59:38,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251598146] [2021-10-21 19:59:38,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:59:38,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:38,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:59:38,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:59:38,149 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:38,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:38,234 INFO L93 Difference]: Finished difference Result 192 states and 240 transitions. [2021-10-21 19:59:38,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:59:38,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-21 19:59:38,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:38,238 INFO L225 Difference]: With dead ends: 192 [2021-10-21 19:59:38,238 INFO L226 Difference]: Without dead ends: 190 [2021-10-21 19:59:38,239 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:59:38,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-10-21 19:59:38,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 141. [2021-10-21 19:59:38,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 136 states have (on average 1.2794117647058822) internal successors, (174), 140 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:38,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 174 transitions. [2021-10-21 19:59:38,264 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 174 transitions. Word has length 23 [2021-10-21 19:59:38,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:38,265 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 174 transitions. [2021-10-21 19:59:38,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:38,265 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 174 transitions. [2021-10-21 19:59:38,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 19:59:38,267 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:38,267 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:59:38,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:38,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-21 19:59:38,489 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:38,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:38,490 INFO L82 PathProgramCache]: Analyzing trace with hash 201274102, now seen corresponding path program 1 times [2021-10-21 19:59:38,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:38,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643026667] [2021-10-21 19:59:38,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:38,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:38,507 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:59:38,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259673568] [2021-10-21 19:59:38,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:38,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:38,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:38,509 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:38,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 19:59:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:38,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-21 19:59:38,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:39,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:39,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643026667] [2021-10-21 19:59:39,406 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:59:39,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259673568] [2021-10-21 19:59:39,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259673568] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:59:39,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:59:39,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-21 19:59:39,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108501515] [2021-10-21 19:59:39,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:59:39,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:39,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:59:39,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:59:39,408 INFO L87 Difference]: Start difference. First operand 141 states and 174 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:39,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:39,810 INFO L93 Difference]: Finished difference Result 157 states and 184 transitions. [2021-10-21 19:59:39,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:59:39,810 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-21 19:59:39,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:39,812 INFO L225 Difference]: With dead ends: 157 [2021-10-21 19:59:39,812 INFO L226 Difference]: Without dead ends: 155 [2021-10-21 19:59:39,812 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 328.9ms TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:59:39,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-21 19:59:39,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 141. [2021-10-21 19:59:39,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 136 states have (on average 1.2647058823529411) internal successors, (172), 140 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:39,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 172 transitions. [2021-10-21 19:59:39,831 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 172 transitions. Word has length 24 [2021-10-21 19:59:39,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:39,831 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 172 transitions. [2021-10-21 19:59:39,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:39,832 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 172 transitions. [2021-10-21 19:59:39,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 19:59:39,833 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:39,833 INFO L512 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] [2021-10-21 19:59:39,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:40,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:40,057 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:40,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:40,057 INFO L82 PathProgramCache]: Analyzing trace with hash 151041369, now seen corresponding path program 1 times [2021-10-21 19:59:40,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:40,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272403446] [2021-10-21 19:59:40,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:40,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:40,080 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:59:40,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003202807] [2021-10-21 19:59:40,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:40,084 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:40,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:40,086 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:40,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 19:59:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:40,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 19:59:40,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:40,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:40,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:40,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272403446] [2021-10-21 19:59:40,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:59:40,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003202807] [2021-10-21 19:59:40,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003202807] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:59:40,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:59:40,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-21 19:59:40,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684215074] [2021-10-21 19:59:40,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:59:40,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:40,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:59:40,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:59:40,593 INFO L87 Difference]: Start difference. First operand 141 states and 172 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:40,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:40,848 INFO L93 Difference]: Finished difference Result 254 states and 297 transitions. [2021-10-21 19:59:40,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:59:40,849 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-21 19:59:40,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:40,851 INFO L225 Difference]: With dead ends: 254 [2021-10-21 19:59:40,851 INFO L226 Difference]: Without dead ends: 252 [2021-10-21 19:59:40,851 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 135.5ms TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:59:40,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-21 19:59:40,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 175. [2021-10-21 19:59:40,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 170 states have (on average 1.2588235294117647) internal successors, (214), 174 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:40,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 214 transitions. [2021-10-21 19:59:40,882 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 214 transitions. Word has length 26 [2021-10-21 19:59:40,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:40,882 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 214 transitions. [2021-10-21 19:59:40,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:40,883 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 214 transitions. [2021-10-21 19:59:40,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-21 19:59:40,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:40,884 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:59:40,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:41,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:41,100 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:41,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:41,100 INFO L82 PathProgramCache]: Analyzing trace with hash -74821968, now seen corresponding path program 2 times [2021-10-21 19:59:41,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:41,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398211616] [2021-10-21 19:59:41,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:41,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:41,115 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:59:41,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549470573] [2021-10-21 19:59:41,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:59:41,116 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:41,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:41,117 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:41,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 19:59:41,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:59:41,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:59:41,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:59:41,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:41,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:41,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398211616] [2021-10-21 19:59:41,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:59:41,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549470573] [2021-10-21 19:59:41,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549470573] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:41,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:41,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:59:41,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985438122] [2021-10-21 19:59:41,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:59:41,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:41,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:59:41,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:59:41,461 INFO L87 Difference]: Start difference. First operand 175 states and 214 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:41,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:41,571 INFO L93 Difference]: Finished difference Result 249 states and 298 transitions. [2021-10-21 19:59:41,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:59:41,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-21 19:59:41,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:41,576 INFO L225 Difference]: With dead ends: 249 [2021-10-21 19:59:41,576 INFO L226 Difference]: Without dead ends: 167 [2021-10-21 19:59:41,578 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 22.4ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:59:41,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-10-21 19:59:41,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 93. [2021-10-21 19:59:41,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.2045454545454546) internal successors, (106), 92 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:41,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2021-10-21 19:59:41,594 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 27 [2021-10-21 19:59:41,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:41,595 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2021-10-21 19:59:41,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:41,595 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2021-10-21 19:59:41,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 19:59:41,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:41,605 INFO L512 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] [2021-10-21 19:59:41,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:41,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:41,821 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:41,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:41,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1112899551, now seen corresponding path program 1 times [2021-10-21 19:59:41,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:41,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423504475] [2021-10-21 19:59:41,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:41,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:41,837 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:59:41,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804146450] [2021-10-21 19:59:41,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:41,837 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:41,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:41,838 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:41,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-21 19:59:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:42,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-21 19:59:42,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:42,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:42,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:42,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423504475] [2021-10-21 19:59:42,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:59:42,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804146450] [2021-10-21 19:59:42,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804146450] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:59:42,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:59:42,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-21 19:59:42,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036564037] [2021-10-21 19:59:42,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:59:42,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:42,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:59:42,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:59:42,968 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:43,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:43,493 INFO L93 Difference]: Finished difference Result 204 states and 230 transitions. [2021-10-21 19:59:43,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:59:43,493 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-21 19:59:43,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:43,495 INFO L225 Difference]: With dead ends: 204 [2021-10-21 19:59:43,495 INFO L226 Difference]: Without dead ends: 194 [2021-10-21 19:59:43,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 281.1ms TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:59:43,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-21 19:59:43,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 110. [2021-10-21 19:59:43,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.1904761904761905) internal successors, (125), 109 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:43,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2021-10-21 19:59:43,521 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 32 [2021-10-21 19:59:43,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:43,522 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2021-10-21 19:59:43,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:43,522 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2021-10-21 19:59:43,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 19:59:43,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:43,523 INFO L512 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] [2021-10-21 19:59:43,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:43,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:43,737 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:43,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:43,737 INFO L82 PathProgramCache]: Analyzing trace with hash -986732336, now seen corresponding path program 1 times [2021-10-21 19:59:43,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:43,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980835030] [2021-10-21 19:59:43,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:43,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:43,761 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:59:43,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468415998] [2021-10-21 19:59:43,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:43,772 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:43,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:43,773 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:43,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-21 19:59:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:44,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-21 19:59:44,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:44,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:44,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:44,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980835030] [2021-10-21 19:59:44,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:59:44,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468415998] [2021-10-21 19:59:44,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468415998] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:59:44,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:59:44,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-21 19:59:44,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238177358] [2021-10-21 19:59:44,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 19:59:44,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:44,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:59:44,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:59:44,970 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:45,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:45,543 INFO L93 Difference]: Finished difference Result 232 states and 268 transitions. [2021-10-21 19:59:45,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:59:45,543 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-21 19:59:45,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:45,545 INFO L225 Difference]: With dead ends: 232 [2021-10-21 19:59:45,545 INFO L226 Difference]: Without dead ends: 166 [2021-10-21 19:59:45,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 487.6ms TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2021-10-21 19:59:45,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-21 19:59:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 146. [2021-10-21 19:59:45,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 141 states have (on average 1.177304964539007) internal successors, (166), 145 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:45,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 166 transitions. [2021-10-21 19:59:45,578 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 166 transitions. Word has length 32 [2021-10-21 19:59:45,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:45,578 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 166 transitions. [2021-10-21 19:59:45,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:45,578 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 166 transitions. [2021-10-21 19:59:45,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 19:59:45,579 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:45,579 INFO L512 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] [2021-10-21 19:59:45,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:45,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-21 19:59:45,793 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:45,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:45,793 INFO L82 PathProgramCache]: Analyzing trace with hash -315127458, now seen corresponding path program 2 times [2021-10-21 19:59:45,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:45,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302342047] [2021-10-21 19:59:45,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:45,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:45,813 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:59:45,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887442004] [2021-10-21 19:59:45,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:59:45,828 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:45,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:45,829 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:45,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-21 19:59:46,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:59:46,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:59:46,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:59:46,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:46,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:46,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302342047] [2021-10-21 19:59:46,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:59:46,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887442004] [2021-10-21 19:59:46,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887442004] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:59:46,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:59:46,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-21 19:59:46,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750874103] [2021-10-21 19:59:46,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:59:46,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:46,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:59:46,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:59:46,312 INFO L87 Difference]: Start difference. First operand 146 states and 166 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:46,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:46,678 INFO L93 Difference]: Finished difference Result 326 states and 371 transitions. [2021-10-21 19:59:46,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:59:46,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-21 19:59:46,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:46,681 INFO L225 Difference]: With dead ends: 326 [2021-10-21 19:59:46,681 INFO L226 Difference]: Without dead ends: 322 [2021-10-21 19:59:46,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 149.7ms TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:59:46,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-10-21 19:59:46,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 174. [2021-10-21 19:59:46,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 1.2011834319526626) internal successors, (203), 173 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:46,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 203 transitions. [2021-10-21 19:59:46,722 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 203 transitions. Word has length 37 [2021-10-21 19:59:46,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:46,722 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 203 transitions. [2021-10-21 19:59:46,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:46,723 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 203 transitions. [2021-10-21 19:59:46,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 19:59:46,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:46,724 INFO L512 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] [2021-10-21 19:59:46,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:46,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-21 19:59:46,943 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:46,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:46,944 INFO L82 PathProgramCache]: Analyzing trace with hash -188960243, now seen corresponding path program 1 times [2021-10-21 19:59:46,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:46,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799186496] [2021-10-21 19:59:46,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:46,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:46,953 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:59:46,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54387667] [2021-10-21 19:59:46,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:46,953 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:46,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:46,954 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:46,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-21 19:59:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:47,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 19:59:47,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:48,054 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:48,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:48,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799186496] [2021-10-21 19:59:48,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:59:48,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54387667] [2021-10-21 19:59:48,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54387667] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:59:48,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:59:48,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-21 19:59:48,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523725668] [2021-10-21 19:59:48,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 19:59:48,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:48,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 19:59:48,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:59:48,058 INFO L87 Difference]: Start difference. First operand 174 states and 203 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:48,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:48,978 INFO L93 Difference]: Finished difference Result 260 states and 298 transitions. [2021-10-21 19:59:48,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-21 19:59:48,979 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-21 19:59:48,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:48,981 INFO L225 Difference]: With dead ends: 260 [2021-10-21 19:59:48,981 INFO L226 Difference]: Without dead ends: 258 [2021-10-21 19:59:48,982 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 695.0ms TimeCoverageRelationStatistics Valid=219, Invalid=837, Unknown=0, NotChecked=0, Total=1056 [2021-10-21 19:59:48,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-10-21 19:59:49,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 214. [2021-10-21 19:59:49,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 209 states have (on average 1.200956937799043) internal successors, (251), 213 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:49,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 251 transitions. [2021-10-21 19:59:49,043 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 251 transitions. Word has length 37 [2021-10-21 19:59:49,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:49,044 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 251 transitions. [2021-10-21 19:59:49,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:49,044 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 251 transitions. [2021-10-21 19:59:49,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-21 19:59:49,045 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:49,046 INFO L512 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] [2021-10-21 19:59:49,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-10-21 19:59:49,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-21 19:59:49,261 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:49,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:49,261 INFO L82 PathProgramCache]: Analyzing trace with hash 913672398, now seen corresponding path program 1 times [2021-10-21 19:59:49,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:49,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417374365] [2021-10-21 19:59:49,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:49,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:49,275 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:59:49,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20615884] [2021-10-21 19:59:49,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:49,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:49,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:49,293 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:49,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-21 19:59:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:49,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:59:49,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:59:49,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:49,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417374365] [2021-10-21 19:59:49,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:59:49,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20615884] [2021-10-21 19:59:49,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20615884] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:49,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:49,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:59:49,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786858631] [2021-10-21 19:59:49,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:59:49,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:49,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:59:49,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:59:49,868 INFO L87 Difference]: Start difference. First operand 214 states and 251 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:49,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:49,971 INFO L93 Difference]: Finished difference Result 363 states and 429 transitions. [2021-10-21 19:59:49,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:59:49,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-21 19:59:49,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:49,975 INFO L225 Difference]: With dead ends: 363 [2021-10-21 19:59:49,975 INFO L226 Difference]: Without dead ends: 226 [2021-10-21 19:59:49,979 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:59:49,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-21 19:59:50,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 204. [2021-10-21 19:59:50,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.1959798994974875) internal successors, (238), 203 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:50,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 238 transitions. [2021-10-21 19:59:50,030 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 238 transitions. Word has length 38 [2021-10-21 19:59:50,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:50,031 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 238 transitions. [2021-10-21 19:59:50,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:50,031 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 238 transitions. [2021-10-21 19:59:50,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-21 19:59:50,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:50,032 INFO L512 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] [2021-10-21 19:59:50,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:50,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-21 19:59:50,249 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:50,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:50,250 INFO L82 PathProgramCache]: Analyzing trace with hash 820532868, now seen corresponding path program 2 times [2021-10-21 19:59:50,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:50,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282586446] [2021-10-21 19:59:50,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:50,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:50,275 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:59:50,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [848756680] [2021-10-21 19:59:50,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:59:50,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:50,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:50,277 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:50,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-21 19:59:50,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-21 19:59:50,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:59:50,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:59:50,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:50,899 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:59:50,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:50,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282586446] [2021-10-21 19:59:50,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:59:50,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848756680] [2021-10-21 19:59:50,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848756680] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:50,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:50,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:59:50,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944948005] [2021-10-21 19:59:50,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:59:50,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:50,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:59:50,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:59:50,908 INFO L87 Difference]: Start difference. First operand 204 states and 238 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:51,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:51,008 INFO L93 Difference]: Finished difference Result 237 states and 275 transitions. [2021-10-21 19:59:51,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:59:51,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-21 19:59:51,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:51,011 INFO L225 Difference]: With dead ends: 237 [2021-10-21 19:59:51,011 INFO L226 Difference]: Without dead ends: 235 [2021-10-21 19:59:51,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:59:51,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-10-21 19:59:51,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 222. [2021-10-21 19:59:51,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 217 states have (on average 1.1981566820276497) internal successors, (260), 221 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:51,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 260 transitions. [2021-10-21 19:59:51,079 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 260 transitions. Word has length 38 [2021-10-21 19:59:51,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:51,080 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 260 transitions. [2021-10-21 19:59:51,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:51,080 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 260 transitions. [2021-10-21 19:59:51,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-21 19:59:51,081 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:51,081 INFO L512 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] [2021-10-21 19:59:51,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:51,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:51,296 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:51,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:51,296 INFO L82 PathProgramCache]: Analyzing trace with hash 2091903451, now seen corresponding path program 1 times [2021-10-21 19:59:51,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:51,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995746553] [2021-10-21 19:59:51,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:51,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:51,310 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:59:51,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896023115] [2021-10-21 19:59:51,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:51,310 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:51,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:51,312 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:51,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-21 19:59:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:51,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:59:51,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:51,980 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 19:59:51,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:51,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995746553] [2021-10-21 19:59:51,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:59:51,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896023115] [2021-10-21 19:59:51,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896023115] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:51,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:51,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-21 19:59:51,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139716251] [2021-10-21 19:59:51,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:59:51,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:51,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:59:51,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:59:51,983 INFO L87 Difference]: Start difference. First operand 222 states and 260 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:52,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:52,253 INFO L93 Difference]: Finished difference Result 300 states and 345 transitions. [2021-10-21 19:59:52,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:59:52,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-21 19:59:52,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:52,255 INFO L225 Difference]: With dead ends: 300 [2021-10-21 19:59:52,255 INFO L226 Difference]: Without dead ends: 235 [2021-10-21 19:59:52,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 144.3ms TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:59:52,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-10-21 19:59:52,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 216. [2021-10-21 19:59:52,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 211 states have (on average 1.1895734597156398) internal successors, (251), 215 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:52,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 251 transitions. [2021-10-21 19:59:52,302 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 251 transitions. Word has length 39 [2021-10-21 19:59:52,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:52,303 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 251 transitions. [2021-10-21 19:59:52,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:52,303 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 251 transitions. [2021-10-21 19:59:52,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-21 19:59:52,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:52,304 INFO L512 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] [2021-10-21 19:59:52,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:52,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-21 19:59:52,521 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:52,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:52,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1404711062, now seen corresponding path program 1 times [2021-10-21 19:59:52,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:52,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237269874] [2021-10-21 19:59:52,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:52,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:52,536 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:59:52,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1757990022] [2021-10-21 19:59:52,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:52,537 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:52,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:52,538 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:52,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-21 19:59:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:53,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 68 conjunts are in the unsatisfiable core [2021-10-21 19:59:53,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:54,611 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:54,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:54,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237269874] [2021-10-21 19:59:54,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:59:54,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757990022] [2021-10-21 19:59:54,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757990022] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:59:54,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:59:54,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-21 19:59:54,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936113795] [2021-10-21 19:59:54,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 19:59:54,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:54,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 19:59:54,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:59:54,615 INFO L87 Difference]: Start difference. First operand 216 states and 251 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:55,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:55,225 INFO L93 Difference]: Finished difference Result 312 states and 363 transitions. [2021-10-21 19:59:55,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 19:59:55,225 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-21 19:59:55,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:55,227 INFO L225 Difference]: With dead ends: 312 [2021-10-21 19:59:55,227 INFO L226 Difference]: Without dead ends: 248 [2021-10-21 19:59:55,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 465.0ms TimeCoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2021-10-21 19:59:55,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-10-21 19:59:55,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 237. [2021-10-21 19:59:55,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 232 states have (on average 1.1767241379310345) internal successors, (273), 236 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:55,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 273 transitions. [2021-10-21 19:59:55,279 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 273 transitions. Word has length 41 [2021-10-21 19:59:55,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:55,279 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 273 transitions. [2021-10-21 19:59:55,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:55,279 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 273 transitions. [2021-10-21 19:59:55,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-21 19:59:55,280 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:55,280 INFO L512 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] [2021-10-21 19:59:55,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:55,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:55,502 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:55,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:55,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1976752845, now seen corresponding path program 2 times [2021-10-21 19:59:55,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:55,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936167917] [2021-10-21 19:59:55,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:55,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:55,517 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:59:55,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092145775] [2021-10-21 19:59:55,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:59:55,524 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:55,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:55,541 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:55,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-21 19:59:56,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:59:56,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:59:56,077 WARN L261 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 96 conjunts are in the unsatisfiable core [2021-10-21 19:59:56,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:58,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:58,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936167917] [2021-10-21 19:59:58,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:59:58,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092145775] [2021-10-21 19:59:58,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092145775] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:59:58,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:59:58,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-10-21 19:59:58,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752735835] [2021-10-21 19:59:58,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-21 19:59:58,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:58,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-21 19:59:58,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:59:58,169 INFO L87 Difference]: Start difference. First operand 237 states and 273 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:59,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:59,084 INFO L93 Difference]: Finished difference Result 353 states and 405 transitions. [2021-10-21 19:59:59,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-21 19:59:59,085 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-10-21 19:59:59,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:59,087 INFO L225 Difference]: With dead ends: 353 [2021-10-21 19:59:59,088 INFO L226 Difference]: Without dead ends: 289 [2021-10-21 19:59:59,089 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 727.5ms TimeCoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2021-10-21 19:59:59,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-10-21 19:59:59,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 258. [2021-10-21 19:59:59,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 253 states have (on average 1.1699604743083003) internal successors, (296), 257 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:59,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 296 transitions. [2021-10-21 19:59:59,150 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 296 transitions. Word has length 46 [2021-10-21 19:59:59,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:59,150 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 296 transitions. [2021-10-21 19:59:59,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:59,151 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 296 transitions. [2021-10-21 19:59:59,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-21 19:59:59,151 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:59:59,152 INFO L512 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] [2021-10-21 19:59:59,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:59,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:59,361 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 19:59:59,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:59,361 INFO L82 PathProgramCache]: Analyzing trace with hash 2102920060, now seen corresponding path program 2 times [2021-10-21 19:59:59,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:59,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050201161] [2021-10-21 19:59:59,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:59,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:59,385 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:59:59,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956708296] [2021-10-21 19:59:59,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:59:59,385 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:59:59,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:59,401 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:59:59,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-21 20:00:00,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:00:00,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:00:00,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 20:00:00,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:00,531 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:00:00,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:00:00,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050201161] [2021-10-21 20:00:00,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:00:00,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956708296] [2021-10-21 20:00:00,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956708296] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:00:00,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:00:00,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-21 20:00:00,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161798311] [2021-10-21 20:00:00,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:00:00,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:00:00,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:00:00,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:00:00,534 INFO L87 Difference]: Start difference. First operand 258 states and 296 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:01,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:00:01,003 INFO L93 Difference]: Finished difference Result 420 states and 483 transitions. [2021-10-21 20:00:01,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 20:00:01,004 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-10-21 20:00:01,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:00:01,006 INFO L225 Difference]: With dead ends: 420 [2021-10-21 20:00:01,006 INFO L226 Difference]: Without dead ends: 323 [2021-10-21 20:00:01,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 290.7ms TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2021-10-21 20:00:01,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-21 20:00:01,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 191. [2021-10-21 20:00:01,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 186 states have (on average 1.1720430107526882) internal successors, (218), 190 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:01,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 218 transitions. [2021-10-21 20:00:01,054 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 218 transitions. Word has length 46 [2021-10-21 20:00:01,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:00:01,054 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 218 transitions. [2021-10-21 20:00:01,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:01,055 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 218 transitions. [2021-10-21 20:00:01,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-21 20:00:01,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:00:01,055 INFO L512 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] [2021-10-21 20:00:01,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:01,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-21 20:00:01,269 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 20:00:01,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:01,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1437779966, now seen corresponding path program 1 times [2021-10-21 20:00:01,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:01,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175157143] [2021-10-21 20:00:01,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:01,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:01,284 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:00:01,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813471648] [2021-10-21 20:00:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:01,285 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:00:01,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:01,286 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:00:01,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-21 20:00:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:01,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 20:00:01,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:02,272 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-21 20:00:02,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:00:02,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175157143] [2021-10-21 20:00:02,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:00:02,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813471648] [2021-10-21 20:00:02,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813471648] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:00:02,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:00:02,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-21 20:00:02,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807325541] [2021-10-21 20:00:02,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:00:02,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:00:02,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:00:02,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:00:02,274 INFO L87 Difference]: Start difference. First operand 191 states and 218 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:02,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:00:02,583 INFO L93 Difference]: Finished difference Result 301 states and 345 transitions. [2021-10-21 20:00:02,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 20:00:02,584 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-10-21 20:00:02,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:00:02,585 INFO L225 Difference]: With dead ends: 301 [2021-10-21 20:00:02,585 INFO L226 Difference]: Without dead ends: 135 [2021-10-21 20:00:02,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 201.7ms TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-10-21 20:00:02,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-21 20:00:02,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-10-21 20:00:02,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.1692307692307693) internal successors, (152), 134 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:02,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 152 transitions. [2021-10-21 20:00:02,635 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 152 transitions. Word has length 49 [2021-10-21 20:00:02,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:00:02,635 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 152 transitions. [2021-10-21 20:00:02,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:02,635 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 152 transitions. [2021-10-21 20:00:02,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-21 20:00:02,636 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:00:02,636 INFO L512 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] [2021-10-21 20:00:02,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-21 20:00:02,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-21 20:00:02,837 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 20:00:02,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:02,837 INFO L82 PathProgramCache]: Analyzing trace with hash -692384328, now seen corresponding path program 3 times [2021-10-21 20:00:02,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:02,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300614108] [2021-10-21 20:00:02,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:02,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:02,859 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:00:02,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [257824622] [2021-10-21 20:00:02,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:00:02,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:00:02,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:02,861 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:00:02,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-21 20:00:03,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 20:00:03,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:00:03,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 76 conjunts are in the unsatisfiable core [2021-10-21 20:00:03,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:05,084 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-21 20:00:05,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:00:05,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300614108] [2021-10-21 20:00:05,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:00:05,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257824622] [2021-10-21 20:00:05,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257824622] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:00:05,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:00:05,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-21 20:00:05,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321591361] [2021-10-21 20:00:05,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 20:00:05,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:00:05,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 20:00:05,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:00:05,087 INFO L87 Difference]: Start difference. First operand 135 states and 152 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:05,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:00:05,991 INFO L93 Difference]: Finished difference Result 203 states and 230 transitions. [2021-10-21 20:00:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 20:00:05,992 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-10-21 20:00:05,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:00:05,993 INFO L225 Difference]: With dead ends: 203 [2021-10-21 20:00:05,993 INFO L226 Difference]: Without dead ends: 195 [2021-10-21 20:00:05,994 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 538.0ms TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-10-21 20:00:05,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-10-21 20:00:06,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 173. [2021-10-21 20:00:06,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 168 states have (on average 1.1904761904761905) internal successors, (200), 172 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:06,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 200 transitions. [2021-10-21 20:00:06,033 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 200 transitions. Word has length 58 [2021-10-21 20:00:06,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:00:06,034 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 200 transitions. [2021-10-21 20:00:06,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:06,034 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 200 transitions. [2021-10-21 20:00:06,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-21 20:00:06,035 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:00:06,035 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 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] [2021-10-21 20:00:06,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:06,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-21 20:00:06,253 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 20:00:06,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:00:06,253 INFO L82 PathProgramCache]: Analyzing trace with hash -915075848, now seen corresponding path program 1 times [2021-10-21 20:00:06,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:00:06,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170140633] [2021-10-21 20:00:06,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:06,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:00:06,266 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:00:06,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560131731] [2021-10-21 20:00:06,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:00:06,267 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:00:06,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:00:06,279 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:00:06,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-21 20:00:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:00:07,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 20:00:07,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:00:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 46 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-21 20:00:07,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:00:07,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170140633] [2021-10-21 20:00:07,506 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:00:07,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560131731] [2021-10-21 20:00:07,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560131731] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:00:07,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:00:07,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-21 20:00:07,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760251028] [2021-10-21 20:00:07,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 20:00:07,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:00:07,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 20:00:07,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:00:07,508 INFO L87 Difference]: Start difference. First operand 173 states and 200 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:07,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:00:07,778 INFO L93 Difference]: Finished difference Result 173 states and 200 transitions. [2021-10-21 20:00:07,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:00:07,779 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-21 20:00:07,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:00:07,779 INFO L225 Difference]: With dead ends: 173 [2021-10-21 20:00:07,779 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:00:07,780 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 229.4ms TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-21 20:00:07,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:00:07,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:00:07,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:07,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:00:07,780 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2021-10-21 20:00:07,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:00:07,781 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:00:07,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:00:07,781 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:00:07,781 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:00:07,784 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:00:07,784 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:00:07,785 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:00:07,785 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:00:07,786 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:00:07,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-21 20:00:07,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-21 20:00:07,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:00:08,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:00:08,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:00:08,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:00:08,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:00:09,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:00:09,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:00:09,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:00:10,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:00:10,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:00:17,099 INFO L853 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse3 (<= 1 ULTIMATE.start_main_~b~0)) (.cse1 (= ULTIMATE.start_main_~p~0 1)) (.cse4 (= ULTIMATE.start_main_~r~0 0)) (.cse11 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse6 (<= ULTIMATE.start_main_~y~0 2)) (.cse14 (<= 1 ULTIMATE.start_main_~y~0)) (.cse13 (+ (* 2 ULTIMATE.start_main_~p~0) ULTIMATE.start_main_~q~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse12 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse15 (<= 0 ULTIMATE.start_main_~b~0)) (.cse7 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse8 (= ULTIMATE.start_main_~p~0 0)) (.cse2 (<= ULTIMATE.start_main_~x~0 2)) (.cse9 (= ULTIMATE.start_main_~r~0 1)) (.cse10 (= ULTIMATE.start_main_~q~0 1)) (.cse5 (<= 1 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 .cse2 (<= ULTIMATE.start_main_~b~0 2) (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse3 (= ULTIMATE.start_main_~q~0 0) .cse4 (= ULTIMATE.start_main_~s~0 1) .cse5 (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 (= ULTIMATE.start_main_~s~0 0) .cse6 .cse7 (< ULTIMATE.start_main_~c~0 2) .cse8 (<= 1 ULTIMATE.start_main_~c~0) .cse3 (< ULTIMATE.start_main_~b~0 2) .cse9 .cse10 .cse5 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (and .cse11 .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse12 .cse6 (= .cse13 0) (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 (* 2 ULTIMATE.start_main_~x~0))) (= (+ ULTIMATE.start_main_~s~0 (* 2 ULTIMATE.start_main_~r~0)) 1) .cse14 .cse4 .cse5) (and .cse11 .cse0 .cse12 .cse15 .cse6 .cse7 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~b~0 (* 2 ULTIMATE.start_main_~a~0))) .cse8 .cse2 .cse14 (= (+ ULTIMATE.start_main_~s~0 2) 0) .cse9 .cse5 (= .cse13 1)) (and .cse0 .cse12 .cse15 .cse7 (< (* 2 ULTIMATE.start_main_~b~0) 2) .cse8 (= (+ ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~r~0) 0) (<= 0 ULTIMATE.start_main_~c~0) .cse2 (< (* 2 ULTIMATE.start_main_~c~0) 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) .cse9 .cse10 .cse5))) [2021-10-21 20:00:17,100 INFO L857 garLoopResultBuilder]: For program point L35-3(lines 35 73) no Hoare annotation was computed. [2021-10-21 20:00:17,100 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:00:17,100 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:00:17,100 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (let ((.cse2 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0)) (.cse3 (= ULTIMATE.start_main_~s~0 0)) (.cse4 (<= ULTIMATE.start_main_~y~0 2)) (.cse5 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse6 (= ULTIMATE.start_main_~p~0 0)) (.cse9 (<= 1 ULTIMATE.start_main_~b~0)) (.cse11 (= ULTIMATE.start_main_~r~0 1)) (.cse12 (= ULTIMATE.start_main_~q~0 1)) (.cse14 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= ULTIMATE.start_main_~k~0 0)) (.cse21 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse22 (= ULTIMATE.start_main_~p~0 1)) (.cse23 (<= ULTIMATE.start_main_~x~0 2)) (.cse24 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse25 (<= 1 ULTIMATE.start_main_~y~0)) (.cse26 (= ULTIMATE.start_main_~q~0 0)) (.cse27 (= ULTIMATE.start_main_~r~0 0)) (.cse28 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (.cse29 (= ULTIMATE.start_main_~s~0 1)) (.cse30 (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (.cse20 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse16 (* 2 ULTIMATE.start_main_~b~0))) (let ((.cse8 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0)) (.cse10 (= ULTIMATE.start_main_~d~0 1)) (.cse15 (= ULTIMATE.start_main_~v~0 .cse16)) (.cse17 (= ULTIMATE.start_main_~d~0 2)) (.cse7 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse18 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse13 (<= 1 ULTIMATE.start_main_~x~0)) (.cse19 (or (and .cse0 .cse1 .cse2 .cse3 .cse21 .cse4 .cse5 .cse6 .cse9 .cse11 .cse12 .cse14) (and .cse0 .cse1 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 .cse27 .cse28 .cse29 .cse30 .cse20)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~y~0)) (and .cse15 (<= .cse16 ULTIMATE.start_main_~c~0) .cse17 .cse7 .cse18 .cse19 .cse20) (and .cse0 .cse1 .cse21 .cse22 .cse23 .cse8 .cse24 .cse25 .cse26 .cse18 .cse27 .cse10 .cse28 .cse29 .cse30 .cse20) (and .cse15 .cse17 .cse7 .cse18 .cse12 .cse13 .cse19)))) [2021-10-21 20:00:17,100 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:00:17,100 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (let ((.cse9 (= ULTIMATE.start_main_~p~0 1)) (.cse10 (<= ULTIMATE.start_main_~x~0 2)) (.cse12 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse13 (<= 1 ULTIMATE.start_main_~y~0)) (.cse14 (= ULTIMATE.start_main_~q~0 0)) (.cse16 (= ULTIMATE.start_main_~r~0 0)) (.cse18 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (.cse19 (= ULTIMATE.start_main_~s~0 1)) (.cse20 (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (.cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse7 (= ULTIMATE.start_main_~k~0 0)) (.cse21 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0)) (.cse22 (= ULTIMATE.start_main_~s~0 0)) (.cse8 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse24 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse25 (= ULTIMATE.start_main_~p~0 0)) (.cse26 (= ULTIMATE.start_main_~r~0 1)) (.cse27 (= ULTIMATE.start_main_~q~0 1)) (.cse28 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (.cse1 (* 2 ULTIMATE.start_main_~b~0))) (let ((.cse11 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0)) (.cse17 (= ULTIMATE.start_main_~d~0 1)) (.cse0 (= ULTIMATE.start_main_~v~0 .cse1)) (.cse23 (<= ULTIMATE.start_main_~y~0 2)) (.cse2 (= ULTIMATE.start_main_~d~0 2)) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse15 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse4 (or (and (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) .cse6 .cse7 .cse8 .cse9 .cse10 .cse12 .cse13 .cse14 .cse16 .cse18 .cse19 .cse20 .cse5) (and .cse6 .cse8 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0)) .cse9 .cse10 .cse12 .cse13 .cse14 .cse16 .cse18 .cse19 (= ULTIMATE.start_main_~k~0 1) .cse20 .cse5) (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse6 .cse7 .cse21 .cse22 .cse8 .cse24 .cse25 .cse26 .cse27 .cse28)))) (or (and .cse0 (<= .cse1 ULTIMATE.start_main_~c~0) .cse2 .cse3 .cse4 .cse5) (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse5) (and .cse6 .cse7 .cse21 .cse22 .cse23 .cse24 .cse25 .cse3 .cse11 (<= 1 ULTIMATE.start_main_~b~0) .cse15 .cse17 .cse26 .cse27 (<= 1 ULTIMATE.start_main_~x~0) .cse28) (and .cse0 .cse23 .cse2 .cse3 .cse15 .cse27 .cse4 (<= 1 (div ULTIMATE.start_main_~v~0 2)))))) [2021-10-21 20:00:17,101 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:00:17,101 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-10-21 20:00:17,101 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 10 16) the Hoare annotation is: (let ((.cse3 (* 2 ULTIMATE.start_main_~b~0))) (let ((.cse5 (= ULTIMATE.start_main_~p~0 1)) (.cse6 (<= ULTIMATE.start_main_~x~0 2)) (.cse8 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse9 (<= 1 ULTIMATE.start_main_~y~0)) (.cse10 (= ULTIMATE.start_main_~q~0 0)) (.cse11 (= ULTIMATE.start_main_~r~0 0)) (.cse12 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (.cse13 (= ULTIMATE.start_main_~s~0 1)) (.cse14 (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (.cse15 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse2 (= ULTIMATE.start_main_~v~0 .cse3)) (.cse4 (= ULTIMATE.start_main_~d~0 2)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= ULTIMATE.start_main_~k~0 0)) (.cse19 (= ULTIMATE.start_main_~s~0 0)) (.cse20 (<= ULTIMATE.start_main_~y~0 2)) (.cse21 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse22 (= ULTIMATE.start_main_~p~0 0)) (.cse7 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse16 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0)) (.cse17 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse18 (= ULTIMATE.start_main_~d~0 1)) (.cse23 (= ULTIMATE.start_main_~r~0 1)) (.cse24 (= ULTIMATE.start_main_~q~0 1)) (.cse25 (<= 1 ULTIMATE.start_main_~x~0)) (.cse26 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0))) (or (and (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) .cse0 .cse1 .cse2 (<= .cse3 ULTIMATE.start_main_~c~0) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) (and .cse0 .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse5 .cse6 .cse16 .cse8 .cse9 .cse10 .cse17 .cse11 .cse18 .cse12 .cse13 .cse14 .cse15) (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse0 .cse1 .cse2 .cse19 .cse20 .cse21 .cse22 .cse4 .cse7 .cse17 .cse23 .cse24 .cse25 .cse26) (and .cse0 .cse1 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse19 .cse20 .cse21 .cse22 .cse7 .cse16 (<= 1 ULTIMATE.start_main_~b~0) .cse17 .cse18 .cse23 .cse24 .cse25 .cse26)))) [2021-10-21 20:00:17,101 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:00:17,102 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 55 56) the Hoare annotation is: (let ((.cse7 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse9 (= ULTIMATE.start_main_~p~0 1)) (.cse10 (<= ULTIMATE.start_main_~x~0 2)) (.cse11 (<= 1 ULTIMATE.start_main_~y~0)) (.cse12 (= ULTIMATE.start_main_~q~0 0)) (.cse14 (= ULTIMATE.start_main_~r~0 0)) (.cse15 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (.cse16 (= ULTIMATE.start_main_~s~0 1)) (.cse17 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse20 (= ULTIMATE.start_main_~s~0 0)) (.cse21 (<= ULTIMATE.start_main_~y~0 2)) (.cse22 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse23 (= ULTIMATE.start_main_~p~0 0)) (.cse24 (= ULTIMATE.start_main_~r~0 1)) (.cse4 (= ULTIMATE.start_main_~q~0 1)) (.cse25 (<= 1 ULTIMATE.start_main_~x~0)) (.cse26 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0))) (let ((.cse18 (* 2 ULTIMATE.start_main_~b~0)) (.cse19 (or (and .cse6 .cse7 .cse9 .cse10 .cse11 .cse12 .cse14 .cse15 .cse16 .cse17) (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse6 .cse20 .cse21 .cse22 .cse23 (<= 1 ULTIMATE.start_main_~c~0) .cse24 .cse4 .cse25 .cse26))) (.cse8 (= ULTIMATE.start_main_~k~0 0)) (.cse13 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0))) (let ((.cse3 (or (and .cse19 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0)) (= ULTIMATE.start_main_~k~0 1)) (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17) (and .cse6 .cse8 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse20 .cse21 .cse22 .cse23 (<= 1 ULTIMATE.start_main_~b~0) .cse13 .cse24 .cse4 .cse25 .cse26))) (.cse5 (= ULTIMATE.start_main_~d~0 1)) (.cse0 (= ULTIMATE.start_main_~v~0 .cse18)) (.cse1 (= ULTIMATE.start_main_~d~0 2)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse2 .cse3 .cse5 (<= 1 ULTIMATE.start_main_~v~0) .cse4 (< ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0)) (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse2 (= (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~v~0) .cse11 .cse12 .cse13 .cse14 .cse5 .cse15 .cse16 .cse17) (and (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) .cse8 .cse0 (<= .cse18 ULTIMATE.start_main_~c~0) .cse19 .cse1 .cse2))))) [2021-10-21 20:00:17,102 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:00:17,102 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:00:17,102 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:00:17,102 INFO L860 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: true [2021-10-21 20:00:17,102 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:00:17,102 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:00:17,102 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:00:17,102 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:00:17,103 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:00:17,103 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:00:17,103 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:00:17,103 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-10-21 20:00:17,103 INFO L857 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-10-21 20:00:17,103 INFO L857 garLoopResultBuilder]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2021-10-21 20:00:17,103 INFO L857 garLoopResultBuilder]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2021-10-21 20:00:17,103 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:00:17,103 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:00:17,103 INFO L853 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (let ((.cse7 (= ULTIMATE.start_main_~p~0 1)) (.cse8 (<= ULTIMATE.start_main_~x~0 2)) (.cse10 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse11 (<= 1 ULTIMATE.start_main_~y~0)) (.cse12 (= ULTIMATE.start_main_~q~0 0)) (.cse14 (= ULTIMATE.start_main_~r~0 0)) (.cse16 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (.cse17 (= ULTIMATE.start_main_~s~0 1)) (.cse18 (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (.cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse5 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse6 (= ULTIMATE.start_main_~k~0 0)) (.cse19 (= ULTIMATE.start_main_~s~0 0)) (.cse20 (<= ULTIMATE.start_main_~y~0 2)) (.cse21 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse22 (= ULTIMATE.start_main_~p~0 0)) (.cse23 (<= 1 ULTIMATE.start_main_~b~0)) (.cse13 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse24 (= ULTIMATE.start_main_~r~0 1)) (.cse25 (= ULTIMATE.start_main_~q~0 1)) (.cse26 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (.cse1 (* 2 ULTIMATE.start_main_~b~0))) (let ((.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0)) (.cse15 (= ULTIMATE.start_main_~d~0 1)) (.cse0 (= ULTIMATE.start_main_~v~0 .cse1)) (.cse2 (= ULTIMATE.start_main_~d~0 2)) (.cse3 (or (and (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) .cse5 .cse6 .cse7 .cse8 .cse10 .cse11 .cse12 .cse14 .cse16 .cse17 .cse18 .cse4) (and .cse5 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0)) .cse7 .cse8 .cse10 .cse11 .cse12 .cse14 .cse16 .cse17 (= ULTIMATE.start_main_~k~0 1) .cse18 .cse4) (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse5 .cse6 .cse19 .cse20 .cse21 .cse22 .cse23 .cse13 .cse24 .cse25 .cse26)))) (or (and .cse0 (<= .cse1 ULTIMATE.start_main_~c~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 .cse3 .cse4) (and .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse4) (and .cse5 .cse6 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse19 .cse20 .cse21 .cse22 .cse9 .cse23 .cse13 .cse15 .cse24 .cse25 (<= 1 ULTIMATE.start_main_~x~0) .cse26) (and .cse0 .cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 .cse25)))) [2021-10-21 20:00:17,103 INFO L857 garLoopResultBuilder]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2021-10-21 20:00:17,104 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-10-21 20:00:17,104 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-10-21 20:00:17,104 INFO L857 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2021-10-21 20:00:17,104 INFO L857 garLoopResultBuilder]: For program point L8-6(line 8) no Hoare annotation was computed. [2021-10-21 20:00:17,104 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:00:17,104 INFO L860 garLoopResultBuilder]: At program point L75(lines 18 76) the Hoare annotation is: true [2021-10-21 20:00:17,104 INFO L853 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse12 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse0 (<= ULTIMATE.start_main_~x~0 2))) (let ((.cse25 (= ULTIMATE.start_main_~s~0 0)) (.cse14 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse15 (= ULTIMATE.start_main_~p~0 0)) (.cse16 (= ULTIMATE.start_main_~r~0 1)) (.cse10 (= ULTIMATE.start_main_~q~0 1)) (.cse26 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (.cse20 (let ((.cse27 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse28 (= ULTIMATE.start_main_~p~0 1)) (.cse29 (<= 1 ULTIMATE.start_main_~y~0)) (.cse30 (= ULTIMATE.start_main_~r~0 0))) (or (and .cse12 .cse27 .cse28 .cse0 .cse29 (<= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse30) (and .cse12 .cse27 .cse28 .cse0 .cse29 .cse30 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0))))) (.cse13 (<= ULTIMATE.start_main_~y~0 2)) (.cse21 (= ULTIMATE.start_main_~q~0 0)) (.cse23 (= ULTIMATE.start_main_~s~0 1)) (.cse17 (<= 1 ULTIMATE.start_main_~x~0)) (.cse24 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (let ((.cse11 (and .cse20 .cse13 .cse21 .cse23 .cse17 .cse24)) (.cse18 (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse12 .cse25 .cse13 .cse14 .cse15 .cse16 .cse10 .cse17 .cse26)) (.cse7 (<= 0 ULTIMATE.start_main_~c~0)) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (= (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~v~0)) (.cse19 (< (* 2 ULTIMATE.start_main_~c~0) 2)) (.cse5 (= ULTIMATE.start_main_~d~0 1)) (.cse22 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0))) (or (and .cse0 (let ((.cse1 (* 2 ULTIMATE.start_main_~b~0))) (let ((.cse6 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse8 (+ ULTIMATE.start_main_~c~0 .cse1)) (.cse9 (= ULTIMATE.start_main_~k~0 2)) (.cse2 (or .cse11 (and (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse12 .cse13 .cse14 .cse15 (= (+ ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~r~0) 0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) .cse16 .cse10 .cse17) .cse18))) (or (and (or (and (= ULTIMATE.start_main_~v~0 .cse1) (= ULTIMATE.start_main_~d~0 2) .cse2) (and .cse3 .cse4 .cse2 .cse5)) .cse6 .cse7 (= ULTIMATE.start_main_~x~0 .cse8) .cse9) (and .cse6 (= ULTIMATE.start_main_~y~0 .cse8) .cse9 .cse2 .cse10 (<= 1 (div ULTIMATE.start_main_~v~0 2)))))) .cse19) (and .cse20 (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~b~0 2) .cse21 .cse22 .cse23 .cse17 .cse24) (and (or .cse11 .cse18) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0)) .cse7 .cse3 .cse4 .cse19 .cse5 (= ULTIMATE.start_main_~k~0 1) .cse24) (and .cse12 .cse25 .cse13 .cse14 .cse15 (<= 1 ULTIMATE.start_main_~b~0) .cse22 (< ULTIMATE.start_main_~b~0 2) .cse16 .cse10 .cse17 .cse26 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~y~0)))))) [2021-10-21 20:00:17,104 INFO L857 garLoopResultBuilder]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2021-10-21 20:00:17,104 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:00:17,104 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2021-10-21 20:00:17,108 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:00:17,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:00:17 BoogieIcfgContainer [2021-10-21 20:00:17,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:00:17,190 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:00:17,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:00:17,190 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:00:17,190 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:59:30" (3/4) ... [2021-10-21 20:00:17,194 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:00:17,221 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-21 20:00:17,221 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:00:17,221 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:00:17,222 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:00:17,314 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:00:17,314 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:00:17,316 INFO L168 Benchmark]: Toolchain (without parser) took 47895.07 ms. Allocated memory was 94.4 MB in the beginning and 283.1 MB in the end (delta: 188.7 MB). Free memory was 63.9 MB in the beginning and 74.5 MB in the end (delta: -10.6 MB). Peak memory consumption was 177.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:17,318 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 94.4 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:00:17,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.75 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 63.7 MB in the beginning and 106.0 MB in the end (delta: -42.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:17,320 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.75 ms. Allocated memory is still 130.0 MB. Free memory was 105.9 MB in the beginning and 103.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:17,321 INFO L168 Benchmark]: Boogie Preprocessor took 30.40 ms. Allocated memory is still 130.0 MB. Free memory was 103.9 MB in the beginning and 102.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:00:17,321 INFO L168 Benchmark]: RCFGBuilder took 443.88 ms. Allocated memory is still 130.0 MB. Free memory was 102.8 MB in the beginning and 91.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:17,322 INFO L168 Benchmark]: TraceAbstraction took 46910.97 ms. Allocated memory was 130.0 MB in the beginning and 283.1 MB in the end (delta: 153.1 MB). Free memory was 90.8 MB in the beginning and 79.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 200.9 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:17,322 INFO L168 Benchmark]: Witness Printer took 125.08 ms. Allocated memory is still 283.1 MB. Free memory was 79.7 MB in the beginning and 74.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:00:17,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 94.4 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.75 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 63.7 MB in the beginning and 106.0 MB in the end (delta: -42.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.75 ms. Allocated memory is still 130.0 MB. Free memory was 105.9 MB in the beginning and 103.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.40 ms. Allocated memory is still 130.0 MB. Free memory was 103.9 MB in the beginning and 102.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 443.88 ms. Allocated memory is still 130.0 MB. Free memory was 102.8 MB in the beginning and 91.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 46910.97 ms. Allocated memory was 130.0 MB in the beginning and 283.1 MB in the end (delta: 153.1 MB). Free memory was 90.8 MB in the beginning and 79.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 200.9 MB. Max. memory is 16.1 GB. * Witness Printer took 125.08 ms. Allocated memory is still 283.1 MB. Free memory was 79.7 MB in the beginning and 74.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 46756.7ms, OverallIterations: 24, TraceHistogramMax: 5, EmptinessCheckTime: 61.9ms, AutomataDifference: 9406.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 9101.9ms, InitialAbstractionConstructionTime: 14.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 833 SDtfs, 3165 SDslu, 3325 SDs, 0 SdLazy, 4323 SolverSat, 517 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3342.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 927 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 347 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 6275.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=20, InterpolantAutomatonStates: 286, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 804.6ms AutomataMinimizationTime, 24 MinimizatonAttempts, 915 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 51 NumberOfFragments, 2670 HoareAnnotationTreeSize, 9 FomulaSimplifications, 432681 FormulaSimplificationTreeSizeReduction, 2629.1ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 91743 FormulaSimplificationTreeSizeReductionInter, 6460.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 182.0ms SsaConstructionTime, 588.9ms SatisfiabilityAnalysisTime, 13273.2ms InterpolantComputationTime, 783 NumberOfCodeBlocks, 745 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 759 ConstructedInterpolants, 0 QuantifiedInterpolants, 8070 SizeOfPredicates, 247 NumberOfNonLiveVariables, 3131 ConjunctsInSsa, 608 ConjunctsInUnsatCore, 24 InterpolantComputations, 10 PerfectInterpolantSequences, 199/324 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((v == 2 * b && 2 * b <= c) && d == 2) && 1 == cond) && (((((((((((((((c == x && cond == 1) && k == 0) && 1 <= cond) && p == 1) && x <= 2) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && x <= a) && b == y) || (((((((((((((cond == 1 && 1 <= cond) && x == c + b) && p == 1) && x <= 2) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && k == 1) && x <= a) && b == y)) || ((((((((((b == x && cond == 1) && k == 0) && b < c) && s == 0) && 1 <= cond) && a == y) && p == 0) && r == 1) && q == 1) && x < a))) && b == y) || (((((((((((((((cond == 1 && k == 0) && 1 <= cond) && p == 1) && x <= 2) && b == v) && a <= x) && 1 <= y) && q == 0) && c == a) && r == 0) && d == 1) && y <= a) && s == 1) && x <= a) && b == y)) || (((((((((((((((cond == 1 && k == 0) && b < c) && s == 0) && y <= 2) && a == y) && p == 0) && 1 == cond) && b == v) && 1 <= b) && c == a) && d == 1) && r == 1) && q == 1) && 1 <= x) && x < a)) || (((((((v == 2 * b && y <= 2) && d == 2) && 1 == cond) && c == a) && q == 1) && (((((((((((((((c == x && cond == 1) && k == 0) && 1 <= cond) && p == 1) && x <= 2) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && x <= a) && b == y) || (((((((((((((cond == 1 && 1 <= cond) && x == c + b) && p == 1) && x <= 2) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && k == 1) && x <= a) && b == y)) || ((((((((((b == x && cond == 1) && k == 0) && b < c) && s == 0) && 1 <= cond) && a == y) && p == 0) && r == 1) && q == 1) && x < a))) && 1 <= v / 2) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: ((((x <= 2 && ((((((((v == 2 * b && d == 2) && ((((((((((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && c <= a) && r == 0) || ((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && r == 0) && y <= a)) && y <= 2) && q == 0) && s == 1) && 1 <= x) && b == y) || (((((((((b < a && cond == 1) && y <= 2) && a == y) && p == 0) && s + r == 0) && x == b + a) && r == 1) && q == 1) && 1 <= x)) || (((((((((b == x && cond == 1) && s == 0) && y <= 2) && a == y) && p == 0) && r == 1) && q == 1) && 1 <= x) && x < a))) || (((1 == cond && d * b == v) && ((((((((((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && c <= a) && r == 0) || ((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && r == 0) && y <= a)) && y <= 2) && q == 0) && s == 1) && 1 <= x) && b == y) || (((((((((b < a && cond == 1) && y <= 2) && a == y) && p == 0) && s + r == 0) && x == b + a) && r == 1) && q == 1) && 1 <= x)) || (((((((((b == x && cond == 1) && s == 0) && y <= 2) && a == y) && p == 0) && r == 1) && q == 1) && 1 <= x) && x < a))) && d == 1)) && 1 <= cond) && 0 <= c) && x == c + 2 * b) && k == 2) || (((((1 <= cond && y == c + 2 * b) && k == 2) && ((((((((((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && c <= a) && r == 0) || ((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && r == 0) && y <= a)) && y <= 2) && q == 0) && s == 1) && 1 <= x) && b == y) || (((((((((b < a && cond == 1) && y <= 2) && a == y) && p == 0) && s + r == 0) && x == b + a) && r == 1) && q == 1) && 1 <= x)) || (((((((((b == x && cond == 1) && s == 0) && y <= 2) && a == y) && p == 0) && r == 1) && q == 1) && 1 <= x) && x < a))) && q == 1) && 1 <= v / 2))) && 2 * c < 2) || ((((((((((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && c <= a) && r == 0) || ((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && r == 0) && y <= a)) && k == 0) && b <= 2) && q == 0) && c == a) && s == 1) && 1 <= x) && b == y)) || (((((((((((((((((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && c <= a) && r == 0) || ((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && r == 0) && y <= a)) && y <= 2) && q == 0) && s == 1) && 1 <= x) && b == y) || (((((((((b == x && cond == 1) && s == 0) && y <= 2) && a == y) && p == 0) && r == 1) && q == 1) && 1 <= x) && x < a)) && x == c + b) && 0 <= c) && 1 == cond) && d * b == v) && 2 * c < 2) && d == 1) && k == 1) && b == y)) || ((((((((((((cond == 1 && s == 0) && y <= 2) && a == y) && p == 0) && 1 <= b) && c == a) && b < 2) && r == 1) && q == 1) && 1 <= x) && x < a) && c + b * k == y) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((((((v == 2 * b && 2 * b <= c) && 1 <= cond) && d == 2) && ((((((((((((((c == x && cond == 1) && k == 0) && p == 1) && x <= 2) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && x <= a) && b == y) || ((((((((((((cond == 1 && x == c + b) && p == 1) && x <= 2) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && k == 1) && x <= a) && b == y)) || (((((((((((b == x && cond == 1) && k == 0) && s == 0) && y <= 2) && a == y) && p == 0) && 1 <= b) && c == a) && r == 1) && q == 1) && x < a))) && b == y) || ((((((((((((((cond == 1 && k == 0) && p == 1) && x <= 2) && b == v) && a <= x) && 1 <= y) && q == 0) && c == a) && r == 0) && d == 1) && y <= a) && s == 1) && x <= a) && b == y)) || ((((((((((((((cond == 1 && k == 0) && b < c) && s == 0) && y <= 2) && a == y) && p == 0) && b == v) && 1 <= b) && c == a) && d == 1) && r == 1) && q == 1) && 1 <= x) && x < a)) || ((((v == 2 * b && d == 2) && 1 == cond) && ((((((((((((((c == x && cond == 1) && k == 0) && p == 1) && x <= 2) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && x <= a) && b == y) || ((((((((((((cond == 1 && x == c + b) && p == 1) && x <= 2) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && k == 1) && x <= a) && b == y)) || (((((((((((b == x && cond == 1) && k == 0) && s == 0) && y <= 2) && a == y) && p == 0) && 1 <= b) && c == a) && r == 1) && q == 1) && x < a))) && q == 1) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((((((((((c == x && cond == 1) && k == 0) && v == 2 * b) && 2 * b <= c) && d == 2) && p == 1) && x <= 2) && 1 == cond) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && x <= a) && b == y) || (((((((((((((((cond == 1 && k == 0) && 1 <= cond) && p == 1) && x <= 2) && b == v) && a <= x) && 1 <= y) && q == 0) && c == a) && r == 0) && d == 1) && y <= a) && s == 1) && x <= a) && b == y)) || ((((((((((((((b == x && cond == 1) && k == 0) && v == 2 * b) && s == 0) && y <= 2) && a == y) && p == 0) && d == 2) && 1 == cond) && c == a) && r == 1) && q == 1) && 1 <= x) && x < a)) || (((((((((((((((cond == 1 && k == 0) && b < c) && s == 0) && y <= 2) && a == y) && p == 0) && 1 == cond) && b == v) && 1 <= b) && c == a) && d == 1) && r == 1) && q == 1) && 1 <= x) && x < a) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((((cond == 1 && p == 1) && x <= 2) && b <= 2) && a <= x) && 1 <= b) && q == 0) && r == 0) && s == 1) && 1 <= x) && x <= a) && b == y) || ((((((((((((cond == 1 && s == 0) && y <= 2) && a == y) && c < 2) && p == 0) && 1 <= c) && 1 <= b) && b < 2) && r == 1) && q == 1) && 1 <= x) && x < a)) || (((((((((((((b < a && cond == 1) && a == x) && 1 <= cond) && y <= 2) && 2 * p + q == 0) && x < y) && p == 1) && x <= 2) && y == b + 2 * x) && s + 2 * r == 1) && 1 <= y) && r == 0) && 1 <= x)) || (((((((((((((b < a && cond == 1) && 1 <= cond) && 0 <= b) && y <= 2) && a == y) && x == b + 2 * a) && p == 0) && x <= 2) && 1 <= y) && s + 2 == 0) && r == 1) && 1 <= x) && 2 * p + q == 1)) || (((((((((((((cond == 1 && 1 <= cond) && 0 <= b) && a == y) && 2 * b < 2) && p == 0) && s + r == 0) && 0 <= c) && x <= 2) && 2 * c < 2) && x == b + a) && r == 1) && q == 1) && 1 <= x) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((((((v == 2 * b && d == 2) && 1 == cond) && ((((((((((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && b == y) || ((((((((((b == x && cond == 1) && s == 0) && y <= 2) && a == y) && p == 0) && 1 <= c) && r == 1) && q == 1) && 1 <= x) && x < a)) && x == c + b) && k == 1) || (((((((((((cond == 1 && a == x) && k == 0) && p == 1) && x <= 2) && 1 <= y) && q == 0) && c == a) && r == 0) && y <= a) && s == 1) && b == y)) || ((((((((((((cond == 1 && k == 0) && b < c) && s == 0) && y <= 2) && a == y) && p == 0) && 1 <= b) && c == a) && r == 1) && q == 1) && 1 <= x) && x < a))) && q == 1) || (((((1 == cond && ((((((((((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && b == y) || ((((((((((b == x && cond == 1) && s == 0) && y <= 2) && a == y) && p == 0) && 1 <= c) && r == 1) && q == 1) && 1 <= x) && x < a)) && x == c + b) && k == 1) || (((((((((((cond == 1 && a == x) && k == 0) && p == 1) && x <= 2) && 1 <= y) && q == 0) && c == a) && r == 0) && y <= a) && s == 1) && b == y)) || ((((((((((((cond == 1 && k == 0) && b < c) && s == 0) && y <= 2) && a == y) && p == 0) && 1 <= b) && c == a) && r == 1) && q == 1) && 1 <= x) && x < a))) && d == 1) && 1 <= v) && q == 1) && v < c)) || ((((((((((((((cond == 1 && a == x) && k == 0) && p == 1) && x <= 2) && 1 == cond) && d * b == v) && 1 <= y) && q == 0) && c == a) && r == 0) && d == 1) && y <= a) && s == 1) && b == y)) || ((((((c == x && k == 0) && v == 2 * b) && 2 * b <= c) && ((((((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && b == y) || ((((((((((b == x && cond == 1) && s == 0) && y <= 2) && a == y) && p == 0) && 1 <= c) && r == 1) && q == 1) && 1 <= x) && x < a))) && d == 2) && 1 == cond) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((((((((cond == 1 && k == 0) && b < c) && s == 0) && y <= 2) && a == y) && p == 0) && 1 == cond) && b == v) && 1 <= b) && d == 1) && r == 1) && q == 1) && 1 <= x) && x < a) && c + b * k == y) || ((((((v == 2 * b && 2 * b <= c) && d == 2) && 1 == cond) && c == a) && ((((((((((((cond == 1 && k == 0) && b < c) && s == 0) && 1 <= cond) && y <= 2) && a == y) && p == 0) && 1 <= b) && r == 1) && q == 1) && x < a) || ((((((((((((cond == 1 && k == 0) && 1 <= cond) && p == 1) && x <= 2) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && x <= a) && b == y))) && b == y)) || (((((((((((((((cond == 1 && k == 0) && 1 <= cond) && p == 1) && x <= 2) && b == v) && a <= x) && 1 <= y) && q == 0) && c == a) && r == 0) && d == 1) && y <= a) && s == 1) && x <= a) && b == y)) || ((((((v == 2 * b && d == 2) && 1 == cond) && c == a) && q == 1) && 1 <= x) && ((((((((((((cond == 1 && k == 0) && b < c) && s == 0) && 1 <= cond) && y <= 2) && a == y) && p == 0) && 1 <= b) && r == 1) && q == 1) && x < a) || ((((((((((((cond == 1 && k == 0) && 1 <= cond) && p == 1) && x <= 2) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && x <= a) && b == y))) RESULT: Ultimate proved your program to be correct! [2021-10-21 20:00:17,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c9c3a98-aaf1-4093-8221-9c2b9a6f4c32/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...