./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-lopstr16/break-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-lopstr16/break-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8 --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 af12e42a5d3a022d66b7920ff01dec158b3de4df470747e943653bc7f1da2cc9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 14:47:27,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:47:27,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:47:27,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:47:27,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:47:27,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:47:27,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:47:27,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:47:27,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:47:27,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:47:27,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:47:27,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:47:27,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:47:27,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:47:27,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:47:27,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:47:27,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:47:27,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:47:27,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:47:27,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:47:27,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:47:27,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:47:27,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:47:27,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:47:27,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:47:27,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:47:27,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:47:27,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:47:27,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:47:27,843 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:47:27,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:47:27,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:47:27,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:47:27,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:47:27,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:47:27,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:47:27,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:47:27,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:47:27,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:47:27,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:47:27,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:47:27,850 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 14:47:27,871 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:47:27,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:47:27,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:47:27,872 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:47:27,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:47:27,873 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:47:27,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:47:27,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:47:27,874 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:47:27,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:47:27,874 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:47:27,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:47:27,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:47:27,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:47:27,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:47:27,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:47:27,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:47:27,876 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:47:27,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:47:27,876 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:47:27,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:47:27,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:47:27,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:47:27,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:47:27,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:47:27,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:47:27,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:47:27,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:47:27,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:47:27,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:47:27,878 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:47:27,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:47:27,879 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:47:27,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:47:27,879 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:47:27,879 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af12e42a5d3a022d66b7920ff01dec158b3de4df470747e943653bc7f1da2cc9 [2022-12-13 14:47:28,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:47:28,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:47:28,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:47:28,088 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:47:28,088 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:47:28,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-lopstr16/break-2.i [2022-12-13 14:47:30,583 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:47:30,747 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:47:30,748 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/sv-benchmarks/c/array-lopstr16/break-2.i [2022-12-13 14:47:30,753 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/data/fe155e002/93b3580a11f54866ada07ce95f67a091/FLAGe29e3a408 [2022-12-13 14:47:31,153 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/data/fe155e002/93b3580a11f54866ada07ce95f67a091 [2022-12-13 14:47:31,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:47:31,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:47:31,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:47:31,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:47:31,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:47:31,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:47:31" (1/1) ... [2022-12-13 14:47:31,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b1e3626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:47:31, skipping insertion in model container [2022-12-13 14:47:31,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:47:31" (1/1) ... [2022-12-13 14:47:31,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:47:31,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:47:31,286 WARN L237 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_cba36759-13ed-4040-ac9a-7ded5d972730/sv-benchmarks/c/array-lopstr16/break-2.i[800,813] [2022-12-13 14:47:31,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:47:34,881 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:47:34,893 WARN L237 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_cba36759-13ed-4040-ac9a-7ded5d972730/sv-benchmarks/c/array-lopstr16/break-2.i[800,813] [2022-12-13 14:47:34,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:47:34,910 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:47:34,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:47:34 WrapperNode [2022-12-13 14:47:34,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:47:34,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:47:34,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:47:34,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:47:34,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:47:34" (1/1) ... [2022-12-13 14:47:34,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:47:34" (1/1) ... [2022-12-13 14:47:34,935 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2022-12-13 14:47:34,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:47:34,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:47:34,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:47:34,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:47:34,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:47:34" (1/1) ... [2022-12-13 14:47:34,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:47:34" (1/1) ... [2022-12-13 14:47:34,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:47:34" (1/1) ... [2022-12-13 14:47:34,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:47:34" (1/1) ... [2022-12-13 14:47:34,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:47:34" (1/1) ... [2022-12-13 14:47:34,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:47:34" (1/1) ... [2022-12-13 14:47:34,949 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:47:34" (1/1) ... [2022-12-13 14:47:34,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:47:34" (1/1) ... [2022-12-13 14:47:34,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:47:34,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:47:34,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:47:34,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:47:34,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:47:34" (1/1) ... [2022-12-13 14:47:34,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:47:34,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:47:34,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:47:34,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:47:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:47:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:47:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:47:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:47:34,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:47:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 14:47:35,054 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:47:35,055 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:47:35,126 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:47:35,130 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:47:35,131 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 14:47:35,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:47:35 BoogieIcfgContainer [2022-12-13 14:47:35,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:47:35,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:47:35,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:47:35,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:47:35,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:47:31" (1/3) ... [2022-12-13 14:47:35,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c317ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:47:35, skipping insertion in model container [2022-12-13 14:47:35,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:47:34" (2/3) ... [2022-12-13 14:47:35,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c317ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:47:35, skipping insertion in model container [2022-12-13 14:47:35,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:47:35" (3/3) ... [2022-12-13 14:47:35,138 INFO L112 eAbstractionObserver]: Analyzing ICFG break-2.i [2022-12-13 14:47:35,151 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:47:35,151 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 14:47:35,183 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:47:35,188 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4db9f8d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:47:35,188 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 14:47:35,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 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) [2022-12-13 14:47:35,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 14:47:35,195 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:47:35,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:47:35,196 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:47:35,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:47:35,199 INFO L85 PathProgramCache]: Analyzing trace with hash 531796522, now seen corresponding path program 1 times [2022-12-13 14:47:35,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:47:35,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925033640] [2022-12-13 14:47:35,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:47:35,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:47:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:35,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:47:35,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:47:35,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925033640] [2022-12-13 14:47:35,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925033640] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:47:35,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:47:35,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:47:35,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336887827] [2022-12-13 14:47:35,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:47:35,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 14:47:35,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:47:35,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 14:47:35,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 14:47:35,323 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:47:35,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:47:35,333 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2022-12-13 14:47:35,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 14:47:35,335 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-13 14:47:35,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:47:35,342 INFO L225 Difference]: With dead ends: 29 [2022-12-13 14:47:35,342 INFO L226 Difference]: Without dead ends: 13 [2022-12-13 14:47:35,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 14:47:35,347 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:47:35,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:47:35,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-12-13 14:47:35,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-12-13 14:47:35,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:47:35,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2022-12-13 14:47:35,368 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2022-12-13 14:47:35,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:47:35,368 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2022-12-13 14:47:35,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:47:35,368 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2022-12-13 14:47:35,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 14:47:35,368 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:47:35,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:47:35,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:47:35,369 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:47:35,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:47:35,370 INFO L85 PathProgramCache]: Analyzing trace with hash 216875861, now seen corresponding path program 1 times [2022-12-13 14:47:35,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:47:35,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331975628] [2022-12-13 14:47:35,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:47:35,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:47:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:47:35,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:47:35,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331975628] [2022-12-13 14:47:35,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331975628] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:47:35,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:47:35,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:47:35,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082337011] [2022-12-13 14:47:35,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:47:35,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:47:35,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:47:35,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:47:35,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:47:35,419 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:47:35,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:47:35,447 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2022-12-13 14:47:35,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:47:35,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-13 14:47:35,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:47:35,449 INFO L225 Difference]: With dead ends: 31 [2022-12-13 14:47:35,449 INFO L226 Difference]: Without dead ends: 23 [2022-12-13 14:47:35,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:47:35,450 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:47:35,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 15 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:47:35,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-13 14:47:35,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2022-12-13 14:47:35,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 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) [2022-12-13 14:47:35,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-12-13 14:47:35,453 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 8 [2022-12-13 14:47:35,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:47:35,454 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-12-13 14:47:35,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:47:35,454 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-12-13 14:47:35,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 14:47:35,454 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:47:35,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:47:35,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:47:35,454 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:47:35,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:47:35,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1665715163, now seen corresponding path program 1 times [2022-12-13 14:47:35,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:47:35,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68455233] [2022-12-13 14:47:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:47:35,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:47:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:47:35,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:47:35,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68455233] [2022-12-13 14:47:35,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68455233] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:47:35,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552648465] [2022-12-13 14:47:35,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:47:35,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:47:35,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:47:35,512 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:47:35,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 14:47:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:35,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:47:35,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:47:35,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:47:35,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:47:35,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:47:35,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552648465] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:47:35,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:47:35,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 14:47:35,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996254515] [2022-12-13 14:47:35,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:47:35,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:47:35,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:47:35,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:47:35,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:47:35,628 INFO L87 Difference]: Start difference. First operand 17 states and 20 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) [2022-12-13 14:47:35,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:47:35,683 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2022-12-13 14:47:35,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:47:35,684 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 11 [2022-12-13 14:47:35,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:47:35,685 INFO L225 Difference]: With dead ends: 50 [2022-12-13 14:47:35,685 INFO L226 Difference]: Without dead ends: 40 [2022-12-13 14:47:35,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:47:35,687 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 42 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:47:35,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 18 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:47:35,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-13 14:47:35,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 25. [2022-12-13 14:47:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 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) [2022-12-13 14:47:35,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-12-13 14:47:35,691 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 11 [2022-12-13 14:47:35,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:47:35,691 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-12-13 14:47:35,692 INFO L496 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) [2022-12-13 14:47:35,692 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-12-13 14:47:35,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 14:47:35,692 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:47:35,692 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:47:35,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 14:47:35,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-13 14:47:35,894 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:47:35,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:47:35,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1774448108, now seen corresponding path program 1 times [2022-12-13 14:47:35,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:47:35,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954464108] [2022-12-13 14:47:35,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:47:35,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:47:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:47:36,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:47:36,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954464108] [2022-12-13 14:47:36,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954464108] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:47:36,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285681720] [2022-12-13 14:47:36,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:47:36,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:47:36,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:47:36,206 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:47:36,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 14:47:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:36,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:47:36,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:47:36,288 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:47:36,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:47:36,331 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:47:36,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285681720] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:47:36,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:47:36,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2022-12-13 14:47:36,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843004905] [2022-12-13 14:47:36,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:47:36,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 14:47:36,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:47:36,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 14:47:36,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-12-13 14:47:36,334 INFO L87 Difference]: Start difference. First operand 25 states and 28 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) [2022-12-13 14:47:36,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:47:36,621 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2022-12-13 14:47:36,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 14:47:36,622 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 15 [2022-12-13 14:47:36,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:47:36,623 INFO L225 Difference]: With dead ends: 81 [2022-12-13 14:47:36,623 INFO L226 Difference]: Without dead ends: 66 [2022-12-13 14:47:36,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=269, Invalid=723, Unknown=0, NotChecked=0, Total=992 [2022-12-13 14:47:36,625 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 159 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:47:36,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 49 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:47:36,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-12-13 14:47:36,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2022-12-13 14:47:36,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.125) internal successors, (63), 56 states have internal predecessors, (63), 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) [2022-12-13 14:47:36,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2022-12-13 14:47:36,632 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 15 [2022-12-13 14:47:36,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:47:36,633 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2022-12-13 14:47:36,633 INFO L496 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) [2022-12-13 14:47:36,633 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2022-12-13 14:47:36,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 14:47:36,633 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:47:36,634 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:47:36,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 14:47:36,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:47:36,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:47:36,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:47:36,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1157744319, now seen corresponding path program 1 times [2022-12-13 14:47:36,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:47:36,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146602030] [2022-12-13 14:47:36,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:47:36,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:47:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:37,152 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:47:37,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:47:37,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146602030] [2022-12-13 14:47:37,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146602030] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:47:37,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500143595] [2022-12-13 14:47:37,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:47:37,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:47:37,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:47:37,154 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:47:37,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 14:47:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:37,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 14:47:37,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:47:37,236 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:47:37,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:47:37,324 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:47:37,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500143595] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:47:37,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:47:37,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-12-13 14:47:37,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497167835] [2022-12-13 14:47:37,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:47:37,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 14:47:37,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:47:37,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 14:47:37,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-12-13 14:47:37,326 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 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) [2022-12-13 14:47:37,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:47:37,459 INFO L93 Difference]: Finished difference Result 181 states and 204 transitions. [2022-12-13 14:47:37,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 14:47:37,460 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 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 [2022-12-13 14:47:37,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:47:37,461 INFO L225 Difference]: With dead ends: 181 [2022-12-13 14:47:37,461 INFO L226 Difference]: Without dead ends: 146 [2022-12-13 14:47:37,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-12-13 14:47:37,463 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 274 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:47:37,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 64 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:47:37,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-12-13 14:47:37,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 121. [2022-12-13 14:47:37,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.125) internal successors, (135), 120 states have internal predecessors, (135), 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) [2022-12-13 14:47:37,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 135 transitions. [2022-12-13 14:47:37,473 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 135 transitions. Word has length 32 [2022-12-13 14:47:37,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:47:37,473 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 135 transitions. [2022-12-13 14:47:37,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 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) [2022-12-13 14:47:37,473 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 135 transitions. [2022-12-13 14:47:37,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 14:47:37,474 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:47:37,474 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:47:37,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 14:47:37,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:47:37,675 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:47:37,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:47:37,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1792167871, now seen corresponding path program 2 times [2022-12-13 14:47:37,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:47:37,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011168989] [2022-12-13 14:47:37,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:47:37,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:47:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:38,017 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:47:38,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:47:38,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011168989] [2022-12-13 14:47:38,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011168989] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:47:38,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439172573] [2022-12-13 14:47:38,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:47:38,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:47:38,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:47:38,019 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:47:38,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 14:47:38,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:47:38,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:47:38,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 14:47:38,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:47:38,144 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:47:38,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:47:38,412 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:47:38,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439172573] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:47:38,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:47:38,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2022-12-13 14:47:38,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357739682] [2022-12-13 14:47:38,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:47:38,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 14:47:38,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:47:38,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 14:47:38,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 14:47:38,416 INFO L87 Difference]: Start difference. First operand 121 states and 135 transitions. Second operand has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 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) [2022-12-13 14:47:38,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:47:38,793 INFO L93 Difference]: Finished difference Result 381 states and 428 transitions. [2022-12-13 14:47:38,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 14:47:38,794 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 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 56 [2022-12-13 14:47:38,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:47:38,796 INFO L225 Difference]: With dead ends: 381 [2022-12-13 14:47:38,796 INFO L226 Difference]: Without dead ends: 306 [2022-12-13 14:47:38,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 14:47:38,799 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 452 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:47:38,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 136 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:47:38,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-12-13 14:47:38,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 249. [2022-12-13 14:47:38,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.125) internal successors, (279), 248 states have internal predecessors, (279), 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) [2022-12-13 14:47:38,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 279 transitions. [2022-12-13 14:47:38,814 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 279 transitions. Word has length 56 [2022-12-13 14:47:38,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:47:38,814 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 279 transitions. [2022-12-13 14:47:38,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 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) [2022-12-13 14:47:38,815 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 279 transitions. [2022-12-13 14:47:38,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 14:47:38,816 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:47:38,816 INFO L195 NwaCegarLoop]: trace histogram [31, 30, 30, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:47:38,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 14:47:39,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 14:47:39,017 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:47:39,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:47:39,017 INFO L85 PathProgramCache]: Analyzing trace with hash -485334593, now seen corresponding path program 3 times [2022-12-13 14:47:39,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:47:39,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278768866] [2022-12-13 14:47:39,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:47:39,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:47:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:47:39,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:47:39,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278768866] [2022-12-13 14:47:39,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278768866] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:47:39,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739505551] [2022-12-13 14:47:39,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 14:47:39,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:47:39,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:47:39,750 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:47:39,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 14:47:47,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 31 check-sat command(s) [2022-12-13 14:47:47,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:47:47,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 14:47:47,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:47:47,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:47:47,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:47:47,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:47:47,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739505551] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:47:47,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:47:47,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 65 [2022-12-13 14:47:47,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765753802] [2022-12-13 14:47:47,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:47:47,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-12-13 14:47:47,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:47:47,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-12-13 14:47:47,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2022-12-13 14:47:47,987 INFO L87 Difference]: Start difference. First operand 249 states and 279 transitions. Second operand has 65 states, 65 states have (on average 3.0615384615384613) internal successors, (199), 65 states have internal predecessors, (199), 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) [2022-12-13 14:47:48,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:47:48,856 INFO L93 Difference]: Finished difference Result 781 states and 876 transitions. [2022-12-13 14:47:48,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-12-13 14:47:48,856 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.0615384615384613) internal successors, (199), 65 states have internal predecessors, (199), 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 104 [2022-12-13 14:47:48,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:47:48,858 INFO L225 Difference]: With dead ends: 781 [2022-12-13 14:47:48,858 INFO L226 Difference]: Without dead ends: 626 [2022-12-13 14:47:48,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2022-12-13 14:47:48,860 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1344 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:47:48,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 260 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 14:47:48,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2022-12-13 14:47:48,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 505. [2022-12-13 14:47:48,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.125) internal successors, (567), 504 states have internal predecessors, (567), 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) [2022-12-13 14:47:48,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 567 transitions. [2022-12-13 14:47:48,886 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 567 transitions. Word has length 104 [2022-12-13 14:47:48,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:47:48,886 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 567 transitions. [2022-12-13 14:47:48,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.0615384615384613) internal successors, (199), 65 states have internal predecessors, (199), 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) [2022-12-13 14:47:48,887 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 567 transitions. [2022-12-13 14:47:48,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-12-13 14:47:48,890 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:47:48,890 INFO L195 NwaCegarLoop]: trace histogram [63, 62, 62, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:47:48,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 14:47:49,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 14:47:49,091 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:47:49,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:47:49,091 INFO L85 PathProgramCache]: Analyzing trace with hash -502364737, now seen corresponding path program 4 times [2022-12-13 14:47:49,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:47:49,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488895129] [2022-12-13 14:47:49,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:47:49,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:47:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 5800 backedges. 0 proven. 5797 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:47:51,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:47:51,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488895129] [2022-12-13 14:47:51,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488895129] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:47:51,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849952385] [2022-12-13 14:47:51,055 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 14:47:51,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:47:51,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:47:51,056 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:47:51,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 14:47:51,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 14:47:51,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:47:51,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 64 conjunts are in the unsatisfiable core [2022-12-13 14:47:51,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:47:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5800 backedges. 0 proven. 5797 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:47:51,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:47:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 5800 backedges. 0 proven. 5797 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:47:54,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849952385] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:47:54,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:47:54,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 129 [2022-12-13 14:47:54,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411811989] [2022-12-13 14:47:54,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:47:54,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2022-12-13 14:47:54,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:47:54,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2022-12-13 14:47:54,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2022-12-13 14:47:54,028 INFO L87 Difference]: Start difference. First operand 505 states and 567 transitions. Second operand has 129 states, 129 states have (on average 3.0310077519379846) internal successors, (391), 129 states have internal predecessors, (391), 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) [2022-12-13 14:48:01,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:48:01,503 INFO L93 Difference]: Finished difference Result 1581 states and 1772 transitions. [2022-12-13 14:48:01,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-12-13 14:48:01,503 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 3.0310077519379846) internal successors, (391), 129 states have internal predecessors, (391), 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 200 [2022-12-13 14:48:01,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:48:01,506 INFO L225 Difference]: With dead ends: 1581 [2022-12-13 14:48:01,506 INFO L226 Difference]: Without dead ends: 1266 [2022-12-13 14:48:01,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2022-12-13 14:48:01,509 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4362 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 795 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4362 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 795 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:48:01,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4362 Valid, 518 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [795 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 14:48:01,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2022-12-13 14:48:01,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1017. [2022-12-13 14:48:01,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 1016 states have (on average 1.125) internal successors, (1143), 1016 states have internal predecessors, (1143), 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) [2022-12-13 14:48:01,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1143 transitions. [2022-12-13 14:48:01,531 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1143 transitions. Word has length 200 [2022-12-13 14:48:01,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:48:01,531 INFO L495 AbstractCegarLoop]: Abstraction has 1017 states and 1143 transitions. [2022-12-13 14:48:01,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 3.0310077519379846) internal successors, (391), 129 states have internal predecessors, (391), 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) [2022-12-13 14:48:01,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1143 transitions. [2022-12-13 14:48:01,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-12-13 14:48:01,536 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:48:01,536 INFO L195 NwaCegarLoop]: trace histogram [127, 126, 126, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:48:01,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 14:48:01,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:48:01,738 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:48:01,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:48:01,739 INFO L85 PathProgramCache]: Analyzing trace with hash -101265985, now seen corresponding path program 5 times [2022-12-13 14:48:01,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:48:01,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415637908] [2022-12-13 14:48:01,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:48:01,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:48:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:08,801 INFO L134 CoverageAnalysis]: Checked inductivity of 23880 backedges. 0 proven. 23877 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:48:08,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:48:08,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415637908] [2022-12-13 14:48:08,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415637908] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:48:08,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997377897] [2022-12-13 14:48:08,801 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 14:48:08,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:48:08,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:48:08,802 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:48:08,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba36759-13ed-4040-ac9a-7ded5d972730/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process