./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/nested3-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/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_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/nested3-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/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_0528682d-7a80-4b00-be32-9068e7dc786b/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 0397e1839c0d761fe403b06501425acc9e7bddc9f103e53ae177509d148aabf4 --- 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 21:44:51,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:44:51,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:44:51,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:44:51,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:44:51,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:44:51,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:44:51,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:44:51,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:44:51,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:44:51,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:44:51,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:44:51,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:44:51,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:44:51,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:44:51,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:44:51,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:44:51,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:44:51,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:44:51,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:44:51,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:44:51,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:44:51,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:44:51,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:44:51,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:44:51,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:44:51,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:44:51,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:44:51,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:44:51,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:44:51,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:44:51,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:44:51,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:44:51,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:44:51,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:44:51,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:44:51,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:44:51,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:44:51,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:44:51,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:44:51,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:44:51,946 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 21:44:51,967 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:44:51,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:44:51,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:44:51,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:44:51,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:44:51,968 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:44:51,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:44:51,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:44:51,969 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:44:51,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:44:51,969 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:44:51,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:44:51,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:44:51,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:44:51,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:44:51,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:44:51,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:44:51,970 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:44:51,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:44:51,970 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:44:51,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:44:51,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:44:51,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:44:51,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:44:51,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:44:51,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:44:51,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:44:51,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:44:51,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:44:51,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:44:51,972 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:44:51,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:44:51,972 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:44:51,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:44:51,972 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:44:51,972 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_0528682d-7a80-4b00-be32-9068e7dc786b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0397e1839c0d761fe403b06501425acc9e7bddc9f103e53ae177509d148aabf4 [2022-12-13 21:44:52,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:44:52,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:44:52,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:44:52,185 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:44:52,185 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:44:52,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/loops-crafted-1/nested3-2.c [2022-12-13 21:44:54,810 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:44:54,955 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:44:54,955 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/sv-benchmarks/c/loops-crafted-1/nested3-2.c [2022-12-13 21:44:54,961 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/data/f85ac9446/248e4064fb6f4c1bb82dc49ba0aa9bbd/FLAGdd868deba [2022-12-13 21:44:54,971 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/data/f85ac9446/248e4064fb6f4c1bb82dc49ba0aa9bbd [2022-12-13 21:44:54,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:44:54,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:44:54,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:44:54,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:44:54,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:44:54,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:44:54" (1/1) ... [2022-12-13 21:44:54,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d3125be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:54, skipping insertion in model container [2022-12-13 21:44:54,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:44:54" (1/1) ... [2022-12-13 21:44:54,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:44:55,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:44:55,117 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_0528682d-7a80-4b00-be32-9068e7dc786b/sv-benchmarks/c/loops-crafted-1/nested3-2.c[321,334] [2022-12-13 21:44:55,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:44:55,137 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:44:55,146 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_0528682d-7a80-4b00-be32-9068e7dc786b/sv-benchmarks/c/loops-crafted-1/nested3-2.c[321,334] [2022-12-13 21:44:55,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:44:55,159 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:44:55,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:55 WrapperNode [2022-12-13 21:44:55,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:44:55,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:44:55,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:44:55,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:44:55,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:55" (1/1) ... [2022-12-13 21:44:55,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:55" (1/1) ... [2022-12-13 21:44:55,183 INFO L138 Inliner]: procedures = 12, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-12-13 21:44:55,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:44:55,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:44:55,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:44:55,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:44:55,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:55" (1/1) ... [2022-12-13 21:44:55,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:55" (1/1) ... [2022-12-13 21:44:55,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:55" (1/1) ... [2022-12-13 21:44:55,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:55" (1/1) ... [2022-12-13 21:44:55,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:55" (1/1) ... [2022-12-13 21:44:55,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:55" (1/1) ... [2022-12-13 21:44:55,199 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:55" (1/1) ... [2022-12-13 21:44:55,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:55" (1/1) ... [2022-12-13 21:44:55,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:44:55,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:44:55,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:44:55,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:44:55,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:55" (1/1) ... [2022-12-13 21:44:55,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:44:55,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:44:55,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:44:55,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:44:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:44:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:44:55,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:44:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:44:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 21:44:55,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 21:44:55,318 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:44:55,319 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:44:55,401 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:44:55,405 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:44:55,405 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 21:44:55,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:44:55 BoogieIcfgContainer [2022-12-13 21:44:55,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:44:55,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:44:55,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:44:55,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:44:55,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:44:54" (1/3) ... [2022-12-13 21:44:55,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c7218f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:44:55, skipping insertion in model container [2022-12-13 21:44:55,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:44:55" (2/3) ... [2022-12-13 21:44:55,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c7218f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:44:55, skipping insertion in model container [2022-12-13 21:44:55,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:44:55" (3/3) ... [2022-12-13 21:44:55,413 INFO L112 eAbstractionObserver]: Analyzing ICFG nested3-2.c [2022-12-13 21:44:55,426 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:44:55,426 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 21:44:55,459 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:44:55,464 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;@7438578f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:44:55,464 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 21:44:55,466 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:44:55,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 21:44:55,471 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:44:55,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:44:55,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:44:55,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:55,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1810304921, now seen corresponding path program 1 times [2022-12-13 21:44:55,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:55,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426470907] [2022-12-13 21:44:55,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:55,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:55,649 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 21:44:55,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:55,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426470907] [2022-12-13 21:44:55,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426470907] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:55,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:55,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:44:55,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203936400] [2022-12-13 21:44:55,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:55,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:44:55,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:55,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:44:55,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:55,680 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:55,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:44:55,708 INFO L93 Difference]: Finished difference Result 45 states and 74 transitions. [2022-12-13 21:44:55,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:55,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-13 21:44:55,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:44:55,715 INFO L225 Difference]: With dead ends: 45 [2022-12-13 21:44:55,715 INFO L226 Difference]: Without dead ends: 23 [2022-12-13 21:44:55,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 21:44:55,719 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:44:55,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 44 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:44:55,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-13 21:44:55,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2022-12-13 21:44:55,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 21:44:55,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-12-13 21:44:55,747 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 7 [2022-12-13 21:44:55,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:44:55,748 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-12-13 21:44:55,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:55,748 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-12-13 21:44:55,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 21:44:55,748 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:44:55,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:44:55,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:44:55,749 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:44:55,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:55,749 INFO L85 PathProgramCache]: Analyzing trace with hash 300961951, now seen corresponding path program 1 times [2022-12-13 21:44:55,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:55,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355383595] [2022-12-13 21:44:55,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:55,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:55,816 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 21:44:55,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:55,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355383595] [2022-12-13 21:44:55,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355383595] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:55,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:55,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:44:55,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887094353] [2022-12-13 21:44:55,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:55,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:44:55,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:55,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:44:55,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:55,820 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:55,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:44:55,840 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2022-12-13 21:44:55,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:55,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 21:44:55,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:44:55,841 INFO L225 Difference]: With dead ends: 35 [2022-12-13 21:44:55,841 INFO L226 Difference]: Without dead ends: 21 [2022-12-13 21:44:55,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 21:44:55,843 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:44:55,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 33 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:44:55,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-13 21:44:55,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2022-12-13 21:44:55,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 21:44:55,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-12-13 21:44:55,850 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 8 [2022-12-13 21:44:55,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:44:55,850 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-12-13 21:44:55,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:55,851 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-12-13 21:44:55,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 21:44:55,851 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:44:55,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:44:55,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:44:55,852 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:44:55,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:55,853 INFO L85 PathProgramCache]: Analyzing trace with hash 766069286, now seen corresponding path program 1 times [2022-12-13 21:44:55,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:55,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461984532] [2022-12-13 21:44:55,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:55,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:55,914 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 21:44:55,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:55,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461984532] [2022-12-13 21:44:55,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461984532] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:55,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:55,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:44:55,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610198456] [2022-12-13 21:44:55,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:55,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:44:55,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:55,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:44:55,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:44:55,916 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:55,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:44:55,927 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2022-12-13 21:44:55,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:44:55,927 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-13 21:44:55,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:44:55,928 INFO L225 Difference]: With dead ends: 35 [2022-12-13 21:44:55,928 INFO L226 Difference]: Without dead ends: 20 [2022-12-13 21:44:55,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 21:44:55,929 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:44:55,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 34 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:44:55,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-13 21:44:55,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2022-12-13 21:44:55,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 21:44:55,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-12-13 21:44:55,933 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2022-12-13 21:44:55,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:44:55,933 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-12-13 21:44:55,934 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:55,934 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-12-13 21:44:55,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 21:44:55,934 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:44:55,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:44:55,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:44:55,934 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:44:55,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:55,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1993625471, now seen corresponding path program 1 times [2022-12-13 21:44:55,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:55,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714550315] [2022-12-13 21:44:55,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:55,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:56,007 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 21:44:56,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:56,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714550315] [2022-12-13 21:44:56,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714550315] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:44:56,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372915039] [2022-12-13 21:44:56,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:56,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:44:56,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:44:56,009 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:44:56,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 21:44:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:56,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:44:56,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:44:56,097 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 21:44:56,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:44:56,122 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 21:44:56,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372915039] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:44:56,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:44:56,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 21:44:56,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791715823] [2022-12-13 21:44:56,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:44:56,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:44:56,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:56,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:44:56,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:44:56,125 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:56,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:44:56,160 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2022-12-13 21:44:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:44:56,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-13 21:44:56,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:44:56,161 INFO L225 Difference]: With dead ends: 39 [2022-12-13 21:44:56,161 INFO L226 Difference]: Without dead ends: 23 [2022-12-13 21:44:56,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:44:56,162 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:44:56,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 50 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:44:56,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-13 21:44:56,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-12-13 21:44:56,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 21:44:56,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-12-13 21:44:56,167 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 10 [2022-12-13 21:44:56,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:44:56,167 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-12-13 21:44:56,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:56,167 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-12-13 21:44:56,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 21:44:56,168 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:44:56,168 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:44:56,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:44:56,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:44:56,369 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:44:56,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:56,370 INFO L85 PathProgramCache]: Analyzing trace with hash 775784678, now seen corresponding path program 2 times [2022-12-13 21:44:56,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:56,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110516977] [2022-12-13 21:44:56,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:56,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:56,585 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:56,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:56,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110516977] [2022-12-13 21:44:56,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110516977] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:44:56,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427365468] [2022-12-13 21:44:56,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:44:56,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:44:56,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:44:56,587 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:44:56,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 21:44:56,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:44:56,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:44:56,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:44:56,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:44:56,678 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:56,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:44:56,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:56,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427365468] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:44:56,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:44:56,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-12-13 21:44:56,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532662222] [2022-12-13 21:44:56,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:44:56,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 21:44:56,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:56,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 21:44:56,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:44:56,750 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:57,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:44:57,071 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2022-12-13 21:44:57,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 21:44:57,071 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-13 21:44:57,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:44:57,072 INFO L225 Difference]: With dead ends: 48 [2022-12-13 21:44:57,072 INFO L226 Difference]: Without dead ends: 29 [2022-12-13 21:44:57,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2022-12-13 21:44:57,074 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:44:57,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 127 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:44:57,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-13 21:44:57,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-12-13 21:44:57,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 21:44:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-12-13 21:44:57,081 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 13 [2022-12-13 21:44:57,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:44:57,081 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-12-13 21:44:57,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:57,082 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-12-13 21:44:57,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 21:44:57,082 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:44:57,082 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:44:57,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 21:44:57,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:44:57,284 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:44:57,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:57,286 INFO L85 PathProgramCache]: Analyzing trace with hash 2064634630, now seen corresponding path program 3 times [2022-12-13 21:44:57,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:57,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686503974] [2022-12-13 21:44:57,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:57,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:57,588 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:57,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:57,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686503974] [2022-12-13 21:44:57,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686503974] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:44:57,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232584929] [2022-12-13 21:44:57,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:44:57,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:44:57,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:44:57,589 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:44:57,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 21:44:57,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-13 21:44:57,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:44:57,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 21:44:57,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:44:57,716 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:57,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:44:57,983 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:57,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232584929] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:44:57,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:44:57,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-12-13 21:44:57,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427976180] [2022-12-13 21:44:57,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:44:57,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 21:44:57,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:57,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 21:44:57,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2022-12-13 21:44:57,987 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 25 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:03,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:45:03,705 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2022-12-13 21:45:03,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 21:45:03,706 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-12-13 21:45:03,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:45:03,706 INFO L225 Difference]: With dead ends: 66 [2022-12-13 21:45:03,706 INFO L226 Difference]: Without dead ends: 41 [2022-12-13 21:45:03,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=440, Invalid=750, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 21:45:03,707 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:45:03,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 208 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:45:03,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-12-13 21:45:03,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2022-12-13 21:45:03,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 36 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 21:45:03,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2022-12-13 21:45:03,716 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 19 [2022-12-13 21:45:03,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:45:03,716 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2022-12-13 21:45:03,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:03,717 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2022-12-13 21:45:03,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-13 21:45:03,717 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:45:03,717 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:45:03,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 21:45:03,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:45:03,918 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:45:03,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:45:03,919 INFO L85 PathProgramCache]: Analyzing trace with hash -564256954, now seen corresponding path program 4 times [2022-12-13 21:45:03,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:45:03,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307570960] [2022-12-13 21:45:03,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:03,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:45:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:04,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:45:04,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307570960] [2022-12-13 21:45:04,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307570960] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:45:04,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296612975] [2022-12-13 21:45:04,396 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 21:45:04,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:45:04,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:45:04,397 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:45:04,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 21:45:04,461 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 21:45:04,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:45:04,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-13 21:45:04,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:45:04,553 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:04,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:45:05,412 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:05,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296612975] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:45:05,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:45:05,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-12-13 21:45:05,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718278685] [2022-12-13 21:45:05,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:45:05,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-13 21:45:05,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:45:05,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-13 21:45:05,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=1682, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 21:45:05,416 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 49 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:47:09,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:47:09,771 INFO L93 Difference]: Finished difference Result 102 states and 134 transitions. [2022-12-13 21:47:09,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 21:47:09,771 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-12-13 21:47:09,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:47:09,772 INFO L225 Difference]: With dead ends: 102 [2022-12-13 21:47:09,772 INFO L226 Difference]: Without dead ends: 65 [2022-12-13 21:47:09,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 125.1s TimeCoverageRelationStatistics Valid=1745, Invalid=3222, Unknown=3, NotChecked=0, Total=4970 [2022-12-13 21:47:09,775 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:47:09,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 386 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:47:09,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-12-13 21:47:09,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2022-12-13 21:47:09,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 60 states have internal predecessors, (63), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 21:47:09,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2022-12-13 21:47:09,788 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 31 [2022-12-13 21:47:09,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:47:09,788 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2022-12-13 21:47:09,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:47:09,788 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2022-12-13 21:47:09,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-13 21:47:09,789 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:47:09,789 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:47:09,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 21:47:09,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 21:47:09,990 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:47:09,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:47:09,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2140772294, now seen corresponding path program 5 times [2022-12-13 21:47:09,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:47:09,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111047755] [2022-12-13 21:47:09,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:47:09,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:47:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:47:11,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:47:11,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:47:11,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111047755] [2022-12-13 21:47:11,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111047755] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:47:11,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301687538] [2022-12-13 21:47:11,263 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 21:47:11,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:47:11,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:47:11,264 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:47:11,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0528682d-7a80-4b00-be32-9068e7dc786b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 21:47:19,839 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2022-12-13 21:47:19,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:47:19,852 WARN L261 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 95 conjunts are in the unsatisfiable core [2022-12-13 21:47:19,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:47:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:47:20,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:47:23,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:47:23,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301687538] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:47:23,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:47:23,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2022-12-13 21:47:23,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382465429] [2022-12-13 21:47:23,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:47:23,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-12-13 21:47:23,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:47:23,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-12-13 21:47:23,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2494, Invalid=6818, Unknown=0, NotChecked=0, Total=9312 [2022-12-13 21:47:23,342 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 97 states, 97 states have (on average 1.0721649484536082) internal successors, (104), 97 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:48:11,851 WARN L233 SmtUtils]: Spent 10.74s on a formula simplification. DAG size of input: 190 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:48:13,862 WARN L837 $PredicateComparison]: unable to prove that (and (< (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 268435455) (< (mod (+ 3 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 22 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 1) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 11) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 33) 4294967296) 268435455) (< (mod (+ 6 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 39) 4294967296) 268435455) (< (mod (+ 9 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 13) 4294967296) 268435455) (< (mod (+ 14 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 10) 4294967296) 268435455) (< (mod (+ 31 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 20) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 34) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 12) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 24) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 26) 4294967296) 268435455) (< (mod (+ 41 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 17) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 15) 4294967296) 268435455) (< (mod (+ 23 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 8) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 43) 4294967296) 268435455) (< (mod (+ 2 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 45) 4294967296) 268435455) (< (mod (+ 42 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 5 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 18) 4294967296) 268435455) (< (mod (+ 19 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 37) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 38) 4294967296) 268435455) (< (mod (+ 32 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 16 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 36) 4294967296) 268435455) (< (mod (+ 21 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 44 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 28) 4294967296) 268435455) (< (mod (+ 35 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 27) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 7 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 25) 4294967296) 268435455) (< (mod (+ 30 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 29 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) is different from false [2022-12-13 21:48:55,346 WARN L233 SmtUtils]: Spent 8.57s on a formula simplification. DAG size of input: 182 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:48:57,360 WARN L837 $PredicateComparison]: unable to prove that (and (< (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 268435455) (< (mod (+ 3 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 22 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 1) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 11) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 33) 4294967296) 268435455) (< (mod (+ 6 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 39) 4294967296) 268435455) (< (mod (+ 9 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 13) 4294967296) 268435455) (< (mod (+ 14 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 10) 4294967296) 268435455) (< (mod (+ 31 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 20) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 34) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 12) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 24) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 26) 4294967296) 268435455) (< (mod (+ 41 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 17) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 15) 4294967296) 268435455) (< (mod (+ 23 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 8) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 43) 4294967296) 268435455) (< (mod (+ 2 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 42 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 5 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 18) 4294967296) 268435455) (< (mod (+ 19 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 37) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 38) 4294967296) 268435455) (< (mod (+ 32 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 16 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 36) 4294967296) 268435455) (< (mod (+ 21 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 28) 4294967296) 268435455) (< (mod (+ 35 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 27) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 7 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~z~0#1| 25) 4294967296) 268435455) (< (mod (+ 30 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455) (< (mod (+ 29 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 268435455)) is different from false [2022-12-13 21:49:55,438 WARN L233 SmtUtils]: Spent 8.72s on a formula simplification. DAG size of input: 174 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:50:56,707 WARN L233 SmtUtils]: Spent 11.54s on a formula simplification. DAG size of input: 170 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:51:50,586 WARN L233 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 166 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:52:47,062 WARN L233 SmtUtils]: Spent 11.34s on a formula simplification. DAG size of input: 162 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:53:52,743 WARN L233 SmtUtils]: Spent 7.72s on a formula simplification. DAG size of input: 158 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:55:00,529 WARN L233 SmtUtils]: Spent 9.61s on a formula simplification. DAG size of input: 154 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:56:11,792 WARN L233 SmtUtils]: Spent 8.24s on a formula simplification. DAG size of input: 150 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:58:12,727 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 142 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:59:15,458 WARN L233 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 138 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)