./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R --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 c2bb9f0c15e3c3296f863c26b4377b27546cf1c417a60e9663a6ff48eb617ef8 --- 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-38b53e6 [2022-11-25 17:51:27,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:51:27,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:51:27,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:51:27,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:51:27,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:51:27,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:51:27,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:51:27,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:51:27,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:51:27,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:51:27,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:51:27,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:51:27,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:51:27,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:51:27,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:51:27,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:51:27,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:51:27,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:51:27,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:51:27,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:51:27,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:51:27,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:51:27,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:51:27,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:51:27,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:51:27,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:51:27,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:51:27,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:51:27,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:51:27,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:51:27,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:51:27,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:51:27,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:51:27,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:51:27,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:51:27,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:51:27,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:51:27,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:51:27,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:51:27,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:51:27,910 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:51:27,936 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:51:27,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:51:27,937 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:51:27,937 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:51:27,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:51:27,938 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:51:27,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:51:27,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:51:27,939 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:51:27,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:51:27,940 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:51:27,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:51:27,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:51:27,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:51:27,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:51:27,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:51:27,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:51:27,942 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:51:27,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:51:27,942 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:51:27,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:51:27,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:51:27,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:51:27,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:51:27,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:51:27,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:51:27,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:51:27,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:51:27,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:51:27,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:51:27,945 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:51:27,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:51:27,945 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:51:27,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:51:27,946 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_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2bb9f0c15e3c3296f863c26b4377b27546cf1c417a60e9663a6ff48eb617ef8 [2022-11-25 17:51:28,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:51:28,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:51:28,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:51:28,279 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:51:28,279 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:51:28,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i [2022-11-25 17:51:31,556 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:51:31,900 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:51:31,900 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i [2022-11-25 17:51:31,919 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/data/e2434db80/29080feff5734678b80e8a641583671a/FLAGb92578ee0 [2022-11-25 17:51:31,941 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/data/e2434db80/29080feff5734678b80e8a641583671a [2022-11-25 17:51:31,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:51:31,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:51:31,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:51:31,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:51:31,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:51:31,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:51:31" (1/1) ... [2022-11-25 17:51:31,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@338d68bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:31, skipping insertion in model container [2022-11-25 17:51:31,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:51:31" (1/1) ... [2022-11-25 17:51:31,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:51:32,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:51:32,427 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_646cff53-630b-470b-9261-3dbe2b12942c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[33021,33034] [2022-11-25 17:51:32,591 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 17:51:32,612 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_646cff53-630b-470b-9261-3dbe2b12942c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44124,44137] [2022-11-25 17:51:32,613 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_646cff53-630b-470b-9261-3dbe2b12942c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44245,44258] [2022-11-25 17:51:32,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:51:32,640 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:51:32,686 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_646cff53-630b-470b-9261-3dbe2b12942c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[33021,33034] [2022-11-25 17:51:32,779 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 17:51:32,786 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_646cff53-630b-470b-9261-3dbe2b12942c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44124,44137] [2022-11-25 17:51:32,789 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_646cff53-630b-470b-9261-3dbe2b12942c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44245,44258] [2022-11-25 17:51:32,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:51:32,870 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:51:32,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:32 WrapperNode [2022-11-25 17:51:32,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:51:32,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:51:32,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:51:32,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:51:32,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:32" (1/1) ... [2022-11-25 17:51:32,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:32" (1/1) ... [2022-11-25 17:51:32,975 INFO L138 Inliner]: procedures = 176, calls = 277, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 992 [2022-11-25 17:51:32,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:51:32,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:51:32,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:51:32,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:51:32,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:32" (1/1) ... [2022-11-25 17:51:32,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:32" (1/1) ... [2022-11-25 17:51:32,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:32" (1/1) ... [2022-11-25 17:51:32,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:32" (1/1) ... [2022-11-25 17:51:33,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:32" (1/1) ... [2022-11-25 17:51:33,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:32" (1/1) ... [2022-11-25 17:51:33,078 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:32" (1/1) ... [2022-11-25 17:51:33,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:32" (1/1) ... [2022-11-25 17:51:33,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:51:33,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:51:33,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:51:33,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:51:33,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:32" (1/1) ... [2022-11-25 17:51:33,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:51:33,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:51:33,144 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:51:33,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:51:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:51:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:51:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-25 17:51:33,196 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-25 17:51:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:51:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:51:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 17:51:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:51:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-25 17:51:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 17:51:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:51:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:51:33,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:51:33,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:51:33,468 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:51:33,470 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:51:35,184 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:51:35,194 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:51:35,194 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-25 17:51:35,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:51:35 BoogieIcfgContainer [2022-11-25 17:51:35,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:51:35,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:51:35,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:51:35,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:51:35,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:51:31" (1/3) ... [2022-11-25 17:51:35,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2831f9eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:51:35, skipping insertion in model container [2022-11-25 17:51:35,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:32" (2/3) ... [2022-11-25 17:51:35,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2831f9eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:51:35, skipping insertion in model container [2022-11-25 17:51:35,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:51:35" (3/3) ... [2022-11-25 17:51:35,211 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test7-1.i [2022-11-25 17:51:35,231 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:51:35,232 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 17:51:35,310 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:51:35,334 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;@5ce56ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:51:35,335 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 17:51:35,340 INFO L276 IsEmpty]: Start isEmpty. Operand has 184 states, 177 states have (on average 1.7005649717514124) internal successors, (301), 179 states have internal predecessors, (301), 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) [2022-11-25 17:51:35,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 17:51:35,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:51:35,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:51:35,349 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:51:35,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:51:35,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1993316328, now seen corresponding path program 1 times [2022-11-25 17:51:35,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:51:35,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962980548] [2022-11-25 17:51:35,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:35,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:51:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:35,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:51:35,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:51:35,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962980548] [2022-11-25 17:51:35,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962980548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:51:35,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:51:35,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:51:35,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788548064] [2022-11-25 17:51:35,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:51:35,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:51:35,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:51:35,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:51:35,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:51:35,717 INFO L87 Difference]: Start difference. First operand has 184 states, 177 states have (on average 1.7005649717514124) internal successors, (301), 179 states have internal predecessors, (301), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:35,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:51:35,803 INFO L93 Difference]: Finished difference Result 365 states and 611 transitions. [2022-11-25 17:51:35,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:51:35,806 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-25 17:51:35,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:51:35,824 INFO L225 Difference]: With dead ends: 365 [2022-11-25 17:51:35,825 INFO L226 Difference]: Without dead ends: 179 [2022-11-25 17:51:35,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:51:35,835 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:51:35,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:51:35,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-25 17:51:35,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-11-25 17:51:35,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 173 states have (on average 1.3121387283236994) internal successors, (227), 174 states have internal predecessors, (227), 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) [2022-11-25 17:51:35,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 233 transitions. [2022-11-25 17:51:35,925 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 233 transitions. Word has length 8 [2022-11-25 17:51:35,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:51:35,926 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 233 transitions. [2022-11-25 17:51:35,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:35,926 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 233 transitions. [2022-11-25 17:51:35,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 17:51:35,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:51:35,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:51:35,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:51:35,928 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:51:35,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:51:35,929 INFO L85 PathProgramCache]: Analyzing trace with hash -923396581, now seen corresponding path program 1 times [2022-11-25 17:51:35,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:51:35,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239598472] [2022-11-25 17:51:35,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:35,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:51:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:36,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:51:36,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:51:36,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239598472] [2022-11-25 17:51:36,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239598472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:51:36,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:51:36,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:51:36,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94758179] [2022-11-25 17:51:36,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:51:36,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:51:36,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:51:36,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:51:36,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:51:36,211 INFO L87 Difference]: Start difference. First operand 179 states and 233 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:36,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:51:36,815 INFO L93 Difference]: Finished difference Result 384 states and 502 transitions. [2022-11-25 17:51:36,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:51:36,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-25 17:51:36,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:51:36,818 INFO L225 Difference]: With dead ends: 384 [2022-11-25 17:51:36,818 INFO L226 Difference]: Without dead ends: 297 [2022-11-25 17:51:36,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:51:36,820 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 147 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:51:36,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 562 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:51:36,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-11-25 17:51:36,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 181. [2022-11-25 17:51:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 175 states have (on average 1.3085714285714285) internal successors, (229), 176 states have internal predecessors, (229), 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) [2022-11-25 17:51:36,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 235 transitions. [2022-11-25 17:51:36,840 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 235 transitions. Word has length 10 [2022-11-25 17:51:36,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:51:36,840 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 235 transitions. [2022-11-25 17:51:36,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:36,841 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 235 transitions. [2022-11-25 17:51:36,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 17:51:36,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:51:36,843 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:51:36,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:51:36,844 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:51:36,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:51:36,844 INFO L85 PathProgramCache]: Analyzing trace with hash -413647769, now seen corresponding path program 1 times [2022-11-25 17:51:36,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:51:36,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367148732] [2022-11-25 17:51:36,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:36,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:51:37,016 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:51:37,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [701184719] [2022-11-25 17:51:37,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:37,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:51:37,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:51:37,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:51:37,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:51:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:37,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 1571 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:51:37,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:51:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:51:37,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:51:37,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:51:37,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367148732] [2022-11-25 17:51:37,865 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:51:37,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701184719] [2022-11-25 17:51:37,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701184719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:51:37,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:51:37,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:51:37,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438976575] [2022-11-25 17:51:37,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:51:37,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:51:37,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:51:37,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:51:37,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:51:37,869 INFO L87 Difference]: Start difference. First operand 181 states and 235 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:37,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:51:37,967 INFO L93 Difference]: Finished difference Result 379 states and 497 transitions. [2022-11-25 17:51:37,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:51:37,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-25 17:51:37,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:51:37,969 INFO L225 Difference]: With dead ends: 379 [2022-11-25 17:51:37,969 INFO L226 Difference]: Without dead ends: 202 [2022-11-25 17:51:37,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:51:37,975 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 9 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:51:37,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 411 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:51:37,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-25 17:51:37,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 201. [2022-11-25 17:51:37,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 195 states have (on average 1.2769230769230768) internal successors, (249), 196 states have internal predecessors, (249), 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) [2022-11-25 17:51:37,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 255 transitions. [2022-11-25 17:51:37,993 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 255 transitions. Word has length 62 [2022-11-25 17:51:37,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:51:37,994 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 255 transitions. [2022-11-25 17:51:37,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:37,994 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 255 transitions. [2022-11-25 17:51:37,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 17:51:37,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:51:37,996 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:51:38,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:51:38,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:51:38,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:51:38,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:51:38,209 INFO L85 PathProgramCache]: Analyzing trace with hash 483745509, now seen corresponding path program 1 times [2022-11-25 17:51:38,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:51:38,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821033469] [2022-11-25 17:51:38,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:38,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:51:38,360 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:51:38,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877734942] [2022-11-25 17:51:38,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:38,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:51:38,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:51:38,363 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:51:38,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:51:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:39,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 1573 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:51:39,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:51:39,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:51:39,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:51:39,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:51:39,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821033469] [2022-11-25 17:51:39,312 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:51:39,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877734942] [2022-11-25 17:51:39,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877734942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:51:39,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:51:39,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:51:39,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979832793] [2022-11-25 17:51:39,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:51:39,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:51:39,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:51:39,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:51:39,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:51:39,317 INFO L87 Difference]: Start difference. First operand 201 states and 255 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:39,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:51:39,409 INFO L93 Difference]: Finished difference Result 390 states and 498 transitions. [2022-11-25 17:51:39,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:51:39,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-25 17:51:39,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:51:39,411 INFO L225 Difference]: With dead ends: 390 [2022-11-25 17:51:39,412 INFO L226 Difference]: Without dead ends: 193 [2022-11-25 17:51:39,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:51:39,418 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 218 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:51:39,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 429 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:51:39,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-25 17:51:39,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 187. [2022-11-25 17:51:39,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 181 states have (on average 1.2596685082872927) internal successors, (228), 182 states have internal predecessors, (228), 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) [2022-11-25 17:51:39,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 234 transitions. [2022-11-25 17:51:39,431 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 234 transitions. Word has length 62 [2022-11-25 17:51:39,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:51:39,432 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 234 transitions. [2022-11-25 17:51:39,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:39,432 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 234 transitions. [2022-11-25 17:51:39,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 17:51:39,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:51:39,434 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:51:39,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:51:39,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:51:39,644 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:51:39,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:51:39,645 INFO L85 PathProgramCache]: Analyzing trace with hash 955892211, now seen corresponding path program 1 times [2022-11-25 17:51:39,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:51:39,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110451320] [2022-11-25 17:51:39,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:39,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:51:39,773 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:51:39,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [229723667] [2022-11-25 17:51:39,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:39,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:51:39,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:51:39,775 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:51:39,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:51:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:40,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 1559 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:51:40,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:51:40,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:51:40,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:51:40,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:51:40,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110451320] [2022-11-25 17:51:40,890 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:51:40,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229723667] [2022-11-25 17:51:40,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229723667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:51:40,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:51:40,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:51:40,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421788495] [2022-11-25 17:51:40,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:51:40,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:51:40,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:51:40,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:51:40,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:51:40,894 INFO L87 Difference]: Start difference. First operand 187 states and 234 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:41,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:51:41,022 INFO L93 Difference]: Finished difference Result 483 states and 604 transitions. [2022-11-25 17:51:41,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:51:41,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-25 17:51:41,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:51:41,025 INFO L225 Difference]: With dead ends: 483 [2022-11-25 17:51:41,025 INFO L226 Difference]: Without dead ends: 300 [2022-11-25 17:51:41,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:51:41,026 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 101 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:51:41,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 463 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:51:41,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-25 17:51:41,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 293. [2022-11-25 17:51:41,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 287 states have (on average 1.2578397212543555) internal successors, (361), 288 states have internal predecessors, (361), 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) [2022-11-25 17:51:41,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 367 transitions. [2022-11-25 17:51:41,052 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 367 transitions. Word has length 62 [2022-11-25 17:51:41,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:51:41,055 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 367 transitions. [2022-11-25 17:51:41,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:51:41,055 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 367 transitions. [2022-11-25 17:51:41,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 17:51:41,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:51:41,063 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:51:41,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:51:41,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:51:41,273 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:51:41,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:51:41,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1860031521, now seen corresponding path program 1 times [2022-11-25 17:51:41,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:51:41,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920829050] [2022-11-25 17:51:41,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:41,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:51:41,326 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:51:41,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378273901] [2022-11-25 17:51:41,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:41,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:51:41,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:51:41,328 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:51:41,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:51:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:42,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:51:42,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:51:42,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 17:51:42,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-25 17:51:42,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:51:42,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:51:42,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:51:42,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920829050] [2022-11-25 17:51:42,075 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:51:42,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378273901] [2022-11-25 17:51:42,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378273901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:51:42,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:51:42,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:51:42,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476596546] [2022-11-25 17:51:42,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:51:42,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:51:42,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:51:42,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:51:42,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:51:42,078 INFO L87 Difference]: Start difference. First operand 293 states and 367 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:51:42,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:51:42,473 INFO L93 Difference]: Finished difference Result 391 states and 497 transitions. [2022-11-25 17:51:42,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:51:42,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2022-11-25 17:51:42,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:51:42,476 INFO L225 Difference]: With dead ends: 391 [2022-11-25 17:51:42,476 INFO L226 Difference]: Without dead ends: 387 [2022-11-25 17:51:42,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:51:42,477 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 103 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:51:42,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 586 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:51:42,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-11-25 17:51:42,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 295. [2022-11-25 17:51:42,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 289 states have (on average 1.2560553633217992) internal successors, (363), 290 states have internal predecessors, (363), 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) [2022-11-25 17:51:42,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 369 transitions. [2022-11-25 17:51:42,499 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 369 transitions. Word has length 77 [2022-11-25 17:51:42,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:51:42,505 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 369 transitions. [2022-11-25 17:51:42,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:51:42,506 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 369 transitions. [2022-11-25 17:51:42,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-25 17:51:42,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:51:42,513 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:51:42,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:51:42,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:51:42,729 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:51:42,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:51:42,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1180652711, now seen corresponding path program 1 times [2022-11-25 17:51:42,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:51:42,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973952702] [2022-11-25 17:51:42,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:42,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:51:42,801 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:51:42,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889308062] [2022-11-25 17:51:42,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:42,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:51:42,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:51:42,804 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:51:42,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:51:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:43,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:51:43,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:51:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:51:43,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:51:43,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:51:43,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973952702] [2022-11-25 17:51:43,555 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:51:43,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889308062] [2022-11-25 17:51:43,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889308062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:51:43,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:51:43,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:51:43,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269927941] [2022-11-25 17:51:43,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:51:43,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:51:43,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:51:43,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:51:43,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:51:43,558 INFO L87 Difference]: Start difference. First operand 295 states and 369 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:51:43,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:51:43,658 INFO L93 Difference]: Finished difference Result 485 states and 628 transitions. [2022-11-25 17:51:43,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:51:43,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2022-11-25 17:51:43,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:51:43,661 INFO L225 Difference]: With dead ends: 485 [2022-11-25 17:51:43,661 INFO L226 Difference]: Without dead ends: 337 [2022-11-25 17:51:43,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:51:43,662 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 10 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:51:43,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 397 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:51:43,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-25 17:51:43,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 335. [2022-11-25 17:51:43,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 329 states have (on average 1.2249240121580547) internal successors, (403), 330 states have internal predecessors, (403), 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) [2022-11-25 17:51:43,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 409 transitions. [2022-11-25 17:51:43,677 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 409 transitions. Word has length 111 [2022-11-25 17:51:43,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:51:43,678 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 409 transitions. [2022-11-25 17:51:43,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:51:43,678 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 409 transitions. [2022-11-25 17:51:43,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-25 17:51:43,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:51:43,680 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:51:43,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:51:43,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:51:43,891 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:51:43,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:51:43,892 INFO L85 PathProgramCache]: Analyzing trace with hash 899855019, now seen corresponding path program 1 times [2022-11-25 17:51:43,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:51:43,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325324798] [2022-11-25 17:51:43,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:43,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:51:43,949 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:51:43,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907028810] [2022-11-25 17:51:43,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:43,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:51:43,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:51:43,951 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:51:43,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:51:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:44,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:51:44,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:51:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:51:44,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:51:44,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:51:44,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325324798] [2022-11-25 17:51:44,701 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:51:44,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907028810] [2022-11-25 17:51:44,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907028810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:51:44,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:51:44,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:51:44,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896458952] [2022-11-25 17:51:44,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:51:44,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:51:44,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:51:44,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:51:44,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:51:44,706 INFO L87 Difference]: Start difference. First operand 335 states and 409 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:51:44,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:51:44,803 INFO L93 Difference]: Finished difference Result 500 states and 623 transitions. [2022-11-25 17:51:44,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:51:44,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2022-11-25 17:51:44,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:51:44,807 INFO L225 Difference]: With dead ends: 500 [2022-11-25 17:51:44,807 INFO L226 Difference]: Without dead ends: 312 [2022-11-25 17:51:44,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:51:44,809 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 110 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:51:44,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 513 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:51:44,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-11-25 17:51:44,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 307. [2022-11-25 17:51:44,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 301 states have (on average 1.1993355481727574) internal successors, (361), 302 states have internal predecessors, (361), 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) [2022-11-25 17:51:44,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 367 transitions. [2022-11-25 17:51:44,829 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 367 transitions. Word has length 111 [2022-11-25 17:51:44,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:51:44,830 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 367 transitions. [2022-11-25 17:51:44,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:51:44,831 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 367 transitions. [2022-11-25 17:51:44,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-25 17:51:44,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:51:44,832 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:51:44,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:51:45,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:51:45,042 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:51:45,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:51:45,044 INFO L85 PathProgramCache]: Analyzing trace with hash 17006173, now seen corresponding path program 1 times [2022-11-25 17:51:45,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:51:45,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59938410] [2022-11-25 17:51:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:45,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:51:45,096 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:51:45,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653972033] [2022-11-25 17:51:45,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:45,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:51:45,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:51:45,098 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:51:45,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:51:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:51:45,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:51:45,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:51:46,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 17:51:46,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:51:46,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:51:46,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59938410] [2022-11-25 17:51:46,022 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:51:46,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653972033] [2022-11-25 17:51:46,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653972033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:51:46,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:51:46,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:51:46,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790643611] [2022-11-25 17:51:46,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:51:46,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:51:46,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:51:46,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:51:46,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:51:46,025 INFO L87 Difference]: Start difference. First operand 307 states and 367 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:51:46,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:51:46,424 INFO L93 Difference]: Finished difference Result 657 states and 792 transitions. [2022-11-25 17:51:46,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:51:46,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2022-11-25 17:51:46,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:51:46,427 INFO L225 Difference]: With dead ends: 657 [2022-11-25 17:51:46,427 INFO L226 Difference]: Without dead ends: 398 [2022-11-25 17:51:46,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:51:46,429 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 406 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:51:46,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 373 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:51:46,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-11-25 17:51:46,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 391. [2022-11-25 17:51:46,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 385 states have (on average 1.2077922077922079) internal successors, (465), 386 states have internal predecessors, (465), 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) [2022-11-25 17:51:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 471 transitions. [2022-11-25 17:51:46,449 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 471 transitions. Word has length 111 [2022-11-25 17:51:46,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:51:46,450 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 471 transitions. [2022-11-25 17:51:46,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:51:46,450 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 471 transitions. [2022-11-25 17:51:46,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-25 17:51:46,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:51:46,451 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:51:46,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-25 17:51:46,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:51:46,660 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:51:46,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:51:46,661 INFO L85 PathProgramCache]: Analyzing trace with hash -793876116, now seen corresponding path program 1 times [2022-11-25 17:51:46,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:51:46,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253528622] [2022-11-25 17:51:46,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:46,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:51:46,721 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:51:46,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431928669] [2022-11-25 17:51:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:51:46,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:51:46,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:51:46,723 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:51:46,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 17:52:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:19,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:52:19,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:19,380 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:52:19,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:52:19,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:19,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253528622] [2022-11-25 17:52:19,381 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:52:19,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431928669] [2022-11-25 17:52:19,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431928669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:52:19,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:52:19,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:52:19,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930241009] [2022-11-25 17:52:19,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:52:19,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:52:19,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:19,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:52:19,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:52:19,385 INFO L87 Difference]: Start difference. First operand 391 states and 471 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:52:19,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:52:19,443 INFO L93 Difference]: Finished difference Result 734 states and 891 transitions. [2022-11-25 17:52:19,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:52:19,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 118 [2022-11-25 17:52:19,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:52:19,448 INFO L225 Difference]: With dead ends: 734 [2022-11-25 17:52:19,448 INFO L226 Difference]: Without dead ends: 394 [2022-11-25 17:52:19,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:52:19,450 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 2 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:52:19,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 644 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:52:19,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-25 17:52:19,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2022-11-25 17:52:19,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 387 states have (on average 1.2093023255813953) internal successors, (468), 389 states have internal predecessors, (468), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 17:52:19,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 475 transitions. [2022-11-25 17:52:19,475 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 475 transitions. Word has length 118 [2022-11-25 17:52:19,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:52:19,475 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 475 transitions. [2022-11-25 17:52:19,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 17:52:19,476 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 475 transitions. [2022-11-25 17:52:19,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-25 17:52:19,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:52:19,478 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:19,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:19,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 17:52:19,699 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:52:19,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1203299854, now seen corresponding path program 1 times [2022-11-25 17:52:19,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:19,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553624499] [2022-11-25 17:52:19,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:19,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:19,784 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:52:19,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26967812] [2022-11-25 17:52:19,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:19,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:19,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:19,787 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:52:19,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 17:52:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:52:45,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 17:52:45,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:52:45,436 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:52:45,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:52:45,580 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:52:45,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:52:45,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553624499] [2022-11-25 17:52:45,581 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:52:45,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26967812] [2022-11-25 17:52:45,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26967812] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:52:45,581 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:52:45,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-25 17:52:45,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522755652] [2022-11-25 17:52:45,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:52:45,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:52:45,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:52:45,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:52:45,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:52:45,584 INFO L87 Difference]: Start difference. First operand 394 states and 475 transitions. Second operand has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 17:52:45,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:52:45,768 INFO L93 Difference]: Finished difference Result 748 states and 913 transitions. [2022-11-25 17:52:45,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:52:45,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 120 [2022-11-25 17:52:45,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:52:45,771 INFO L225 Difference]: With dead ends: 748 [2022-11-25 17:52:45,771 INFO L226 Difference]: Without dead ends: 403 [2022-11-25 17:52:45,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:52:45,773 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 12 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:52:45,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 641 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:52:45,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-11-25 17:52:45,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2022-11-25 17:52:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 395 states have (on average 1.2151898734177216) internal successors, (480), 397 states have internal predecessors, (480), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-25 17:52:45,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 488 transitions. [2022-11-25 17:52:45,795 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 488 transitions. Word has length 120 [2022-11-25 17:52:45,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:52:45,796 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 488 transitions. [2022-11-25 17:52:45,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 17:52:45,796 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 488 transitions. [2022-11-25 17:52:45,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-25 17:52:45,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:52:45,798 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:52:45,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:52:46,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 17:52:46,023 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:52:46,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:52:46,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1636960044, now seen corresponding path program 2 times [2022-11-25 17:52:46,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:52:46,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348506484] [2022-11-25 17:52:46,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:52:46,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:52:46,107 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:52:46,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [711276106] [2022-11-25 17:52:46,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:52:46,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:52:46,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:52:46,109 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:52:46,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 17:53:17,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:53:17,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:53:17,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-25 17:53:17,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:53:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 17:53:18,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:53:18,331 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 17:53:18,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:53:18,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348506484] [2022-11-25 17:53:18,332 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:53:18,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711276106] [2022-11-25 17:53:18,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711276106] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:53:18,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:53:18,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2022-11-25 17:53:18,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384009556] [2022-11-25 17:53:18,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:53:18,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 17:53:18,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:53:18,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 17:53:18,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:53:18,336 INFO L87 Difference]: Start difference. First operand 403 states and 488 transitions. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 17:53:18,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:53:18,750 INFO L93 Difference]: Finished difference Result 759 states and 926 transitions. [2022-11-25 17:53:18,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 17:53:18,751 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 124 [2022-11-25 17:53:18,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:53:18,754 INFO L225 Difference]: With dead ends: 759 [2022-11-25 17:53:18,754 INFO L226 Difference]: Without dead ends: 409 [2022-11-25 17:53:18,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2022-11-25 17:53:18,756 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 13 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:53:18,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1257 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:53:18,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-11-25 17:53:18,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 407. [2022-11-25 17:53:18,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 399 states have (on average 1.218045112781955) internal successors, (486), 401 states have internal predecessors, (486), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 17:53:18,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 493 transitions. [2022-11-25 17:53:18,784 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 493 transitions. Word has length 124 [2022-11-25 17:53:18,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:53:18,784 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 493 transitions. [2022-11-25 17:53:18,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 17:53:18,785 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 493 transitions. [2022-11-25 17:53:18,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-25 17:53:18,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:53:18,787 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:53:18,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:53:19,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 17:53:19,003 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:53:19,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:53:19,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1775467180, now seen corresponding path program 3 times [2022-11-25 17:53:19,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:53:19,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303155395] [2022-11-25 17:53:19,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:53:19,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:53:19,088 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:53:19,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1632304629] [2022-11-25 17:53:19,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:53:19,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:53:19,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:53:19,090 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:53:19,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_646cff53-630b-470b-9261-3dbe2b12942c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process