./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc --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 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 --- 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-5e519f3 [2022-11-02 19:55:59,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:55:59,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:55:59,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:55:59,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:55:59,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:55:59,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:55:59,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:55:59,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:55:59,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:55:59,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:55:59,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:55:59,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:55:59,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:55:59,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:55:59,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:55:59,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:55:59,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:55:59,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:55:59,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:55:59,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:55:59,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:55:59,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:55:59,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:55:59,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:55:59,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:55:59,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:55:59,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:55:59,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:55:59,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:55:59,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:55:59,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:55:59,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:55:59,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:55:59,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:55:59,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:55:59,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:55:59,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:55:59,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:55:59,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:55:59,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:55:59,998 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 19:56:00,040 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:56:00,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:56:00,041 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:56:00,041 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:56:00,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:56:00,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:56:00,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:56:00,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:56:00,044 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:56:00,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:56:00,045 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 19:56:00,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:56:00,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 19:56:00,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:56:00,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:56:00,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:56:00,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:56:00,047 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 19:56:00,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:56:00,048 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:56:00,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:56:00,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:56:00,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:56:00,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:56:00,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:56:00,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:56:00,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:56:00,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:56:00,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:56:00,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:56:00,052 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:56:00,052 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:56:00,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:56:00,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 [2022-11-02 19:56:00,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:56:00,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:56:00,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:56:00,370 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:56:00,375 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:56:00,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2022-11-02 19:56:00,452 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/data/ddb3fbc68/be0a18a5bace4ceb9470750d1e8c1918/FLAGd23e128ef [2022-11-02 19:56:01,041 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:56:01,042 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2022-11-02 19:56:01,070 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/data/ddb3fbc68/be0a18a5bace4ceb9470750d1e8c1918/FLAGd23e128ef [2022-11-02 19:56:01,278 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/data/ddb3fbc68/be0a18a5bace4ceb9470750d1e8c1918 [2022-11-02 19:56:01,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:56:01,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:56:01,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:56:01,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:56:01,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:56:01,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:56:01" (1/1) ... [2022-11-02 19:56:01,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f64fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:01, skipping insertion in model container [2022-11-02 19:56:01,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:56:01" (1/1) ... [2022-11-02 19:56:01,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:56:01,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:56:01,896 WARN L230 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_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[33021,33034] [2022-11-02 19:56:02,065 WARN L230 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_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[44590,44603] [2022-11-02 19:56:02,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:56:02,106 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:56:02,155 WARN L230 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_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[33021,33034] [2022-11-02 19:56:02,238 WARN L230 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_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[44590,44603] [2022-11-02 19:56:02,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:56:02,299 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:56:02,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:02 WrapperNode [2022-11-02 19:56:02,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:56:02,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:56:02,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:56:02,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:56:02,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:02" (1/1) ... [2022-11-02 19:56:02,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:02" (1/1) ... [2022-11-02 19:56:02,453 INFO L138 Inliner]: procedures = 177, calls = 336, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1181 [2022-11-02 19:56:02,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:56:02,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:56:02,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:56:02,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:56:02,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:02" (1/1) ... [2022-11-02 19:56:02,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:02" (1/1) ... [2022-11-02 19:56:02,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:02" (1/1) ... [2022-11-02 19:56:02,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:02" (1/1) ... [2022-11-02 19:56:02,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:02" (1/1) ... [2022-11-02 19:56:02,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:02" (1/1) ... [2022-11-02 19:56:02,623 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:02" (1/1) ... [2022-11-02 19:56:02,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:02" (1/1) ... [2022-11-02 19:56:02,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:56:02,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:56:02,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:56:02,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:56:02,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:02" (1/1) ... [2022-11-02 19:56:02,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:56:02,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:56:02,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:56:02,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:56:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 19:56:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 19:56:02,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 19:56:02,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 19:56:02,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-02 19:56:02,717 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-02 19:56:02,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 19:56:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 19:56:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 19:56:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 19:56:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-02 19:56:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 19:56:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 19:56:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 19:56:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:56:02,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:56:03,056 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:56:03,058 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:56:04,791 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:56:04,799 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:56:04,799 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-11-02 19:56:04,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:56:04 BoogieIcfgContainer [2022-11-02 19:56:04,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:56:04,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:56:04,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:56:04,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:56:04,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:56:01" (1/3) ... [2022-11-02 19:56:04,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1bbc71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:56:04, skipping insertion in model container [2022-11-02 19:56:04,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:02" (2/3) ... [2022-11-02 19:56:04,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1bbc71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:56:04, skipping insertion in model container [2022-11-02 19:56:04,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:56:04" (3/3) ... [2022-11-02 19:56:04,811 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test3-2.i [2022-11-02 19:56:04,830 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:56:04,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 19:56:04,888 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:56:04,895 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;@24e50289, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:56:04,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 19:56:04,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 218 states have (on average 1.6926605504587156) internal successors, (369), 225 states have internal predecessors, (369), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 19:56:04,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 19:56:04,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:04,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:04,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:04,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:04,915 INFO L85 PathProgramCache]: Analyzing trace with hash -858857507, now seen corresponding path program 1 times [2022-11-02 19:56:04,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:04,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254363898] [2022-11-02 19:56:04,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:04,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:05,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:05,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254363898] [2022-11-02 19:56:05,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254363898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:05,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:05,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:56:05,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884442731] [2022-11-02 19:56:05,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:05,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 19:56:05,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:05,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 19:56:05,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 19:56:05,186 INFO L87 Difference]: Start difference. First operand has 231 states, 218 states have (on average 1.6926605504587156) internal successors, (369), 225 states have internal predecessors, (369), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-02 19:56:05,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:05,263 INFO L93 Difference]: Finished difference Result 460 states and 773 transitions. [2022-11-02 19:56:05,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 19:56:05,266 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-02 19:56:05,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:05,277 INFO L225 Difference]: With dead ends: 460 [2022-11-02 19:56:05,277 INFO L226 Difference]: Without dead ends: 198 [2022-11-02 19:56:05,281 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 [2022-11-02 19:56:05,284 INFO L413 NwaCegarLoop]: 307 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, 307 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 [2022-11-02 19:56:05,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:56:05,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-02 19:56:05,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-11-02 19:56:05,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 186 states have (on average 1.3279569892473118) internal successors, (247), 192 states have internal predecessors, (247), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 19:56:05,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 263 transitions. [2022-11-02 19:56:05,390 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 263 transitions. Word has length 9 [2022-11-02 19:56:05,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:05,391 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 263 transitions. [2022-11-02 19:56:05,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-02 19:56:05,392 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 263 transitions. [2022-11-02 19:56:05,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 19:56:05,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:05,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:05,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 19:56:05,394 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:05,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:05,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1459926514, now seen corresponding path program 1 times [2022-11-02 19:56:05,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:05,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877585652] [2022-11-02 19:56:05,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:05,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:05,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:05,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877585652] [2022-11-02 19:56:05,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877585652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:05,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:05,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:05,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558359828] [2022-11-02 19:56:05,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:05,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:05,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:05,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:05,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:05,710 INFO L87 Difference]: Start difference. First operand 198 states and 263 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:06,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:06,273 INFO L93 Difference]: Finished difference Result 431 states and 581 transitions. [2022-11-02 19:56:06,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:56:06,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-02 19:56:06,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:06,277 INFO L225 Difference]: With dead ends: 431 [2022-11-02 19:56:06,277 INFO L226 Difference]: Without dead ends: 327 [2022-11-02 19:56:06,278 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 [2022-11-02 19:56:06,279 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 158 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:06,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 653 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 19:56:06,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-02 19:56:06,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 200. [2022-11-02 19:56:06,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 188 states have (on average 1.324468085106383) internal successors, (249), 194 states have internal predecessors, (249), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 19:56:06,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 265 transitions. [2022-11-02 19:56:06,296 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 265 transitions. Word has length 14 [2022-11-02 19:56:06,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:06,297 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 265 transitions. [2022-11-02 19:56:06,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:06,297 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 265 transitions. [2022-11-02 19:56:06,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 19:56:06,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:06,300 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, 1, 1, 1, 1] [2022-11-02 19:56:06,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 19:56:06,300 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:06,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:06,301 INFO L85 PathProgramCache]: Analyzing trace with hash -917613318, now seen corresponding path program 1 times [2022-11-02 19:56:06,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:06,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87438631] [2022-11-02 19:56:06,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:06,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:06,450 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:56:06,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146240143] [2022-11-02 19:56:06,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:06,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:06,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:56:06,453 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:56:06,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 19:56:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:07,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 1599 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:56:07,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:07,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:07,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:07,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:07,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87438631] [2022-11-02 19:56:07,300 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:56:07,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146240143] [2022-11-02 19:56:07,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146240143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:07,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:07,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:56:07,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049210913] [2022-11-02 19:56:07,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:07,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:56:07,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:07,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:56:07,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:56:07,311 INFO L87 Difference]: Start difference. First operand 200 states and 265 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:07,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:07,401 INFO L93 Difference]: Finished difference Result 417 states and 557 transitions. [2022-11-02 19:56:07,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:56:07,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 19:56:07,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:07,403 INFO L225 Difference]: With dead ends: 417 [2022-11-02 19:56:07,404 INFO L226 Difference]: Without dead ends: 221 [2022-11-02 19:56:07,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:56:07,414 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 9 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 471 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 [2022-11-02 19:56:07,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 471 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:56:07,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-02 19:56:07,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2022-11-02 19:56:07,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 208 states have (on average 1.2932692307692308) internal successors, (269), 214 states have internal predecessors, (269), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 19:56:07,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 285 transitions. [2022-11-02 19:56:07,434 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 285 transitions. Word has length 66 [2022-11-02 19:56:07,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:07,435 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 285 transitions. [2022-11-02 19:56:07,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:07,435 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 285 transitions. [2022-11-02 19:56:07,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 19:56:07,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:07,439 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, 1, 1, 1, 1] [2022-11-02 19:56:07,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:07,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:07,647 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:07,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:07,650 INFO L85 PathProgramCache]: Analyzing trace with hash -564524936, now seen corresponding path program 1 times [2022-11-02 19:56:07,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:07,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157210638] [2022-11-02 19:56:07,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:07,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:07,844 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:56:07,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417602604] [2022-11-02 19:56:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:07,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:07,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:56:07,847 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:56:07,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 19:56:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:08,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:56:08,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:08,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:08,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:08,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:08,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157210638] [2022-11-02 19:56:08,696 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:56:08,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417602604] [2022-11-02 19:56:08,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417602604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:08,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:08,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:08,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777460329] [2022-11-02 19:56:08,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:08,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:08,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:08,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:08,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:08,699 INFO L87 Difference]: Start difference. First operand 220 states and 285 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:08,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:08,788 INFO L93 Difference]: Finished difference Result 428 states and 558 transitions. [2022-11-02 19:56:08,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:56:08,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 19:56:08,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:08,790 INFO L225 Difference]: With dead ends: 428 [2022-11-02 19:56:08,790 INFO L226 Difference]: Without dead ends: 212 [2022-11-02 19:56:08,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:56:08,792 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 226 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:08,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 499 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:56:08,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-02 19:56:08,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 206. [2022-11-02 19:56:08,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 194 states have (on average 1.2783505154639174) internal successors, (248), 200 states have internal predecessors, (248), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 19:56:08,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 264 transitions. [2022-11-02 19:56:08,801 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 264 transitions. Word has length 66 [2022-11-02 19:56:08,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:08,801 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 264 transitions. [2022-11-02 19:56:08,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:08,802 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 264 transitions. [2022-11-02 19:56:08,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 19:56:08,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:08,804 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, 1, 1, 1, 1] [2022-11-02 19:56:08,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:09,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:09,015 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:09,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:09,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1134939002, now seen corresponding path program 1 times [2022-11-02 19:56:09,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:09,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959067293] [2022-11-02 19:56:09,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:09,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:09,134 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:56:09,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245915947] [2022-11-02 19:56:09,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:09,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:09,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:56:09,144 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:56:09,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 19:56:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:10,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 1587 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:56:10,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:10,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:10,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:10,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959067293] [2022-11-02 19:56:10,285 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:56:10,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245915947] [2022-11-02 19:56:10,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245915947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:10,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:10,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:56:10,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116804033] [2022-11-02 19:56:10,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:10,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:56:10,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:10,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:56:10,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:56:10,287 INFO L87 Difference]: Start difference. First operand 206 states and 264 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:10,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:10,408 INFO L93 Difference]: Finished difference Result 532 states and 686 transitions. [2022-11-02 19:56:10,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:56:10,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 19:56:10,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:10,416 INFO L225 Difference]: With dead ends: 532 [2022-11-02 19:56:10,416 INFO L226 Difference]: Without dead ends: 330 [2022-11-02 19:56:10,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:56:10,417 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 113 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 550 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 [2022-11-02 19:56:10,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 550 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:56:10,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-02 19:56:10,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 312. [2022-11-02 19:56:10,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 300 states have (on average 1.27) internal successors, (381), 306 states have internal predecessors, (381), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 19:56:10,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 397 transitions. [2022-11-02 19:56:10,432 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 397 transitions. Word has length 66 [2022-11-02 19:56:10,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:10,434 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 397 transitions. [2022-11-02 19:56:10,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:10,435 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 397 transitions. [2022-11-02 19:56:10,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-02 19:56:10,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:10,442 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] [2022-11-02 19:56:10,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:10,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:10,663 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:10,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:10,663 INFO L85 PathProgramCache]: Analyzing trace with hash 917413940, now seen corresponding path program 1 times [2022-11-02 19:56:10,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:10,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454091206] [2022-11-02 19:56:10,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:10,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:10,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:56:10,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320512891] [2022-11-02 19:56:10,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:10,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:10,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:56:10,719 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:56:10,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 19:56:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:11,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:56:11,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:11,461 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 19:56:11,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 19:56:11,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 19:56:11,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:11,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:11,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454091206] [2022-11-02 19:56:11,488 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:56:11,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320512891] [2022-11-02 19:56:11,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320512891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:11,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:11,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:11,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349105368] [2022-11-02 19:56:11,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:11,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:11,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:11,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:11,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:11,491 INFO L87 Difference]: Start difference. First operand 312 states and 397 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 19:56:11,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:11,845 INFO L93 Difference]: Finished difference Result 427 states and 554 transitions. [2022-11-02 19:56:11,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:56:11,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2022-11-02 19:56:11,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:11,849 INFO L225 Difference]: With dead ends: 427 [2022-11-02 19:56:11,849 INFO L226 Difference]: Without dead ends: 406 [2022-11-02 19:56:11,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:56:11,850 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 102 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:11,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 674 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:56:11,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-11-02 19:56:11,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 314. [2022-11-02 19:56:11,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 302 states have (on average 1.2682119205298013) internal successors, (383), 308 states have internal predecessors, (383), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 19:56:11,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 399 transitions. [2022-11-02 19:56:11,866 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 399 transitions. Word has length 81 [2022-11-02 19:56:11,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:11,866 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 399 transitions. [2022-11-02 19:56:11,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 19:56:11,867 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 399 transitions. [2022-11-02 19:56:11,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 19:56:11,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:11,868 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] [2022-11-02 19:56:11,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:12,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 19:56:12,095 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:12,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:12,096 INFO L85 PathProgramCache]: Analyzing trace with hash 247470663, now seen corresponding path program 1 times [2022-11-02 19:56:12,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:12,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032016979] [2022-11-02 19:56:12,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:12,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:12,159 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:56:12,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884294017] [2022-11-02 19:56:12,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:12,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:12,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:56:12,161 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:56:12,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 19:56:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:12,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:56:12,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 19:56:12,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:12,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:12,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032016979] [2022-11-02 19:56:12,931 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:56:12,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884294017] [2022-11-02 19:56:12,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884294017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:12,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:12,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:56:12,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720702219] [2022-11-02 19:56:12,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:12,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:56:12,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:12,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:56:12,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:56:12,935 INFO L87 Difference]: Start difference. First operand 314 states and 399 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) [2022-11-02 19:56:13,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:13,022 INFO L93 Difference]: Finished difference Result 521 states and 685 transitions. [2022-11-02 19:56:13,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:56:13,023 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 [2022-11-02 19:56:13,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:13,025 INFO L225 Difference]: With dead ends: 521 [2022-11-02 19:56:13,025 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 19:56:13,026 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 [2022-11-02 19:56:13,027 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 8 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 459 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 [2022-11-02 19:56:13,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 459 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:56:13,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 19:56:13,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 354. [2022-11-02 19:56:13,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 342 states have (on average 1.236842105263158) internal successors, (423), 348 states have internal predecessors, (423), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 19:56:13,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 439 transitions. [2022-11-02 19:56:13,044 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 439 transitions. Word has length 111 [2022-11-02 19:56:13,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:13,044 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 439 transitions. [2022-11-02 19:56:13,045 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) [2022-11-02 19:56:13,045 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 439 transitions. [2022-11-02 19:56:13,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 19:56:13,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:13,046 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] [2022-11-02 19:56:13,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:13,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:13,259 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:13,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:13,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1258587913, now seen corresponding path program 1 times [2022-11-02 19:56:13,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:13,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909055186] [2022-11-02 19:56:13,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:13,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:13,319 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:56:13,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1775067512] [2022-11-02 19:56:13,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:13,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:13,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:56:13,321 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:56:13,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 19:56:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:13,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:56:13,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 19:56:14,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:14,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:14,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909055186] [2022-11-02 19:56:14,024 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:56:14,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775067512] [2022-11-02 19:56:14,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775067512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:14,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:14,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:56:14,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927705386] [2022-11-02 19:56:14,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:14,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:56:14,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:14,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:56:14,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:56:14,031 INFO L87 Difference]: Start difference. First operand 354 states and 439 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 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) [2022-11-02 19:56:14,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:14,134 INFO L93 Difference]: Finished difference Result 536 states and 680 transitions. [2022-11-02 19:56:14,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:56:14,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 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 [2022-11-02 19:56:14,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:14,137 INFO L225 Difference]: With dead ends: 536 [2022-11-02 19:56:14,137 INFO L226 Difference]: Without dead ends: 331 [2022-11-02 19:56:14,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:56:14,139 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 104 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:14,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 802 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:56:14,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-02 19:56:14,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 326. [2022-11-02 19:56:14,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 314 states have (on average 1.213375796178344) internal successors, (381), 320 states have internal predecessors, (381), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 19:56:14,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 397 transitions. [2022-11-02 19:56:14,152 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 397 transitions. Word has length 111 [2022-11-02 19:56:14,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:14,152 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 397 transitions. [2022-11-02 19:56:14,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 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) [2022-11-02 19:56:14,153 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 397 transitions. [2022-11-02 19:56:14,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 19:56:14,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:14,154 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] [2022-11-02 19:56:14,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:14,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 19:56:14,366 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:14,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:14,366 INFO L85 PathProgramCache]: Analyzing trace with hash 100979453, now seen corresponding path program 1 times [2022-11-02 19:56:14,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:14,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358284324] [2022-11-02 19:56:14,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:14,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:14,428 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:56:14,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [778024202] [2022-11-02 19:56:14,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:14,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:14,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:56:14,430 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:56:14,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 19:56:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:15,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:56:15,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 19:56:15,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:15,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:15,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358284324] [2022-11-02 19:56:15,270 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:56:15,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778024202] [2022-11-02 19:56:15,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778024202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:15,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:15,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:15,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102756959] [2022-11-02 19:56:15,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:15,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:15,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:15,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:15,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:15,272 INFO L87 Difference]: Start difference. First operand 326 states and 397 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) [2022-11-02 19:56:15,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:15,768 INFO L93 Difference]: Finished difference Result 720 states and 898 transitions. [2022-11-02 19:56:15,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:56:15,771 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 [2022-11-02 19:56:15,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:15,774 INFO L225 Difference]: With dead ends: 720 [2022-11-02 19:56:15,774 INFO L226 Difference]: Without dead ends: 442 [2022-11-02 19:56:15,775 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 [2022-11-02 19:56:15,776 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 446 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:15,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 508 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 19:56:15,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-11-02 19:56:15,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 410. [2022-11-02 19:56:15,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 398 states have (on average 1.2185929648241205) internal successors, (485), 404 states have internal predecessors, (485), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 19:56:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 501 transitions. [2022-11-02 19:56:15,799 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 501 transitions. Word has length 111 [2022-11-02 19:56:15,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:15,800 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 501 transitions. [2022-11-02 19:56:15,800 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) [2022-11-02 19:56:15,801 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 501 transitions. [2022-11-02 19:56:15,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-02 19:56:15,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:15,802 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] [2022-11-02 19:56:15,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-02 19:56:16,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:16,019 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:16,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:16,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1499063757, now seen corresponding path program 1 times [2022-11-02 19:56:16,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:16,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375162295] [2022-11-02 19:56:16,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:16,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:16,096 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:56:16,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [876491209] [2022-11-02 19:56:16,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:16,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:16,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:56:16,098 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:56:16,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 19:57:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:36,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 19:57:36,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:57:36,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:36,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:57:36,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375162295] [2022-11-02 19:57:36,861 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:57:36,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876491209] [2022-11-02 19:57:36,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876491209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:36,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:36,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:57:36,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297545390] [2022-11-02 19:57:36,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:36,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:57:36,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:57:36,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:57:36,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:57:36,868 INFO L87 Difference]: Start difference. First operand 410 states and 501 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) [2022-11-02 19:57:36,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:36,937 INFO L93 Difference]: Finished difference Result 772 states and 951 transitions. [2022-11-02 19:57:36,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:57:36,938 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 [2022-11-02 19:57:36,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:36,941 INFO L225 Difference]: With dead ends: 772 [2022-11-02 19:57:36,941 INFO L226 Difference]: Without dead ends: 413 [2022-11-02 19:57:36,942 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 [2022-11-02 19:57:36,943 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 2 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 734 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 [2022-11-02 19:57:36,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 734 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:57:36,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-11-02 19:57:36,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2022-11-02 19:57:36,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 400 states have (on average 1.22) internal successors, (488), 407 states have internal predecessors, (488), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-02 19:57:36,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 505 transitions. [2022-11-02 19:57:36,968 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 505 transitions. Word has length 118 [2022-11-02 19:57:36,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:36,968 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 505 transitions. [2022-11-02 19:57:36,969 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) [2022-11-02 19:57:36,969 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 505 transitions. [2022-11-02 19:57:36,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-02 19:57:36,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:36,971 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] [2022-11-02 19:57:37,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:37,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:57:37,187 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:37,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:37,187 INFO L85 PathProgramCache]: Analyzing trace with hash -586883627, now seen corresponding path program 1 times [2022-11-02 19:57:37,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:57:37,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520053292] [2022-11-02 19:57:37,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:37,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:57:37,254 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:57:37,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998149838] [2022-11-02 19:57:37,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:37,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:57:37,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:57:37,256 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:57:37,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 19:59:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:32,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 19:59:32,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 19:59:32,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:32,635 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 19:59:32,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:32,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520053292] [2022-11-02 19:59:32,636 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:59:32,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998149838] [2022-11-02 19:59:32,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998149838] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:32,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:59:32,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 19:59:32,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192906928] [2022-11-02 19:59:32,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:32,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:59:32,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:32,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:59:32,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:59:32,639 INFO L87 Difference]: Start difference. First operand 413 states and 505 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) [2022-11-02 19:59:32,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:32,822 INFO L93 Difference]: Finished difference Result 786 states and 973 transitions. [2022-11-02 19:59:32,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 19:59:32,823 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 [2022-11-02 19:59:32,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:32,825 INFO L225 Difference]: With dead ends: 786 [2022-11-02 19:59:32,826 INFO L226 Difference]: Without dead ends: 422 [2022-11-02 19:59:32,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-11-02 19:59:32,828 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 26 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:32,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 731 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:59:32,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-11-02 19:59:32,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2022-11-02 19:59:32,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 408 states have (on average 1.2254901960784315) internal successors, (500), 415 states have internal predecessors, (500), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (10), 4 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-02 19:59:32,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 518 transitions. [2022-11-02 19:59:32,849 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 518 transitions. Word has length 120 [2022-11-02 19:59:32,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:32,850 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 518 transitions. [2022-11-02 19:59:32,850 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) [2022-11-02 19:59:32,850 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 518 transitions. [2022-11-02 19:59:32,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-02 19:59:32,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:32,852 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] [2022-11-02 19:59:32,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:33,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:33,067 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:33,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:33,068 INFO L85 PathProgramCache]: Analyzing trace with hash 333995379, now seen corresponding path program 2 times [2022-11-02 19:59:33,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:33,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919055279] [2022-11-02 19:59:33,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:33,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:33,133 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:59:33,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442715733] [2022-11-02 19:59:33,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:59:33,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:33,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:33,135 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:33,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 19:59:51,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 19:59:51,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:59:51,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 19:59:51,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:51,952 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 19:59:51,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 19:59:52,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:52,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919055279] [2022-11-02 19:59:52,212 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:59:52,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442715733] [2022-11-02 19:59:52,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442715733] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:52,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:59:52,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2022-11-02 19:59:52,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000976476] [2022-11-02 19:59:52,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:52,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 19:59:52,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:52,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 19:59:52,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-02 19:59:52,215 INFO L87 Difference]: Start difference. First operand 422 states and 518 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) [2022-11-02 19:59:52,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:52,681 INFO L93 Difference]: Finished difference Result 797 states and 986 transitions. [2022-11-02 19:59:52,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:59:52,682 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 [2022-11-02 19:59:52,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:52,685 INFO L225 Difference]: With dead ends: 797 [2022-11-02 19:59:52,685 INFO L226 Difference]: Without dead ends: 428 [2022-11-02 19:59:52,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:59:52,687 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 20 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:52,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1915 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:59:52,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-11-02 19:59:52,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 426. [2022-11-02 19:59:52,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 412 states have (on average 1.2281553398058251) internal successors, (506), 419 states have internal predecessors, (506), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-02 19:59:52,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 523 transitions. [2022-11-02 19:59:52,713 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 523 transitions. Word has length 124 [2022-11-02 19:59:52,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:52,714 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 523 transitions. [2022-11-02 19:59:52,714 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) [2022-11-02 19:59:52,714 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 523 transitions. [2022-11-02 19:59:52,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-02 19:59:52,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:52,716 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] [2022-11-02 19:59:52,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:52,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:52,917 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:52,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:52,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1707706867, now seen corresponding path program 3 times [2022-11-02 19:59:52,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:52,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668245659] [2022-11-02 19:59:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:52,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:52,980 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:59:52,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015762958] [2022-11-02 19:59:52,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 19:59:52,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:52,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:52,982 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:53,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dc25ea-00b5-4ce5-8a7e-bc3c5ea8c258/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process