./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.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_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/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_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/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_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/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 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 --- 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 20:23:33,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:23:33,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:23:33,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:23:33,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:23:33,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:23:33,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:23:33,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:23:33,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:23:33,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:23:33,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:23:33,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:23:33,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:23:33,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:23:33,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:23:33,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:23:33,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:23:33,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:23:33,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:23:33,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:23:33,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:23:33,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:23:33,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:23:33,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:23:33,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:23:33,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:23:33,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:23:33,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:23:33,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:23:33,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:23:33,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:23:33,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:23:33,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:23:33,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:23:33,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:23:33,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:23:33,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:23:33,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:23:33,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:23:33,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:23:33,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:23:33,102 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:23:33,127 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:23:33,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:23:33,128 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:23:33,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:23:33,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:23:33,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:23:33,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:23:33,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:23:33,131 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:23:33,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:23:33,132 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:23:33,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:23:33,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:23:33,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:23:33,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:23:33,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:23:33,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:23:33,134 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:23:33,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:23:33,135 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:23:33,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:23:33,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:23:33,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:23:33,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:23:33,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:23:33,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:23:33,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:23:33,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:23:33,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:23:33,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:23:33,139 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:23:33,139 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:23:33,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:23:33,140 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_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 [2022-11-02 20:23:33,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:23:33,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:23:33,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:23:33,516 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:23:33,517 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:23:33,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2022-11-02 20:23:33,583 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/data/b260f7f57/a7572c8e8c02484ba3c152c5065c5c3f/FLAGbaca9ce38 [2022-11-02 20:23:34,163 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:23:34,163 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2022-11-02 20:23:34,183 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/data/b260f7f57/a7572c8e8c02484ba3c152c5065c5c3f/FLAGbaca9ce38 [2022-11-02 20:23:34,418 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/data/b260f7f57/a7572c8e8c02484ba3c152c5065c5c3f [2022-11-02 20:23:34,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:23:34,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:23:34,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:23:34,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:23:34,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:23:34,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:23:34" (1/1) ... [2022-11-02 20:23:34,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3e951e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:23:34, skipping insertion in model container [2022-11-02 20:23:34,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:23:34" (1/1) ... [2022-11-02 20:23:34,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:23:34,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:23:35,372 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_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44118,44131] [2022-11-02 20:23:35,397 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_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44660,44673] [2022-11-02 20:23:35,564 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_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56247,56260] [2022-11-02 20:23:35,566 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_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56368,56381] [2022-11-02 20:23:35,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:23:35,586 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:23:35,654 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_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44118,44131] [2022-11-02 20:23:35,657 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_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44660,44673] [2022-11-02 20:23:35,739 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_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56247,56260] [2022-11-02 20:23:35,741 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_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56368,56381] [2022-11-02 20:23:35,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:23:35,820 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:23:35,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:23:35 WrapperNode [2022-11-02 20:23:35,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:23:35,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:23:35,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:23:35,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:23:35,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:23:35" (1/1) ... [2022-11-02 20:23:35,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:23:35" (1/1) ... [2022-11-02 20:23:36,032 INFO L138 Inliner]: procedures = 282, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1040 [2022-11-02 20:23:36,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:23:36,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:23:36,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:23:36,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:23:36,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:23:35" (1/1) ... [2022-11-02 20:23:36,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:23:35" (1/1) ... [2022-11-02 20:23:36,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:23:35" (1/1) ... [2022-11-02 20:23:36,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:23:35" (1/1) ... [2022-11-02 20:23:36,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:23:35" (1/1) ... [2022-11-02 20:23:36,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:23:35" (1/1) ... [2022-11-02 20:23:36,216 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:23:35" (1/1) ... [2022-11-02 20:23:36,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:23:35" (1/1) ... [2022-11-02 20:23:36,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:23:36,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:23:36,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:23:36,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:23:36,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:23:35" (1/1) ... [2022-11-02 20:23:36,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:23:36,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:23:36,304 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:23:36,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:23:36,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:23:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-02 20:23:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:23:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:23:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-11-02 20:23:36,380 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-11-02 20:23:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:23:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 20:23:36,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 20:23:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:23:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:23:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:23:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-11-02 20:23:36,382 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-11-02 20:23:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:23:36,382 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-11-02 20:23:36,383 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-11-02 20:23:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:23:36,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:23:36,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:23:36,761 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:23:36,764 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:23:38,564 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:23:38,572 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:23:38,572 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-02 20:23:38,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:23:38 BoogieIcfgContainer [2022-11-02 20:23:38,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:23:38,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:23:38,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:23:38,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:23:38,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:23:34" (1/3) ... [2022-11-02 20:23:38,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2b1ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:23:38, skipping insertion in model container [2022-11-02 20:23:38,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:23:35" (2/3) ... [2022-11-02 20:23:38,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2b1ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:23:38, skipping insertion in model container [2022-11-02 20:23:38,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:23:38" (3/3) ... [2022-11-02 20:23:38,584 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test6-1.i [2022-11-02 20:23:38,603 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:23:38,603 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-02 20:23:38,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:23:38,675 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;@7aa53b3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:23:38,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:23:38,682 INFO L276 IsEmpty]: Start isEmpty. Operand has 225 states, 203 states have (on average 1.6354679802955665) internal successors, (332), 207 states have internal predecessors, (332), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-02 20:23:38,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:23:38,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:23:38,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:23:38,692 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:23:38,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:23:38,700 INFO L85 PathProgramCache]: Analyzing trace with hash -720802776, now seen corresponding path program 1 times [2022-11-02 20:23:38,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:23:38,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475886825] [2022-11-02 20:23:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:38,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:23:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:23:38,889 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 20:23:38,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:23:38,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475886825] [2022-11-02 20:23:38,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475886825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:23:38,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:23:38,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:23:38,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876938279] [2022-11-02 20:23:38,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:23:38,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:23:38,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:23:38,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:23:38,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:23:38,935 INFO L87 Difference]: Start difference. First operand has 225 states, 203 states have (on average 1.6354679802955665) internal successors, (332), 207 states have internal predecessors, (332), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:23:38,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:23:38,993 INFO L93 Difference]: Finished difference Result 445 states and 724 transitions. [2022-11-02 20:23:38,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:23:38,998 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:23:38,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:23:39,013 INFO L225 Difference]: With dead ends: 445 [2022-11-02 20:23:39,014 INFO L226 Difference]: Without dead ends: 218 [2022-11-02 20:23:39,023 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 20:23:39,028 INFO L413 NwaCegarLoop]: 285 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, 285 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 20:23:39,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:23:39,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-02 20:23:39,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2022-11-02 20:23:39,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 197 states have (on average 1.299492385786802) internal successors, (256), 202 states have internal predecessors, (256), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-02 20:23:39,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 281 transitions. [2022-11-02 20:23:39,101 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 281 transitions. Word has length 8 [2022-11-02 20:23:39,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:23:39,102 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 281 transitions. [2022-11-02 20:23:39,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:23:39,102 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 281 transitions. [2022-11-02 20:23:39,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:23:39,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:23:39,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:23:39,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:23:39,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:23:39,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:23:39,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1810590275, now seen corresponding path program 1 times [2022-11-02 20:23:39,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:23:39,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587444226] [2022-11-02 20:23:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:39,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:23:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:23:39,428 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 20:23:39,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:23:39,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587444226] [2022-11-02 20:23:39,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587444226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:23:39,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:23:39,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:23:39,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956656744] [2022-11-02 20:23:39,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:23:39,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:23:39,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:23:39,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:23:39,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:23:39,437 INFO L87 Difference]: Start difference. First operand 218 states and 281 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:23:40,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:23:40,023 INFO L93 Difference]: Finished difference Result 455 states and 590 transitions. [2022-11-02 20:23:40,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:23:40,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 20:23:40,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:23:40,027 INFO L225 Difference]: With dead ends: 455 [2022-11-02 20:23:40,027 INFO L226 Difference]: Without dead ends: 346 [2022-11-02 20:23:40,028 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 20:23:40,029 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 152 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:23:40,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 711 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:23:40,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-11-02 20:23:40,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 220. [2022-11-02 20:23:40,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 199 states have (on average 1.2964824120603016) internal successors, (258), 204 states have internal predecessors, (258), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-02 20:23:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 283 transitions. [2022-11-02 20:23:40,056 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 283 transitions. Word has length 10 [2022-11-02 20:23:40,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:23:40,056 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 283 transitions. [2022-11-02 20:23:40,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:23:40,057 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 283 transitions. [2022-11-02 20:23:40,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 20:23:40,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:23:40,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:40,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:23:40,066 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:23:40,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:23:40,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1082818915, now seen corresponding path program 1 times [2022-11-02 20:23:40,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:23:40,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723653000] [2022-11-02 20:23:40,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:40,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:23:40,165 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:23:40,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115639221] [2022-11-02 20:23:40,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:40,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:40,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:23:40,174 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:23:40,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:23:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:23:40,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:23:40,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:23:40,594 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 20:23:40,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:23:40,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:23:40,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723653000] [2022-11-02 20:23:40,622 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:23:40,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115639221] [2022-11-02 20:23:40,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115639221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:23:40,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:23:40,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:23:40,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474880230] [2022-11-02 20:23:40,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:23:40,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:23:40,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:23:40,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:23:40,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:23:40,626 INFO L87 Difference]: Start difference. First operand 220 states and 283 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:23:40,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:23:40,753 INFO L93 Difference]: Finished difference Result 457 states and 593 transitions. [2022-11-02 20:23:40,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:23:40,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-11-02 20:23:40,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:23:40,756 INFO L225 Difference]: With dead ends: 457 [2022-11-02 20:23:40,757 INFO L226 Difference]: Without dead ends: 241 [2022-11-02 20:23:40,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 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 20:23:40,759 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 9 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 507 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 20:23:40,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 507 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:23:40,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-02 20:23:40,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2022-11-02 20:23:40,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 219 states have (on average 1.269406392694064) internal successors, (278), 224 states have internal predecessors, (278), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-02 20:23:40,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 303 transitions. [2022-11-02 20:23:40,806 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 303 transitions. Word has length 47 [2022-11-02 20:23:40,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:23:40,807 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 303 transitions. [2022-11-02 20:23:40,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:23:40,807 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 303 transitions. [2022-11-02 20:23:40,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 20:23:40,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:23:40,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:40,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:23:41,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:41,039 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:23:41,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:23:41,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1223367525, now seen corresponding path program 1 times [2022-11-02 20:23:41,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:23:41,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246388181] [2022-11-02 20:23:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:41,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:23:41,091 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:23:41,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705874429] [2022-11-02 20:23:41,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:41,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:41,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:23:41,094 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:23:41,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:23:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:23:41,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:23:41,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:23:41,478 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 20:23:41,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:23:41,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:23:41,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246388181] [2022-11-02 20:23:41,479 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:23:41,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705874429] [2022-11-02 20:23:41,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705874429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:23:41,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:23:41,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:23:41,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945368241] [2022-11-02 20:23:41,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:23:41,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:23:41,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:23:41,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:23:41,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:23:41,483 INFO L87 Difference]: Start difference. First operand 240 states and 303 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:23:41,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:23:41,598 INFO L93 Difference]: Finished difference Result 469 states and 595 transitions. [2022-11-02 20:23:41,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:23:41,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-11-02 20:23:41,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:23:41,601 INFO L225 Difference]: With dead ends: 469 [2022-11-02 20:23:41,601 INFO L226 Difference]: Without dead ends: 233 [2022-11-02 20:23:41,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 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 20:23:41,603 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 223 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 556 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 20:23:41,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 556 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:23:41,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-11-02 20:23:41,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 226. [2022-11-02 20:23:41,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 205 states have (on average 1.2536585365853659) internal successors, (257), 210 states have internal predecessors, (257), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-02 20:23:41,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 282 transitions. [2022-11-02 20:23:41,619 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 282 transitions. Word has length 47 [2022-11-02 20:23:41,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:23:41,620 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 282 transitions. [2022-11-02 20:23:41,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:23:41,620 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 282 transitions. [2022-11-02 20:23:41,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 20:23:41,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:23:41,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:41,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:23:41,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:41,837 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:23:41,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:23:41,838 INFO L85 PathProgramCache]: Analyzing trace with hash 206381993, now seen corresponding path program 1 times [2022-11-02 20:23:41,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:23:41,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488064429] [2022-11-02 20:23:41,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:41,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:23:41,872 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:23:41,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [972198521] [2022-11-02 20:23:41,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:41,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:41,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:23:41,875 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:23:41,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:23:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:23:42,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:23:42,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:23:42,971 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 20:23:42,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:23:42,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:23:42,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488064429] [2022-11-02 20:23:42,972 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:23:42,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972198521] [2022-11-02 20:23:42,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972198521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:23:42,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:23:42,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:23:42,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025229220] [2022-11-02 20:23:42,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:23:42,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:23:42,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:23:42,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:23:42,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:23:42,975 INFO L87 Difference]: Start difference. First operand 226 states and 282 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:23:43,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:23:43,035 INFO L93 Difference]: Finished difference Result 238 states and 294 transitions. [2022-11-02 20:23:43,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:23:43,036 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-11-02 20:23:43,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:23:43,037 INFO L225 Difference]: With dead ends: 238 [2022-11-02 20:23:43,037 INFO L226 Difference]: Without dead ends: 236 [2022-11-02 20:23:43,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:23:43,039 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 13 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:23:43,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1336 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:23:43,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-02 20:23:43,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-11-02 20:23:43,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 212 states have (on average 1.25) internal successors, (265), 218 states have internal predecessors, (265), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:23:43,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 292 transitions. [2022-11-02 20:23:43,049 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 292 transitions. Word has length 47 [2022-11-02 20:23:43,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:23:43,049 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 292 transitions. [2022-11-02 20:23:43,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:23:43,050 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 292 transitions. [2022-11-02 20:23:43,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 20:23:43,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:23:43,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:43,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:23:43,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:43,278 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:23:43,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:23:43,279 INFO L85 PathProgramCache]: Analyzing trace with hash -806940807, now seen corresponding path program 1 times [2022-11-02 20:23:43,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:23:43,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211590178] [2022-11-02 20:23:43,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:43,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:23:43,402 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:23:43,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1233527482] [2022-11-02 20:23:43,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:43,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:43,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:23:43,404 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:23:43,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:23:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:23:44,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:23:44,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:23:44,108 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 20:23:44,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:23:44,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:23:44,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211590178] [2022-11-02 20:23:44,109 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:23:44,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233527482] [2022-11-02 20:23:44,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233527482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:23:44,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:23:44,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:23:44,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202970222] [2022-11-02 20:23:44,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:23:44,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:23:44,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:23:44,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:23:44,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:23:44,112 INFO L87 Difference]: Start difference. First operand 236 states and 292 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:23:44,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:23:44,135 INFO L93 Difference]: Finished difference Result 469 states and 582 transitions. [2022-11-02 20:23:44,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:23:44,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-02 20:23:44,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:23:44,138 INFO L225 Difference]: With dead ends: 469 [2022-11-02 20:23:44,138 INFO L226 Difference]: Without dead ends: 237 [2022-11-02 20:23:44,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 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 20:23:44,139 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 0 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:23:44,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 541 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:23:44,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-02 20:23:44,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-11-02 20:23:44,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 213 states have (on average 1.2488262910798122) internal successors, (266), 219 states have internal predecessors, (266), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:23:44,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 293 transitions. [2022-11-02 20:23:44,149 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 293 transitions. Word has length 58 [2022-11-02 20:23:44,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:23:44,150 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 293 transitions. [2022-11-02 20:23:44,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:23:44,150 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 293 transitions. [2022-11-02 20:23:44,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 20:23:44,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:23:44,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:44,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:23:44,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:44,372 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:23:44,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:23:44,372 INFO L85 PathProgramCache]: Analyzing trace with hash -413913797, now seen corresponding path program 1 times [2022-11-02 20:23:44,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:23:44,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575142312] [2022-11-02 20:23:44,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:44,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:23:44,504 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:23:44,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1540826247] [2022-11-02 20:23:44,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:44,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:44,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:23:44,506 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:23:44,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:23:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:23:45,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:23:45,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:23:45,684 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 20:23:45,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:23:45,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:23:45,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575142312] [2022-11-02 20:23:45,685 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:23:45,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540826247] [2022-11-02 20:23:45,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540826247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:23:45,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:23:45,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:23:45,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124298399] [2022-11-02 20:23:45,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:23:45,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:23:45,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:23:45,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:23:45,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:23:45,697 INFO L87 Difference]: Start difference. First operand 237 states and 293 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:23:45,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:23:45,851 INFO L93 Difference]: Finished difference Result 592 states and 736 transitions. [2022-11-02 20:23:45,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:23:45,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-02 20:23:45,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:23:45,855 INFO L225 Difference]: With dead ends: 592 [2022-11-02 20:23:45,855 INFO L226 Difference]: Without dead ends: 359 [2022-11-02 20:23:45,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 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 20:23:45,857 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 106 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:23:45,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 562 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:23:45,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-02 20:23:45,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 345. [2022-11-02 20:23:45,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 321 states have (on average 1.249221183800623) internal successors, (401), 327 states have internal predecessors, (401), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:23:45,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 428 transitions. [2022-11-02 20:23:45,881 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 428 transitions. Word has length 58 [2022-11-02 20:23:45,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:23:45,881 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 428 transitions. [2022-11-02 20:23:45,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:23:45,882 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 428 transitions. [2022-11-02 20:23:45,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-02 20:23:45,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:23:45,884 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:23:45,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:23:46,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:46,106 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:23:46,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:23:46,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1298801861, now seen corresponding path program 1 times [2022-11-02 20:23:46,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:23:46,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591987651] [2022-11-02 20:23:46,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:46,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:23:46,161 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:23:46,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [760123164] [2022-11-02 20:23:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:46,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:46,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:23:46,163 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:23:46,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:23:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:23:46,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:23:46,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:23:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:23:46,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:23:47,278 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 20:23:47,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:23:47,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591987651] [2022-11-02 20:23:47,278 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:23:47,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760123164] [2022-11-02 20:23:47,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760123164] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:23:47,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:23:47,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 9 [2022-11-02 20:23:47,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248258450] [2022-11-02 20:23:47,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:23:47,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:23:47,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:23:47,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:23:47,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:23:47,281 INFO L87 Difference]: Start difference. First operand 345 states and 428 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:23:47,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:23:47,483 INFO L93 Difference]: Finished difference Result 1228 states and 1566 transitions. [2022-11-02 20:23:47,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:23:47,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2022-11-02 20:23:47,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:23:47,491 INFO L225 Difference]: With dead ends: 1228 [2022-11-02 20:23:47,491 INFO L226 Difference]: Without dead ends: 932 [2022-11-02 20:23:47,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 111 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:23:47,493 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 858 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:23:47,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 1201 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:23:47,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2022-11-02 20:23:47,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 573. [2022-11-02 20:23:47,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 544 states have (on average 1.2610294117647058) internal successors, (686), 550 states have internal predecessors, (686), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-02 20:23:47,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 718 transitions. [2022-11-02 20:23:47,536 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 718 transitions. Word has length 62 [2022-11-02 20:23:47,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:23:47,536 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 718 transitions. [2022-11-02 20:23:47,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:23:47,537 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 718 transitions. [2022-11-02 20:23:47,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-02 20:23:47,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:23:47,539 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:47,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:23:47,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:47,766 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:23:47,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:23:47,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1545086991, now seen corresponding path program 1 times [2022-11-02 20:23:47,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:23:47,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184792257] [2022-11-02 20:23:47,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:47,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:23:47,825 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:23:47,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147323904] [2022-11-02 20:23:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:47,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:47,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:23:47,827 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:23:47,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:23:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:23:48,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:23:48,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:23:48,687 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:23:48,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:23:48,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:23:48,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184792257] [2022-11-02 20:23:48,688 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:23:48,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147323904] [2022-11-02 20:23:48,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147323904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:23:48,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:23:48,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:23:48,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820355695] [2022-11-02 20:23:48,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:23:48,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:23:48,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:23:48,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:23:48,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:23:48,691 INFO L87 Difference]: Start difference. First operand 573 states and 718 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:23:48,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:23:48,820 INFO L93 Difference]: Finished difference Result 1078 states and 1360 transitions. [2022-11-02 20:23:48,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:23:48,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 93 [2022-11-02 20:23:48,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:23:48,825 INFO L225 Difference]: With dead ends: 1078 [2022-11-02 20:23:48,825 INFO L226 Difference]: Without dead ends: 573 [2022-11-02 20:23:48,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:23:48,829 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 25 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:23:48,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 991 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:23:48,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-11-02 20:23:48,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2022-11-02 20:23:48,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 544 states have (on average 1.2610294117647058) internal successors, (686), 550 states have internal predecessors, (686), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-02 20:23:48,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 717 transitions. [2022-11-02 20:23:48,856 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 717 transitions. Word has length 93 [2022-11-02 20:23:48,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:23:48,857 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 717 transitions. [2022-11-02 20:23:48,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:23:48,858 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 717 transitions. [2022-11-02 20:23:48,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 20:23:48,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:23:48,864 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:48,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:23:49,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:49,082 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:23:49,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:23:49,082 INFO L85 PathProgramCache]: Analyzing trace with hash -441690957, now seen corresponding path program 1 times [2022-11-02 20:23:49,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:23:49,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685632560] [2022-11-02 20:23:49,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:49,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:23:49,133 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:23:49,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [711451987] [2022-11-02 20:23:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:49,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:49,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:23:49,135 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:23:49,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:23:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:23:49,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:23:49,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:23:49,789 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 20:23:49,802 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 20:23:49,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:23:49,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:23:49,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:23:49,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685632560] [2022-11-02 20:23:49,808 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:23:49,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711451987] [2022-11-02 20:23:49,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711451987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:23:49,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:23:49,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:23:49,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255361501] [2022-11-02 20:23:49,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:23:49,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:23:49,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:23:49,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:23:49,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:23:49,810 INFO L87 Difference]: Start difference. First operand 573 states and 717 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-02 20:23:50,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:23:50,165 INFO L93 Difference]: Finished difference Result 779 states and 994 transitions. [2022-11-02 20:23:50,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:23:50,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 98 [2022-11-02 20:23:50,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:23:50,170 INFO L225 Difference]: With dead ends: 779 [2022-11-02 20:23:50,170 INFO L226 Difference]: Without dead ends: 766 [2022-11-02 20:23:50,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 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 20:23:50,171 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 107 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:23:50,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 720 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:23:50,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-11-02 20:23:50,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 577. [2022-11-02 20:23:50,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 548 states have (on average 1.2591240875912408) internal successors, (690), 554 states have internal predecessors, (690), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-02 20:23:50,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 721 transitions. [2022-11-02 20:23:50,200 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 721 transitions. Word has length 98 [2022-11-02 20:23:50,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:23:50,200 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 721 transitions. [2022-11-02 20:23:50,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-02 20:23:50,201 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 721 transitions. [2022-11-02 20:23:50,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 20:23:50,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:23:50,202 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:23:50,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-02 20:23:50,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:23:50,416 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:23:50,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:23:50,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1451857612, now seen corresponding path program 1 times [2022-11-02 20:23:50,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:23:50,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284038578] [2022-11-02 20:23:50,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:50,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:23:50,508 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:23:50,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12736432] [2022-11-02 20:23:50,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:50,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:50,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:23:50,510 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:23:50,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:23:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:23:51,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:23:51,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:23:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:23:51,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:23:51,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:23:51,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284038578] [2022-11-02 20:23:51,663 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:23:51,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12736432] [2022-11-02 20:23:51,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12736432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:23:51,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:23:51,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:23:51,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316089677] [2022-11-02 20:23:51,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:23:51,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:23:51,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:23:51,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:23:51,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:23:51,667 INFO L87 Difference]: Start difference. First operand 577 states and 721 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 20:23:51,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:23:51,895 INFO L93 Difference]: Finished difference Result 1094 states and 1379 transitions. [2022-11-02 20:23:51,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:23:51,896 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 110 [2022-11-02 20:23:51,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:23:51,900 INFO L225 Difference]: With dead ends: 1094 [2022-11-02 20:23:51,900 INFO L226 Difference]: Without dead ends: 582 [2022-11-02 20:23:51,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:23:51,902 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 18 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:23:51,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1788 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:23:51,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2022-11-02 20:23:51,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2022-11-02 20:23:51,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 552 states have (on average 1.2590579710144927) internal successors, (695), 559 states have internal predecessors, (695), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-02 20:23:51,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 727 transitions. [2022-11-02 20:23:51,950 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 727 transitions. Word has length 110 [2022-11-02 20:23:51,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:23:51,950 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 727 transitions. [2022-11-02 20:23:51,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 20:23:51,951 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 727 transitions. [2022-11-02 20:23:51,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 20:23:51,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:23:51,953 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:23:52,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:23:52,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 20:23:52,182 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:23:52,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:23:52,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1710945854, now seen corresponding path program 1 times [2022-11-02 20:23:52,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:23:52,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913940992] [2022-11-02 20:23:52,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:52,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:23:52,283 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:23:52,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1356975505] [2022-11-02 20:23:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:52,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:52,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:23:52,285 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:23:52,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:23:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:23:53,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:23:53,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:23:53,655 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:23:53,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:23:53,935 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:23:53,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:23:53,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913940992] [2022-11-02 20:23:53,936 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:23:53,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356975505] [2022-11-02 20:23:53,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356975505] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:23:53,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:23:53,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2022-11-02 20:23:53,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836717166] [2022-11-02 20:23:53,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:23:53,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:23:53,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:23:53,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:23:53,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:23:53,940 INFO L87 Difference]: Start difference. First operand 582 states and 727 transitions. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-02 20:23:54,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:23:54,393 INFO L93 Difference]: Finished difference Result 1117 states and 1411 transitions. [2022-11-02 20:23:54,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:23:54,394 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 112 [2022-11-02 20:23:54,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:23:54,398 INFO L225 Difference]: With dead ends: 1117 [2022-11-02 20:23:54,398 INFO L226 Difference]: Without dead ends: 598 [2022-11-02 20:23:54,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:23:54,400 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 32 mSDsluCounter, 2042 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:23:54,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 2303 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:23:54,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-11-02 20:23:54,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 595. [2022-11-02 20:23:54,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 564 states have (on average 1.2641843971631206) internal successors, (713), 571 states have internal predecessors, (713), 16 states have call successors, (16), 10 states have call predecessors, (16), 11 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-02 20:23:54,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 745 transitions. [2022-11-02 20:23:54,436 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 745 transitions. Word has length 112 [2022-11-02 20:23:54,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:23:54,437 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 745 transitions. [2022-11-02 20:23:54,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-02 20:23:54,438 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 745 transitions. [2022-11-02 20:23:54,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 20:23:54,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:23:54,440 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:23:54,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:23:54,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:23:54,654 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:23:54,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:23:54,654 INFO L85 PathProgramCache]: Analyzing trace with hash 2135958996, now seen corresponding path program 2 times [2022-11-02 20:23:54,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:23:54,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179795944] [2022-11-02 20:23:54,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:54,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:23:54,714 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:23:54,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373750726] [2022-11-02 20:23:54,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:23:54,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:23:54,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:23:54,715 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:23:54,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:24:19,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:24:19,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:24:19,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 20:24:19,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:19,606 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 38 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 20:24:19,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:24:20,005 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 20:24:20,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:20,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179795944] [2022-11-02 20:24:20,009 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:24:20,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373750726] [2022-11-02 20:24:20,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373750726] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:24:20,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:24:20,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2022-11-02 20:24:20,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229441245] [2022-11-02 20:24:20,010 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:24:20,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:24:20,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:20,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:24:20,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:24:20,012 INFO L87 Difference]: Start difference. First operand 595 states and 745 transitions. Second operand has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-02 20:24:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:22,120 INFO L93 Difference]: Finished difference Result 1210 states and 1528 transitions. [2022-11-02 20:24:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:24:22,122 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2022-11-02 20:24:22,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:22,125 INFO L225 Difference]: With dead ends: 1210 [2022-11-02 20:24:22,126 INFO L226 Difference]: Without dead ends: 613 [2022-11-02 20:24:22,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=275, Invalid=915, Unknown=0, NotChecked=0, Total=1190 [2022-11-02 20:24:22,129 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 288 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 3080 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:22,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 3080 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:24:22,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-11-02 20:24:22,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 601. [2022-11-02 20:24:22,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 570 states have (on average 1.2614035087719297) internal successors, (719), 577 states have internal predecessors, (719), 16 states have call successors, (16), 10 states have call predecessors, (16), 11 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-02 20:24:22,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 751 transitions. [2022-11-02 20:24:22,170 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 751 transitions. Word has length 116 [2022-11-02 20:24:22,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:22,171 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 751 transitions. [2022-11-02 20:24:22,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-02 20:24:22,171 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 751 transitions. [2022-11-02 20:24:22,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-02 20:24:22,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:22,173 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 20:24:22,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:22,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:24:22,390 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-02 20:24:22,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:22,391 INFO L85 PathProgramCache]: Analyzing trace with hash -224218713, now seen corresponding path program 3 times [2022-11-02 20:24:22,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:22,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393126216] [2022-11-02 20:24:22,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:22,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:22,502 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:24:22,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393021424] [2022-11-02 20:24:22,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:24:22,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:22,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:22,504 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:24:22,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5fcad44-2eb0-4fbd-b711-c2a2e40ca0b7/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process