./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 64bit --witnessprinter.graph.data.programhash 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:24:51,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:24:51,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:24:51,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:24:51,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:24:51,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:24:51,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:24:51,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:24:51,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:24:51,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:24:51,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:24:51,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:24:51,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:24:51,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:24:51,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:24:51,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:24:51,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:24:51,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:24:51,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:24:51,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:24:51,121 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:24:51,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:24:51,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:24:51,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:24:51,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:24:51,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:24:51,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:24:51,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:24:51,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:24:51,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:24:51,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:24:51,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:24:51,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:24:51,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:24:51,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:24:51,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:24:51,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:24:51,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:24:51,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:24:51,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:24:51,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:24:51,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:24:51,144 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:24:51,169 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:24:51,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:24:51,170 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:24:51,170 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:24:51,170 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:24:51,170 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:24:51,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:24:51,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:24:51,171 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:24:51,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:24:51,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:24:51,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:24:51,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:24:51,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:24:51,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:24:51,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:24:51,180 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:24:51,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:24:51,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:24:51,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:24:51,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:24:51,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:24:51,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:24:51,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:24:51,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:24:51,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:24:51,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:24:51,182 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:24:51,182 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:24:51,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:24:51,183 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 [2022-07-21 09:24:51,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:24:51,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:24:51,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:24:51,478 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:24:51,479 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:24:51,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2022-07-21 09:24:51,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa8821e47/56dd7bb0f1154d87905e9e4a78e035bd/FLAGc067143d5 [2022-07-21 09:24:52,119 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:24:52,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2022-07-21 09:24:52,148 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa8821e47/56dd7bb0f1154d87905e9e4a78e035bd/FLAGc067143d5 [2022-07-21 09:24:52,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa8821e47/56dd7bb0f1154d87905e9e4a78e035bd [2022-07-21 09:24:52,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:24:52,283 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:24:52,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:24:52,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:24:52,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:24:52,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:24:52" (1/1) ... [2022-07-21 09:24:52,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24dcec6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:52, skipping insertion in model container [2022-07-21 09:24:52,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:24:52" (1/1) ... [2022-07-21 09:24:52,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:24:52,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:24:52,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2022-07-21 09:24:52,584 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2022-07-21 09:24:53,014 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:24:53,075 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,075 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,076 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,079 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,082 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,090 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,094 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,095 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,096 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,097 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,098 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,098 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,099 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,309 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:24:53,309 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:24:53,310 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:24:53,311 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:24:53,312 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:24:53,312 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:24:53,314 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:24:53,315 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:24:53,316 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:24:53,316 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:24:53,443 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,457 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:24:53,527 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:24:53,551 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2022-07-21 09:24:53,552 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2022-07-21 09:24:53,585 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:24:53,597 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,598 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,598 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,598 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,599 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,605 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,605 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,606 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,606 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,607 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,607 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,607 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,608 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,664 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:24:53,664 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:24:53,665 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:24:53,665 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:24:53,666 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:24:53,667 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:24:53,667 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:24:53,667 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:24:53,671 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:24:53,671 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:24:53,698 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,704 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:24:53,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:24:53,939 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:24:53,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:53 WrapperNode [2022-07-21 09:24:53,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:24:53,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:24:53,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:24:53,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:24:53,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:53" (1/1) ... [2022-07-21 09:24:54,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:53" (1/1) ... [2022-07-21 09:24:54,062 INFO L137 Inliner]: procedures = 691, calls = 1684, calls flagged for inlining = 51, calls inlined = 10, statements flattened = 684 [2022-07-21 09:24:54,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:24:54,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:24:54,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:24:54,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:24:54,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:53" (1/1) ... [2022-07-21 09:24:54,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:53" (1/1) ... [2022-07-21 09:24:54,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:53" (1/1) ... [2022-07-21 09:24:54,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:53" (1/1) ... [2022-07-21 09:24:54,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:53" (1/1) ... [2022-07-21 09:24:54,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:53" (1/1) ... [2022-07-21 09:24:54,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:53" (1/1) ... [2022-07-21 09:24:54,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:24:54,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:24:54,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:24:54,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:24:54,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:53" (1/1) ... [2022-07-21 09:24:54,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:24:54,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:24:54,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 09:24:54,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 09:24:54,217 INFO L130 BoogieDeclarations]: Found specification of procedure memmove_impl [2022-07-21 09:24:54,217 INFO L138 BoogieDeclarations]: Found implementation of procedure memmove_impl [2022-07-21 09:24:54,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:24:54,218 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-21 09:24:54,218 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-21 09:24:54,219 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-21 09:24:54,219 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-21 09:24:54,219 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-21 09:24:54,219 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-21 09:24:54,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:24:54,219 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-21 09:24:54,219 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-21 09:24:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:24:54,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:24:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:24:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:24:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:24:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:24:54,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:24:54,221 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-21 09:24:54,221 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-21 09:24:54,221 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-21 09:24:54,221 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-21 09:24:54,222 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-21 09:24:54,222 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-21 09:24:54,222 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-21 09:24:54,222 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-21 09:24:54,222 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:24:54,222 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:24:54,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:24:54,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:24:54,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:24:54,223 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-21 09:24:54,223 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-21 09:24:54,223 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-21 09:24:54,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-21 09:24:54,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:24:54,223 INFO L130 BoogieDeclarations]: Found specification of procedure my_memmove [2022-07-21 09:24:54,223 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memmove [2022-07-21 09:24:54,224 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_front [2022-07-21 09:24:54,224 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_front [2022-07-21 09:24:54,224 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-21 09:24:54,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-21 09:24:54,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:24:54,465 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:24:54,468 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:24:55,039 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:24:55,049 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:24:55,049 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 09:24:55,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:24:55 BoogieIcfgContainer [2022-07-21 09:24:55,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:24:55,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:24:55,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:24:55,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:24:55,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:24:52" (1/3) ... [2022-07-21 09:24:55,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d881f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:24:55, skipping insertion in model container [2022-07-21 09:24:55,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:24:53" (2/3) ... [2022-07-21 09:24:55,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d881f64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:24:55, skipping insertion in model container [2022-07-21 09:24:55,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:24:55" (3/3) ... [2022-07-21 09:24:55,059 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_front_harness.i [2022-07-21 09:24:55,070 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:24:55,071 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:24:55,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:24:55,121 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@42241ddc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@c211ace [2022-07-21 09:24:55,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 09:24:55,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 110 states have (on average 1.2) internal successors, (132), 111 states have internal predecessors, (132), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-07-21 09:24:55,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 09:24:55,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:24:55,137 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:24:55,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:24:55,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:24:55,140 INFO L85 PathProgramCache]: Analyzing trace with hash 928387541, now seen corresponding path program 1 times [2022-07-21 09:24:55,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:24:55,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051810970] [2022-07-21 09:24:55,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:55,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:24:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:55,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:24:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:55,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:24:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:55,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:24:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:55,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:24:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:55,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:24:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:55,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:24:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:55,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:24:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:55,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:24:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:55,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:24:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:55,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 09:24:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:55,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 09:24:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:55,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:24:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:55,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:24:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:55,740 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-21 09:24:55,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:24:55,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051810970] [2022-07-21 09:24:55,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051810970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:24:55,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:24:55,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:24:55,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541374804] [2022-07-21 09:24:55,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:24:55,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:24:55,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:24:55,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:24:55,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:24:55,778 INFO L87 Difference]: Start difference. First operand has 185 states, 110 states have (on average 1.2) internal successors, (132), 111 states have internal predecessors, (132), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 09:24:56,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:24:56,371 INFO L93 Difference]: Finished difference Result 413 states and 633 transitions. [2022-07-21 09:24:56,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 09:24:56,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2022-07-21 09:24:56,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:24:56,385 INFO L225 Difference]: With dead ends: 413 [2022-07-21 09:24:56,385 INFO L226 Difference]: Without dead ends: 230 [2022-07-21 09:24:56,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:24:56,391 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 70 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:24:56,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 352 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 09:24:56,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-07-21 09:24:56,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 180. [2022-07-21 09:24:56,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 106 states have (on average 1.1886792452830188) internal successors, (126), 107 states have internal predecessors, (126), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-07-21 09:24:56,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 239 transitions. [2022-07-21 09:24:56,433 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 239 transitions. Word has length 84 [2022-07-21 09:24:56,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:24:56,434 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 239 transitions. [2022-07-21 09:24:56,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 09:24:56,434 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 239 transitions. [2022-07-21 09:24:56,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 09:24:56,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:24:56,437 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:24:56,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:24:56,437 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:24:56,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:24:56,438 INFO L85 PathProgramCache]: Analyzing trace with hash -734960815, now seen corresponding path program 1 times [2022-07-21 09:24:56,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:24:56,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142066339] [2022-07-21 09:24:56,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:56,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:24:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:56,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:24:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:56,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:24:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:56,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:24:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:56,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:24:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:56,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:24:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:56,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:24:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:56,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:24:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:56,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:24:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:56,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:24:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:56,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 09:24:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:56,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 09:24:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:56,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:24:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:56,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 09:24:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-21 09:24:56,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:24:56,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142066339] [2022-07-21 09:24:56,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142066339] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:24:56,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139757228] [2022-07-21 09:24:56,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:56,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:24:56,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:24:56,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:24:56,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:24:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:57,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 09:24:57,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:24:57,145 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 09:24:57,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:24:57,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139757228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:24:57,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:24:57,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-21 09:24:57,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671299007] [2022-07-21 09:24:57,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:24:57,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:24:57,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:24:57,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:24:57,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:24:57,148 INFO L87 Difference]: Start difference. First operand 180 states and 239 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 09:24:57,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:24:57,342 INFO L93 Difference]: Finished difference Result 325 states and 446 transitions. [2022-07-21 09:24:57,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:24:57,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 84 [2022-07-21 09:24:57,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:24:57,344 INFO L225 Difference]: With dead ends: 325 [2022-07-21 09:24:57,344 INFO L226 Difference]: Without dead ends: 182 [2022-07-21 09:24:57,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:24:57,346 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 245 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:24:57,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 706 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:24:57,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-07-21 09:24:57,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-07-21 09:24:57,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 109 states have internal predecessors, (127), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (66), 56 states have call predecessors, (66), 56 states have call successors, (66) [2022-07-21 09:24:57,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 250 transitions. [2022-07-21 09:24:57,360 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 250 transitions. Word has length 84 [2022-07-21 09:24:57,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:24:57,360 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 250 transitions. [2022-07-21 09:24:57,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 09:24:57,361 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 250 transitions. [2022-07-21 09:24:57,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-21 09:24:57,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:24:57,362 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:24:57,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 09:24:57,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:24:57,584 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:24:57,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:24:57,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1141222523, now seen corresponding path program 1 times [2022-07-21 09:24:57,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:24:57,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189603674] [2022-07-21 09:24:57,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:57,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:24:57,625 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:24:57,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1929613879] [2022-07-21 09:24:57,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:57,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:24:57,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:24:57,627 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:24:57,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:24:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:24:58,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 2272 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:24:58,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:24:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-21 09:24:58,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:24:58,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:24:58,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189603674] [2022-07-21 09:24:58,150 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:24:58,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929613879] [2022-07-21 09:24:58,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929613879] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:24:58,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:24:58,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:24:58,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497200930] [2022-07-21 09:24:58,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:24:58,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:24:58,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:24:58,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:24:58,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:24:58,152 INFO L87 Difference]: Start difference. First operand 182 states and 250 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-21 09:24:58,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:24:58,453 INFO L93 Difference]: Finished difference Result 317 states and 440 transitions. [2022-07-21 09:24:58,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:24:58,454 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 99 [2022-07-21 09:24:58,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:24:58,455 INFO L225 Difference]: With dead ends: 317 [2022-07-21 09:24:58,456 INFO L226 Difference]: Without dead ends: 182 [2022-07-21 09:24:58,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:24:58,457 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 265 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:24:58,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 934 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:24:58,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-07-21 09:24:58,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-07-21 09:24:58,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 109 states have internal predecessors, (127), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2022-07-21 09:24:58,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 247 transitions. [2022-07-21 09:24:58,470 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 247 transitions. Word has length 99 [2022-07-21 09:24:58,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:24:58,470 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 247 transitions. [2022-07-21 09:24:58,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-21 09:24:58,470 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 247 transitions. [2022-07-21 09:24:58,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 09:24:58,471 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:24:58,472 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 09:24:58,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:24:58,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-21 09:24:58,686 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:24:58,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:24:58,686 INFO L85 PathProgramCache]: Analyzing trace with hash 232916013, now seen corresponding path program 2 times [2022-07-21 09:24:58,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:24:58,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616292503] [2022-07-21 09:24:58,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:24:58,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:24:58,741 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:24:58,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610913243] [2022-07-21 09:24:58,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:24:58,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:24:58,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:24:58,752 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:24:58,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:24:59,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:24:59,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:24:59,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 09:24:59,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:24:59,414 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-21 09:24:59,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:24:59,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:24:59,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616292503] [2022-07-21 09:24:59,414 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:24:59,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610913243] [2022-07-21 09:24:59,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610913243] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:24:59,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:24:59,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:24:59,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204902791] [2022-07-21 09:24:59,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:24:59,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:24:59,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:24:59,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:24:59,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:24:59,415 INFO L87 Difference]: Start difference. First operand 182 states and 247 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-21 09:24:59,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:24:59,848 INFO L93 Difference]: Finished difference Result 326 states and 450 transitions. [2022-07-21 09:24:59,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:24:59,851 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 114 [2022-07-21 09:24:59,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:24:59,852 INFO L225 Difference]: With dead ends: 326 [2022-07-21 09:24:59,852 INFO L226 Difference]: Without dead ends: 194 [2022-07-21 09:24:59,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-07-21 09:24:59,854 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 283 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:24:59,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 1236 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 09:24:59,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-07-21 09:24:59,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2022-07-21 09:24:59,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 113 states have (on average 1.1858407079646018) internal successors, (134), 115 states have internal predecessors, (134), 62 states have call successors, (62), 17 states have call predecessors, (62), 18 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2022-07-21 09:24:59,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 264 transitions. [2022-07-21 09:24:59,866 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 264 transitions. Word has length 114 [2022-07-21 09:24:59,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:24:59,866 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 264 transitions. [2022-07-21 09:24:59,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-21 09:24:59,867 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 264 transitions. [2022-07-21 09:24:59,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 09:24:59,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:24:59,868 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:24:59,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 09:25:00,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:25:00,089 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:25:00,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:25:00,090 INFO L85 PathProgramCache]: Analyzing trace with hash -159680425, now seen corresponding path program 1 times [2022-07-21 09:25:00,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:25:00,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500694061] [2022-07-21 09:25:00,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:25:00,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:25:00,174 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:25:00,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1181913045] [2022-07-21 09:25:00,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:25:00,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:25:00,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:25:00,192 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:25:00,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:25:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:25:01,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 331 conjunts are in the unsatisfiable core [2022-07-21 09:25:01,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:25:01,158 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-07-21 09:25:01,240 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 [2022-07-21 09:25:01,718 INFO L356 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2022-07-21 09:25:01,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 53 [2022-07-21 09:25:01,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:25:01,919 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-21 09:25:01,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-07-21 09:25:03,788 INFO L356 Elim1Store]: treesize reduction 91, result has 30.0 percent of original size [2022-07-21 09:25:03,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 46 treesize of output 69 [2022-07-21 09:25:03,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:25:03,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:25:03,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2022-07-21 09:25:15,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:25:15,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:25:15,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:25:15,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:25:15,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:25:16,080 INFO L356 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-07-21 09:25:16,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 76 [2022-07-21 09:25:16,236 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-21 09:25:16,237 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-21 09:25:58,264 INFO L356 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-07-21 09:25:58,264 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 165 treesize of output 101 [2022-07-21 09:25:59,992 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 49 proven. 104 refuted. 4 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 09:25:59,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:26:21,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:26:21,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500694061] [2022-07-21 09:26:21,801 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:26:21,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181913045] [2022-07-21 09:26:21,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181913045] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:26:21,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:26:21,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2022-07-21 09:26:21,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011202638] [2022-07-21 09:26:21,802 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:26:21,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-07-21 09:26:21,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:26:21,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-07-21 09:26:21,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=3641, Unknown=40, NotChecked=0, Total=3906 [2022-07-21 09:26:21,804 INFO L87 Difference]: Start difference. First operand 194 states and 264 transitions. Second operand has 59 states, 48 states have (on average 1.9166666666666667) internal successors, (92), 44 states have internal predecessors, (92), 18 states have call successors, (23), 11 states have call predecessors, (23), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2022-07-21 09:26:44,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:26:44,243 INFO L93 Difference]: Finished difference Result 268 states and 372 transitions. [2022-07-21 09:26:44,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-21 09:26:44,244 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 48 states have (on average 1.9166666666666667) internal successors, (92), 44 states have internal predecessors, (92), 18 states have call successors, (23), 11 states have call predecessors, (23), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) Word has length 144 [2022-07-21 09:26:44,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:26:44,246 INFO L225 Difference]: With dead ends: 268 [2022-07-21 09:26:44,246 INFO L226 Difference]: Without dead ends: 264 [2022-07-21 09:26:44,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 81 SyntacticMatches, 8 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2228 ImplicationChecksByTransitivity, 60.7s TimeCoverageRelationStatistics Valid=381, Invalid=6374, Unknown=51, NotChecked=0, Total=6806 [2022-07-21 09:26:44,248 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 88 mSDsluCounter, 2875 mSDsCounter, 0 mSdLazyCounter, 2102 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 5078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2903 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:26:44,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 3094 Invalid, 5078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2102 Invalid, 0 Unknown, 2903 Unchecked, 1.5s Time] [2022-07-21 09:26:44,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-07-21 09:26:44,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 256. [2022-07-21 09:26:44,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 154 states have (on average 1.1753246753246753) internal successors, (181), 158 states have internal predecessors, (181), 74 states have call successors, (74), 25 states have call predecessors, (74), 27 states have return successors, (101), 72 states have call predecessors, (101), 73 states have call successors, (101) [2022-07-21 09:26:44,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 356 transitions. [2022-07-21 09:26:44,272 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 356 transitions. Word has length 144 [2022-07-21 09:26:44,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:26:44,273 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 356 transitions. [2022-07-21 09:26:44,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 48 states have (on average 1.9166666666666667) internal successors, (92), 44 states have internal predecessors, (92), 18 states have call successors, (23), 11 states have call predecessors, (23), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2022-07-21 09:26:44,274 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 356 transitions. [2022-07-21 09:26:44,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-21 09:26:44,279 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:26:44,280 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:26:44,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 09:26:44,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:26:44,480 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:26:44,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:26:44,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1971620744, now seen corresponding path program 1 times [2022-07-21 09:26:44,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:26:44,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576887802] [2022-07-21 09:26:44,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:26:44,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:26:44,572 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:26:44,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664625303] [2022-07-21 09:26:44,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:26:44,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:26:44,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:26:44,578 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:26:44,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:26:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:44,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-21 09:26:44,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:26:44,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:26:45,036 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-21 09:26:45,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2022-07-21 09:26:47,133 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_514 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_514)))) is different from true [2022-07-21 09:27:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-21 09:27:05,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:27:05,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:05,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576887802] [2022-07-21 09:27:05,023 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:05,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664625303] [2022-07-21 09:27:05,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664625303] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:27:05,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:27:05,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 09:27:05,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001462228] [2022-07-21 09:27:05,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:27:05,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 09:27:05,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:05,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 09:27:05,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=255, Unknown=7, NotChecked=32, Total=342 [2022-07-21 09:27:05,027 INFO L87 Difference]: Start difference. First operand 256 states and 356 transitions. Second operand has 19 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 16 states have internal predecessors, (63), 8 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2022-07-21 09:27:05,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:05,700 INFO L93 Difference]: Finished difference Result 477 states and 699 transitions. [2022-07-21 09:27:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 09:27:05,700 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 16 states have internal predecessors, (63), 8 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 150 [2022-07-21 09:27:05,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:05,704 INFO L225 Difference]: With dead ends: 477 [2022-07-21 09:27:05,704 INFO L226 Difference]: Without dead ends: 310 [2022-07-21 09:27:05,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 131 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=66, Invalid=393, Unknown=7, NotChecked=40, Total=506 [2022-07-21 09:27:05,705 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 129 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 2126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1101 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:05,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1171 Invalid, 2126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 939 Invalid, 0 Unknown, 1101 Unchecked, 0.6s Time] [2022-07-21 09:27:05,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-07-21 09:27:05,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 260. [2022-07-21 09:27:05,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 156 states have (on average 1.1730769230769231) internal successors, (183), 161 states have internal predecessors, (183), 75 states have call successors, (75), 25 states have call predecessors, (75), 28 states have return successors, (103), 73 states have call predecessors, (103), 74 states have call successors, (103) [2022-07-21 09:27:05,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 361 transitions. [2022-07-21 09:27:05,726 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 361 transitions. Word has length 150 [2022-07-21 09:27:05,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:05,727 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 361 transitions. [2022-07-21 09:27:05,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 16 states have internal predecessors, (63), 8 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2022-07-21 09:27:05,728 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 361 transitions. [2022-07-21 09:27:05,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-21 09:27:05,730 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:05,730 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:27:05,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:05,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:05,943 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:05,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:05,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1846323648, now seen corresponding path program 1 times [2022-07-21 09:27:05,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:05,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188237685] [2022-07-21 09:27:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:05,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:05,995 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:05,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153582179] [2022-07-21 09:27:05,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:05,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:05,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:06,009 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:27:06,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 09:27:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:06,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 2707 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-21 09:27:06,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-21 09:27:06,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:27:06,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:06,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188237685] [2022-07-21 09:27:06,526 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:06,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153582179] [2022-07-21 09:27:06,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153582179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:27:06,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:27:06,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 09:27:06,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510409839] [2022-07-21 09:27:06,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:27:06,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 09:27:06,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:06,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 09:27:06,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:27:06,527 INFO L87 Difference]: Start difference. First operand 260 states and 361 transitions. Second operand has 13 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 4 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-21 09:27:06,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:06,761 INFO L93 Difference]: Finished difference Result 421 states and 615 transitions. [2022-07-21 09:27:06,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 09:27:06,762 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 4 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) Word has length 162 [2022-07-21 09:27:06,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:06,763 INFO L225 Difference]: With dead ends: 421 [2022-07-21 09:27:06,763 INFO L226 Difference]: Without dead ends: 271 [2022-07-21 09:27:06,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:27:06,764 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 12 mSDsluCounter, 2631 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2879 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:06,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2879 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:27:06,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-07-21 09:27:06,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 267. [2022-07-21 09:27:06,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 162 states have (on average 1.1790123456790123) internal successors, (191), 168 states have internal predecessors, (191), 75 states have call successors, (75), 25 states have call predecessors, (75), 29 states have return successors, (118), 73 states have call predecessors, (118), 74 states have call successors, (118) [2022-07-21 09:27:06,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 384 transitions. [2022-07-21 09:27:06,780 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 384 transitions. Word has length 162 [2022-07-21 09:27:06,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:06,780 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 384 transitions. [2022-07-21 09:27:06,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 4 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-21 09:27:06,780 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 384 transitions. [2022-07-21 09:27:06,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 09:27:06,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:06,782 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:27:06,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:06,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:06,997 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:06,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:06,998 INFO L85 PathProgramCache]: Analyzing trace with hash -554047211, now seen corresponding path program 1 times [2022-07-21 09:27:06,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:06,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977395800] [2022-07-21 09:27:06,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:06,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:07,067 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:07,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689761293] [2022-07-21 09:27:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:07,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:07,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:07,069 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:27:07,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 09:27:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:07,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:27:07,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-21 09:27:07,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:27:07,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:07,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977395800] [2022-07-21 09:27:07,471 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:07,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689761293] [2022-07-21 09:27:07,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689761293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:27:07,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:27:07,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:27:07,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94407078] [2022-07-21 09:27:07,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:27:07,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:27:07,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:07,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:27:07,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:27:07,472 INFO L87 Difference]: Start difference. First operand 267 states and 384 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 09:27:07,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:07,499 INFO L93 Difference]: Finished difference Result 449 states and 697 transitions. [2022-07-21 09:27:07,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:27:07,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2022-07-21 09:27:07,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:07,501 INFO L225 Difference]: With dead ends: 449 [2022-07-21 09:27:07,502 INFO L226 Difference]: Without dead ends: 275 [2022-07-21 09:27:07,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:27:07,503 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 7 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:07,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 709 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:27:07,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-07-21 09:27:07,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 269. [2022-07-21 09:27:07,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 164 states have (on average 1.170731707317073) internal successors, (192), 170 states have internal predecessors, (192), 75 states have call successors, (75), 25 states have call predecessors, (75), 29 states have return successors, (118), 73 states have call predecessors, (118), 74 states have call successors, (118) [2022-07-21 09:27:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 385 transitions. [2022-07-21 09:27:07,518 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 385 transitions. Word has length 144 [2022-07-21 09:27:07,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:07,518 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 385 transitions. [2022-07-21 09:27:07,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 09:27:07,518 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 385 transitions. [2022-07-21 09:27:07,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-21 09:27:07,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:07,520 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:27:07,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:07,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:07,741 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:07,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:07,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1117478802, now seen corresponding path program 2 times [2022-07-21 09:27:07,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:07,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737140757] [2022-07-21 09:27:07,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:07,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:07,825 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:07,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [918750920] [2022-07-21 09:27:07,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:27:07,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:07,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:07,826 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:27:07,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 09:27:09,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:27:09,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:27:09,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-21 09:27:09,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-21 09:27:09,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:27:09,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:09,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737140757] [2022-07-21 09:27:09,206 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:09,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918750920] [2022-07-21 09:27:09,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918750920] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:27:09,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:27:09,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 09:27:09,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261791175] [2022-07-21 09:27:09,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:27:09,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 09:27:09,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:09,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 09:27:09,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:27:09,208 INFO L87 Difference]: Start difference. First operand 269 states and 385 transitions. Second operand has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 9 states have internal predecessors, (75), 3 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 09:27:09,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:09,410 INFO L93 Difference]: Finished difference Result 435 states and 632 transitions. [2022-07-21 09:27:09,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 09:27:09,411 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 9 states have internal predecessors, (75), 3 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) Word has length 150 [2022-07-21 09:27:09,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:09,412 INFO L225 Difference]: With dead ends: 435 [2022-07-21 09:27:09,412 INFO L226 Difference]: Without dead ends: 269 [2022-07-21 09:27:09,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:27:09,415 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 11 mSDsluCounter, 2398 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:09,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2646 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:27:09,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-07-21 09:27:09,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2022-07-21 09:27:09,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 164 states have (on average 1.170731707317073) internal successors, (192), 170 states have internal predecessors, (192), 75 states have call successors, (75), 25 states have call predecessors, (75), 29 states have return successors, (116), 73 states have call predecessors, (116), 74 states have call successors, (116) [2022-07-21 09:27:09,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 383 transitions. [2022-07-21 09:27:09,432 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 383 transitions. Word has length 150 [2022-07-21 09:27:09,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:09,432 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 383 transitions. [2022-07-21 09:27:09,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 9 states have internal predecessors, (75), 3 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 09:27:09,432 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 383 transitions. [2022-07-21 09:27:09,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-21 09:27:09,433 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:09,434 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:27:09,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:09,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-21 09:27:09,658 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:09,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:09,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1828043554, now seen corresponding path program 1 times [2022-07-21 09:27:09,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:09,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253821499] [2022-07-21 09:27:09,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:09,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:09,702 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:09,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382148998] [2022-07-21 09:27:09,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:09,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:09,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:09,704 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:27:09,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 09:27:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:10,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 96 conjunts are in the unsatisfiable core [2022-07-21 09:27:10,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:10,328 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_971 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_971))) is different from true [2022-07-21 09:27:10,541 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:27:10,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-07-21 09:27:10,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:27:10,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 37 [2022-07-21 09:27:10,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:27:10,690 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:27:10,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 20 [2022-07-21 09:27:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 137 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 09:27:10,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:27:11,417 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-21 09:27:11,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-21 09:27:11,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:11,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253821499] [2022-07-21 09:27:11,521 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:11,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382148998] [2022-07-21 09:27:11,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382148998] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:27:11,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:27:11,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-07-21 09:27:11,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253418102] [2022-07-21 09:27:11,522 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:27:11,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-21 09:27:11,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:11,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-21 09:27:11,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1331, Unknown=27, NotChecked=74, Total=1560 [2022-07-21 09:27:11,523 INFO L87 Difference]: Start difference. First operand 269 states and 383 transitions. Second operand has 26 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 24 states have internal predecessors, (85), 10 states have call successors, (23), 7 states have call predecessors, (23), 8 states have return successors, (20), 8 states have call predecessors, (20), 10 states have call successors, (20) [2022-07-21 09:27:12,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:12,998 INFO L93 Difference]: Finished difference Result 507 states and 747 transitions. [2022-07-21 09:27:12,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-21 09:27:12,999 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 24 states have internal predecessors, (85), 10 states have call successors, (23), 7 states have call predecessors, (23), 8 states have return successors, (20), 8 states have call predecessors, (20), 10 states have call successors, (20) Word has length 150 [2022-07-21 09:27:12,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:13,001 INFO L225 Difference]: With dead ends: 507 [2022-07-21 09:27:13,001 INFO L226 Difference]: Without dead ends: 335 [2022-07-21 09:27:13,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 190 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=311, Invalid=2968, Unknown=31, NotChecked=112, Total=3422 [2022-07-21 09:27:13,003 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 154 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 2319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 756 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:13,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 1567 Invalid, 2319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1474 Invalid, 0 Unknown, 756 Unchecked, 1.0s Time] [2022-07-21 09:27:13,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-07-21 09:27:13,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 302. [2022-07-21 09:27:13,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 185 states have (on average 1.1513513513513514) internal successors, (213), 192 states have internal predecessors, (213), 83 states have call successors, (83), 31 states have call predecessors, (83), 33 states have return successors, (140), 78 states have call predecessors, (140), 82 states have call successors, (140) [2022-07-21 09:27:13,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 436 transitions. [2022-07-21 09:27:13,018 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 436 transitions. Word has length 150 [2022-07-21 09:27:13,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:13,019 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 436 transitions. [2022-07-21 09:27:13,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 24 states have internal predecessors, (85), 10 states have call successors, (23), 7 states have call predecessors, (23), 8 states have return successors, (20), 8 states have call predecessors, (20), 10 states have call successors, (20) [2022-07-21 09:27:13,019 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 436 transitions. [2022-07-21 09:27:13,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-21 09:27:13,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:13,020 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:27:13,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:13,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 09:27:13,243 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:13,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:13,243 INFO L85 PathProgramCache]: Analyzing trace with hash 962711242, now seen corresponding path program 1 times [2022-07-21 09:27:13,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:13,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186591866] [2022-07-21 09:27:13,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:13,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:13,287 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:13,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697294059] [2022-07-21 09:27:13,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:13,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:13,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:13,304 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:27:13,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 09:27:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:13,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 2751 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-21 09:27:13,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:13,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:27:13,882 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-21 09:27:13,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2022-07-21 09:27:15,822 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1123 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1123)) |c_#memory_$Pointer$.base|)) is different from true [2022-07-21 09:27:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-21 09:27:33,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:27:33,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:33,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186591866] [2022-07-21 09:27:33,750 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:33,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697294059] [2022-07-21 09:27:33,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697294059] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:27:33,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:27:33,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 09:27:33,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575574514] [2022-07-21 09:27:33,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:27:33,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 09:27:33,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:33,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 09:27:33,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=255, Unknown=7, NotChecked=32, Total=342 [2022-07-21 09:27:33,751 INFO L87 Difference]: Start difference. First operand 302 states and 436 transitions. Second operand has 19 states, 17 states have (on average 4.176470588235294) internal successors, (71), 16 states have internal predecessors, (71), 8 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2022-07-21 09:27:34,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:34,542 INFO L93 Difference]: Finished difference Result 549 states and 808 transitions. [2022-07-21 09:27:34,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 09:27:34,542 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.176470588235294) internal successors, (71), 16 states have internal predecessors, (71), 8 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 161 [2022-07-21 09:27:34,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:34,546 INFO L225 Difference]: With dead ends: 549 [2022-07-21 09:27:34,546 INFO L226 Difference]: Without dead ends: 347 [2022-07-21 09:27:34,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 140 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=66, Invalid=393, Unknown=7, NotChecked=40, Total=506 [2022-07-21 09:27:34,547 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 116 mSDsluCounter, 1175 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 2093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 910 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:34,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1418 Invalid, 2093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1104 Invalid, 0 Unknown, 910 Unchecked, 0.7s Time] [2022-07-21 09:27:34,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-07-21 09:27:34,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 301. [2022-07-21 09:27:34,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 185 states have (on average 1.1513513513513514) internal successors, (213), 191 states have internal predecessors, (213), 82 states have call successors, (82), 32 states have call predecessors, (82), 33 states have return successors, (135), 77 states have call predecessors, (135), 81 states have call successors, (135) [2022-07-21 09:27:34,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 430 transitions. [2022-07-21 09:27:34,566 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 430 transitions. Word has length 161 [2022-07-21 09:27:34,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:34,567 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 430 transitions. [2022-07-21 09:27:34,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.176470588235294) internal successors, (71), 16 states have internal predecessors, (71), 8 states have call successors, (23), 4 states have call predecessors, (23), 7 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2022-07-21 09:27:34,567 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 430 transitions. [2022-07-21 09:27:34,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-21 09:27:34,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:34,568 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:27:34,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:34,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 09:27:34,789 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:34,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:34,790 INFO L85 PathProgramCache]: Analyzing trace with hash -927515593, now seen corresponding path program 1 times [2022-07-21 09:27:34,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:34,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25818186] [2022-07-21 09:27:34,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:34,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:34,836 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:34,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773646710] [2022-07-21 09:27:34,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:34,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:34,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:34,837 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:27:34,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 09:27:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:35,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 78 conjunts are in the unsatisfiable core [2022-07-21 09:27:35,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:37,612 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1266 Int) (v_ArrVal_1265 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1266))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1265)) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-21 09:28:04,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:28:04,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:28:04,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-07-21 09:28:04,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:28:04,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:28:04,397 INFO L356 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-07-21 09:28:04,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2022-07-21 09:28:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 133 proven. 3 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-21 09:28:04,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:28:06,619 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1279 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_46| Int) (v_ArrVal_1280 Int)) (let ((.cse0 (+ |c_aws_array_list_pop_front_~list#1.offset| 32))) (or (not (= 0 (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_46| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_46|) 0 v_ArrVal_1280)) |c_aws_array_list_pop_front_~list#1.base|) .cse0))) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_46| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_46|) 0 v_ArrVal_1279)) |c_aws_array_list_pop_front_~list#1.base|) .cse0) 0))))) is different from false [2022-07-21 09:28:06,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:28:06,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25818186] [2022-07-21 09:28:06,621 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:28:06,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773646710] [2022-07-21 09:28:06,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773646710] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:28:06,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:28:06,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-07-21 09:28:06,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608670886] [2022-07-21 09:28:06,622 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:28:06,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-21 09:28:06,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:28:06,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-21 09:28:06,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=287, Unknown=11, NotChecked=70, Total=420 [2022-07-21 09:28:06,623 INFO L87 Difference]: Start difference. First operand 301 states and 430 transitions. Second operand has 20 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 8 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (21), 7 states have call predecessors, (21), 8 states have call successors, (21) [2022-07-21 09:28:32,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:28:32,295 INFO L93 Difference]: Finished difference Result 538 states and 820 transitions. [2022-07-21 09:28:32,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:28:32,296 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 8 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (21), 7 states have call predecessors, (21), 8 states have call successors, (21) Word has length 158 [2022-07-21 09:28:32,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:28:32,298 INFO L225 Difference]: With dead ends: 538 [2022-07-21 09:28:32,298 INFO L226 Difference]: Without dead ends: 361 [2022-07-21 09:28:32,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 55.1s TimeCoverageRelationStatistics Valid=133, Invalid=664, Unknown=23, NotChecked=110, Total=930 [2022-07-21 09:28:32,299 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 123 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 3228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1355 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:28:32,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1782 Invalid, 3228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1799 Invalid, 0 Unknown, 1355 Unchecked, 1.3s Time] [2022-07-21 09:28:32,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-07-21 09:28:32,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 322. [2022-07-21 09:28:32,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 200 states have (on average 1.155) internal successors, (231), 208 states have internal predecessors, (231), 85 states have call successors, (85), 34 states have call predecessors, (85), 36 states have return successors, (172), 79 states have call predecessors, (172), 84 states have call successors, (172) [2022-07-21 09:28:32,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 488 transitions. [2022-07-21 09:28:32,315 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 488 transitions. Word has length 158 [2022-07-21 09:28:32,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:28:32,316 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 488 transitions. [2022-07-21 09:28:32,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 8 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (21), 7 states have call predecessors, (21), 8 states have call successors, (21) [2022-07-21 09:28:32,316 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 488 transitions. [2022-07-21 09:28:32,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 09:28:32,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:28:32,317 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-21 09:28:32,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-21 09:28:32,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-21 09:28:32,532 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:28:32,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:28:32,532 INFO L85 PathProgramCache]: Analyzing trace with hash -140706377, now seen corresponding path program 3 times [2022-07-21 09:28:32,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:28:32,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444189734] [2022-07-21 09:28:32,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:28:32,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:28:32,597 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:28:32,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1766398027] [2022-07-21 09:28:32,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 09:28:32,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:28:32,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:28:32,599 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:28:32,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 09:28:33,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-21 09:28:33,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:28:33,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-21 09:28:33,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:28:34,000 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-21 09:28:34,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:28:34,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:28:34,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444189734] [2022-07-21 09:28:34,000 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:28:34,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766398027] [2022-07-21 09:28:34,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766398027] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:28:34,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:28:34,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 09:28:34,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16431546] [2022-07-21 09:28:34,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:28:34,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 09:28:34,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:28:34,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 09:28:34,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:28:34,001 INFO L87 Difference]: Start difference. First operand 322 states and 488 transitions. Second operand has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 09:28:34,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:28:34,186 INFO L93 Difference]: Finished difference Result 521 states and 810 transitions. [2022-07-21 09:28:34,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 09:28:34,187 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2022-07-21 09:28:34,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:28:34,189 INFO L225 Difference]: With dead ends: 521 [2022-07-21 09:28:34,189 INFO L226 Difference]: Without dead ends: 299 [2022-07-21 09:28:34,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:28:34,190 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 11 mSDsluCounter, 2388 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:28:34,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2635 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:28:34,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-07-21 09:28:34,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 291. [2022-07-21 09:28:34,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 180 states have (on average 1.1611111111111112) internal successors, (209), 186 states have internal predecessors, (209), 78 states have call successors, (78), 30 states have call predecessors, (78), 32 states have return successors, (133), 74 states have call predecessors, (133), 77 states have call successors, (133) [2022-07-21 09:28:34,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 420 transitions. [2022-07-21 09:28:34,205 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 420 transitions. Word has length 156 [2022-07-21 09:28:34,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:28:34,206 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 420 transitions. [2022-07-21 09:28:34,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 9 states have internal predecessors, (71), 3 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 09:28:34,206 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 420 transitions. [2022-07-21 09:28:34,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-21 09:28:34,207 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:28:34,207 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:28:34,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 09:28:34,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-21 09:28:34,431 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:28:34,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:28:34,431 INFO L85 PathProgramCache]: Analyzing trace with hash 239637183, now seen corresponding path program 1 times [2022-07-21 09:28:34,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:28:34,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044198670] [2022-07-21 09:28:34,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:28:34,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:28:34,472 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:28:34,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148356960] [2022-07-21 09:28:34,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:28:34,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:28:34,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:28:34,476 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:28:34,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 09:28:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:28:34,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:28:34,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:28:34,955 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-21 09:28:34,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:28:34,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:28:34,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044198670] [2022-07-21 09:28:34,956 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:28:34,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148356960] [2022-07-21 09:28:34,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148356960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:28:34,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:28:34,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:28:34,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062922396] [2022-07-21 09:28:34,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:28:34,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:28:34,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:28:34,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:28:34,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:28:34,957 INFO L87 Difference]: Start difference. First operand 291 states and 420 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 09:28:35,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:28:35,188 INFO L93 Difference]: Finished difference Result 477 states and 752 transitions. [2022-07-21 09:28:35,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:28:35,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2022-07-21 09:28:35,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:28:35,191 INFO L225 Difference]: With dead ends: 477 [2022-07-21 09:28:35,191 INFO L226 Difference]: Without dead ends: 296 [2022-07-21 09:28:35,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:28:35,192 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 7 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:28:35,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 904 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:28:35,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-07-21 09:28:35,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 292. [2022-07-21 09:28:35,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 181 states have (on average 1.1546961325966851) internal successors, (209), 187 states have internal predecessors, (209), 78 states have call successors, (78), 30 states have call predecessors, (78), 32 states have return successors, (133), 74 states have call predecessors, (133), 77 states have call successors, (133) [2022-07-21 09:28:35,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 420 transitions. [2022-07-21 09:28:35,210 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 420 transitions. Word has length 146 [2022-07-21 09:28:35,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:28:35,210 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 420 transitions. [2022-07-21 09:28:35,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 09:28:35,210 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 420 transitions. [2022-07-21 09:28:35,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-21 09:28:35,211 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:28:35,211 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:28:35,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-21 09:28:35,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-21 09:28:35,433 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:28:35,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:28:35,433 INFO L85 PathProgramCache]: Analyzing trace with hash 2137133949, now seen corresponding path program 1 times [2022-07-21 09:28:35,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:28:35,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793363633] [2022-07-21 09:28:35,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:28:35,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:28:35,473 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:28:35,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1962294749] [2022-07-21 09:28:35,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:28:35,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:28:35,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:28:35,475 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:28:35,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 09:28:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:28:35,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 85 conjunts are in the unsatisfiable core [2022-07-21 09:28:35,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:28:36,103 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-21 09:28:36,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-07-21 09:28:36,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:28:36,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-21 09:28:38,243 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1657 Int) (v_ArrVal_1658 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1657))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1658))))) is different from true [2022-07-21 09:28:51,606 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-21 09:28:51,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:28:51,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:28:51,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793363633] [2022-07-21 09:28:51,606 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:28:51,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962294749] [2022-07-21 09:28:51,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962294749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:28:51,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:28:51,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-21 09:28:51,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15254894] [2022-07-21 09:28:51,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:28:51,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 09:28:51,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:28:51,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 09:28:51,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=331, Unknown=3, NotChecked=36, Total=420 [2022-07-21 09:28:51,608 INFO L87 Difference]: Start difference. First operand 292 states and 420 transitions. Second operand has 21 states, 17 states have (on average 3.764705882352941) internal successors, (64), 18 states have internal predecessors, (64), 8 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (17), 7 states have call predecessors, (17), 8 states have call successors, (17) [2022-07-21 09:28:52,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:28:52,825 INFO L93 Difference]: Finished difference Result 474 states and 699 transitions. [2022-07-21 09:28:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 09:28:52,825 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 3.764705882352941) internal successors, (64), 18 states have internal predecessors, (64), 8 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (17), 7 states have call predecessors, (17), 8 states have call successors, (17) Word has length 146 [2022-07-21 09:28:52,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:28:52,827 INFO L225 Difference]: With dead ends: 474 [2022-07-21 09:28:52,827 INFO L226 Difference]: Without dead ends: 292 [2022-07-21 09:28:52,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=99, Invalid=658, Unknown=3, NotChecked=52, Total=812 [2022-07-21 09:28:52,828 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 114 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 2464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1201 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:28:52,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1530 Invalid, 2464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1195 Invalid, 0 Unknown, 1201 Unchecked, 0.7s Time] [2022-07-21 09:28:52,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-07-21 09:28:52,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2022-07-21 09:28:52,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 181 states have (on average 1.1546961325966851) internal successors, (209), 187 states have internal predecessors, (209), 78 states have call successors, (78), 30 states have call predecessors, (78), 32 states have return successors, (132), 74 states have call predecessors, (132), 77 states have call successors, (132) [2022-07-21 09:28:52,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 419 transitions. [2022-07-21 09:28:52,842 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 419 transitions. Word has length 146 [2022-07-21 09:28:52,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:28:52,842 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 419 transitions. [2022-07-21 09:28:52,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 3.764705882352941) internal successors, (64), 18 states have internal predecessors, (64), 8 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (17), 7 states have call predecessors, (17), 8 states have call successors, (17) [2022-07-21 09:28:52,842 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 419 transitions. [2022-07-21 09:28:52,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-21 09:28:52,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:28:52,843 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:28:52,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-21 09:28:53,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:28:53,064 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:28:53,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:28:53,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1618157166, now seen corresponding path program 1 times [2022-07-21 09:28:53,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:28:53,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630000657] [2022-07-21 09:28:53,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:28:53,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:28:53,108 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:28:53,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [213960251] [2022-07-21 09:28:53,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:28:53,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:28:53,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:28:53,125 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:28:53,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 09:28:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:28:53,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 2739 conjuncts, 73 conjunts are in the unsatisfiable core [2022-07-21 09:28:53,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:28:54,171 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 25 treesize of output 17 [2022-07-21 09:28:54,174 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 18 treesize of output 10 [2022-07-21 09:28:54,183 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 21 treesize of output 13 [2022-07-21 09:28:54,210 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-21 09:28:54,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:28:54,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:28:54,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630000657] [2022-07-21 09:28:54,211 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:28:54,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213960251] [2022-07-21 09:28:54,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213960251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:28:54,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:28:54,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 09:28:54,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522698517] [2022-07-21 09:28:54,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:28:54,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 09:28:54,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:28:54,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 09:28:54,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:28:54,212 INFO L87 Difference]: Start difference. First operand 292 states and 419 transitions. Second operand has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 12 states have internal predecessors, (68), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-07-21 09:28:55,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:28:55,682 INFO L93 Difference]: Finished difference Result 510 states and 761 transitions. [2022-07-21 09:28:55,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 09:28:55,682 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 12 states have internal predecessors, (68), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 152 [2022-07-21 09:28:55,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:28:55,684 INFO L225 Difference]: With dead ends: 510 [2022-07-21 09:28:55,684 INFO L226 Difference]: Without dead ends: 334 [2022-07-21 09:28:55,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2022-07-21 09:28:55,686 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 199 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 1915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 426 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:28:55,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 1212 Invalid, 1915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1437 Invalid, 0 Unknown, 426 Unchecked, 1.2s Time] [2022-07-21 09:28:55,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-07-21 09:28:55,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 296. [2022-07-21 09:28:55,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 184 states have (on average 1.1467391304347827) internal successors, (211), 190 states have internal predecessors, (211), 78 states have call successors, (78), 31 states have call predecessors, (78), 33 states have return successors, (132), 74 states have call predecessors, (132), 77 states have call successors, (132) [2022-07-21 09:28:55,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 421 transitions. [2022-07-21 09:28:55,701 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 421 transitions. Word has length 152 [2022-07-21 09:28:55,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:28:55,701 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 421 transitions. [2022-07-21 09:28:55,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 12 states have internal predecessors, (68), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-07-21 09:28:55,701 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 421 transitions. [2022-07-21 09:28:55,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-21 09:28:55,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:28:55,702 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:28:55,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-21 09:28:55,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-21 09:28:55,924 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:28:55,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:28:55,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1117519482, now seen corresponding path program 1 times [2022-07-21 09:28:55,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:28:55,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419212326] [2022-07-21 09:28:55,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:28:55,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:28:55,978 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:28:55,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404489396] [2022-07-21 09:28:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:28:55,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:28:55,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:28:55,979 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:28:55,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 09:28:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:28:56,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 83 conjunts are in the unsatisfiable core [2022-07-21 09:28:56,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:28:56,782 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_1932 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1932))) (exists ((v_ArrVal_1931 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1931))))) is different from true [2022-07-21 09:28:57,044 INFO L356 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-07-21 09:28:57,045 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2022-07-21 09:28:57,048 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 16 treesize of output 13 [2022-07-21 09:28:57,052 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2022-07-21 09:28:57,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2022-07-21 09:28:59,093 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((v_aws_array_list_length_~list.offset_BEFORE_CALL_10 Int) (v_aws_array_list_length_~list.base_BEFORE_CALL_11 Int)) (not (= (select (select |c_#memory_$Pointer$.offset| v_aws_array_list_length_~list.base_BEFORE_CALL_11) (+ v_aws_array_list_length_~list.offset_BEFORE_CALL_10 32)) 0))) (exists ((v_aws_array_list_length_~list.offset_BEFORE_CALL_10 Int) (v_aws_array_list_length_~list.base_BEFORE_CALL_11 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_array_list_length_~list.base_BEFORE_CALL_11) (+ v_aws_array_list_length_~list.offset_BEFORE_CALL_10 32)) 0)))) is different from true [2022-07-21 09:28:59,387 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 106 proven. 6 refuted. 4 times theorem prover too weak. 47 trivial. 11 not checked. [2022-07-21 09:28:59,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:28:59,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:28:59,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419212326] [2022-07-21 09:28:59,843 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:28:59,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404489396] [2022-07-21 09:28:59,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404489396] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:28:59,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:28:59,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-07-21 09:28:59,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308405391] [2022-07-21 09:28:59,843 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:28:59,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 09:28:59,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:28:59,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 09:28:59,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=496, Unknown=30, NotChecked=94, Total=702 [2022-07-21 09:28:59,844 INFO L87 Difference]: Start difference. First operand 296 states and 421 transitions. Second operand has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 8 states have call successors, (22), 6 states have call predecessors, (22), 8 states have return successors, (20), 9 states have call predecessors, (20), 7 states have call successors, (20) [2022-07-21 09:29:27,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:29:27,033 INFO L93 Difference]: Finished difference Result 506 states and 772 transitions. [2022-07-21 09:29:27,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 09:29:27,034 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 8 states have call successors, (22), 6 states have call predecessors, (22), 8 states have return successors, (20), 9 states have call predecessors, (20), 7 states have call successors, (20) Word has length 152 [2022-07-21 09:29:27,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:29:27,036 INFO L225 Difference]: With dead ends: 506 [2022-07-21 09:29:27,036 INFO L226 Difference]: Without dead ends: 336 [2022-07-21 09:29:27,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 146 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=186, Invalid=886, Unknown=58, NotChecked=130, Total=1260 [2022-07-21 09:29:27,037 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 132 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 2440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1329 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 09:29:27,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1128 Invalid, 2440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1038 Invalid, 0 Unknown, 1329 Unchecked, 0.9s Time] [2022-07-21 09:29:27,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-07-21 09:29:27,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 330. [2022-07-21 09:29:27,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 205 states have (on average 1.1365853658536584) internal successors, (233), 214 states have internal predecessors, (233), 85 states have call successors, (85), 34 states have call predecessors, (85), 39 states have return successors, (190), 81 states have call predecessors, (190), 84 states have call successors, (190) [2022-07-21 09:29:27,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 508 transitions. [2022-07-21 09:29:27,057 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 508 transitions. Word has length 152 [2022-07-21 09:29:27,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:29:27,057 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 508 transitions. [2022-07-21 09:29:27,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 8 states have call successors, (22), 6 states have call predecessors, (22), 8 states have return successors, (20), 9 states have call predecessors, (20), 7 states have call successors, (20) [2022-07-21 09:29:27,058 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 508 transitions. [2022-07-21 09:29:27,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-21 09:29:27,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:29:27,059 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-21 09:29:27,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-07-21 09:29:27,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-21 09:29:27,280 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:29:27,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:29:27,280 INFO L85 PathProgramCache]: Analyzing trace with hash 968141548, now seen corresponding path program 2 times [2022-07-21 09:29:27,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:29:27,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344640998] [2022-07-21 09:29:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:29:27,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:29:27,318 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:29:27,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539538705] [2022-07-21 09:29:27,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:29:27,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:29:27,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:29:27,320 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:29:27,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process