./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 f4b24e32 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-?-f4b24e3 [2022-07-13 22:30:43,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:30:43,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:30:43,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:30:43,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:30:43,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:30:43,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:30:43,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:30:43,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:30:43,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:30:43,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:30:43,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:30:43,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:30:43,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:30:43,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:30:43,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:30:43,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:30:43,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:30:43,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:30:43,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:30:43,118 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:30:43,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:30:43,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:30:43,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:30:43,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:30:43,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:30:43,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:30:43,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:30:43,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:30:43,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:30:43,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:30:43,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:30:43,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:30:43,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:30:43,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:30:43,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:30:43,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:30:43,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:30:43,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:30:43,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:30:43,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:30:43,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:30:43,134 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:30:43,154 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:30:43,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:30:43,155 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:30:43,155 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:30:43,156 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:30:43,156 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:30:43,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:30:43,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:30:43,157 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:30:43,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:30:43,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:30:43,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:30:43,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:30:43,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:30:43,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:30:43,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:30:43,159 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:30:43,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:30:43,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:30:43,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:30:43,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:30:43,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:30:43,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:30:43,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:30:43,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:30:43,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:30:43,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:30:43,160 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:30:43,161 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:30:43,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:30:43,161 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 [2022-07-13 22:30:43,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:30:43,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:30:43,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:30:43,368 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:30:43,369 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:30:43,370 INFO L432 ainManager$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 [2022-07-13 22:30:43,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c4916bb3/314105076d3143078b642a59ad5f8d17/FLAGd163c6fd3 [2022-07-13 22:30:43,909 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:30:43,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2022-07-13 22:30:43,933 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c4916bb3/314105076d3143078b642a59ad5f8d17/FLAGd163c6fd3 [2022-07-13 22:30:44,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c4916bb3/314105076d3143078b642a59ad5f8d17 [2022-07-13 22:30:44,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:30:44,443 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:30:44,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:30:44,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:30:44,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:30:44,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:30:44" (1/1) ... [2022-07-13 22:30:44,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4005988d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:30:44, skipping insertion in model container [2022-07-13 22:30:44,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:30:44" (1/1) ... [2022-07-13 22:30:44,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:30:44,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:30:44,702 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] [2022-07-13 22:30:44,707 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] [2022-07-13 22:30:45,107 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:30:45,148 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,150 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,150 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,151 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,153 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,160 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,162 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,164 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,164 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,166 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,167 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,168 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,168 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,370 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:30:45,373 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:30:45,374 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:30:45,378 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:30:45,380 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:30:45,381 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:30:45,381 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:30:45,382 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:30:45,384 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:30:45,384 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:30:45,489 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,495 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:30:45,591 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:30:45,599 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] [2022-07-13 22:30:45,599 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] [2022-07-13 22:30:45,617 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:30:45,625 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,626 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,626 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,626 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,627 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,630 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,630 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,631 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,631 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,632 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,632 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,632 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,633 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,650 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:30:45,651 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:30:45,651 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:30:45,652 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:30:45,652 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:30:45,653 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:30:45,653 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:30:45,653 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:30:45,654 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:30:45,654 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:30:45,669 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,672 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:30:45,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:30:45,814 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:30:45,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:30:45 WrapperNode [2022-07-13 22:30:45,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:30:45,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:30:45,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:30:45,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:30:45,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:30:45" (1/1) ... [2022-07-13 22:30:45,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:30:45" (1/1) ... [2022-07-13 22:30:45,946 INFO L137 Inliner]: procedures = 691, calls = 1684, calls flagged for inlining = 51, calls inlined = 10, statements flattened = 684 [2022-07-13 22:30:45,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:30:45,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:30:45,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:30:45,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:30:45,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:30:45" (1/1) ... [2022-07-13 22:30:45,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:30:45" (1/1) ... [2022-07-13 22:30:45,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:30:45" (1/1) ... [2022-07-13 22:30:45,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:30:45" (1/1) ... [2022-07-13 22:30:46,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:30:45" (1/1) ... [2022-07-13 22:30:46,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:30:45" (1/1) ... [2022-07-13 22:30:46,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:30:45" (1/1) ... [2022-07-13 22:30:46,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:30:46,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:30:46,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:30:46,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:30:46,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:30:45" (1/1) ... [2022-07-13 22:30:46,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:30:46,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:30:46,047 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) [2022-07-13 22:30:46,051 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 [2022-07-13 22:30:46,079 INFO L130 BoogieDeclarations]: Found specification of procedure memmove_impl [2022-07-13 22:30:46,080 INFO L138 BoogieDeclarations]: Found implementation of procedure memmove_impl [2022-07-13 22:30:46,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:30:46,081 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-13 22:30:46,081 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-13 22:30:46,081 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-13 22:30:46,082 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-13 22:30:46,082 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-13 22:30:46,082 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-13 22:30:46,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:30:46,082 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-13 22:30:46,082 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-13 22:30:46,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:30:46,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:30:46,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:30:46,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:30:46,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:30:46,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:30:46,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:30:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-13 22:30:46,084 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-13 22:30:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-13 22:30:46,085 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-13 22:30:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-13 22:30:46,085 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-13 22:30:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-13 22:30:46,085 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-13 22:30:46,085 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:30:46,085 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:30:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:30:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:30:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 22:30:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-13 22:30:46,086 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-13 22:30:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-13 22:30:46,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-13 22:30:46,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:30:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure my_memmove [2022-07-13 22:30:46,087 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memmove [2022-07-13 22:30:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_front [2022-07-13 22:30:46,087 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_front [2022-07-13 22:30:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-13 22:30:46,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-13 22:30:46,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:30:46,322 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:30:46,323 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:30:46,863 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:30:46,871 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:30:46,871 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:30:46,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:30:46 BoogieIcfgContainer [2022-07-13 22:30:46,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:30:46,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:30:46,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:30:46,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:30:46,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:30:44" (1/3) ... [2022-07-13 22:30:46,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273f092d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:30:46, skipping insertion in model container [2022-07-13 22:30:46,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:30:45" (2/3) ... [2022-07-13 22:30:46,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273f092d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:30:46, skipping insertion in model container [2022-07-13 22:30:46,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:30:46" (3/3) ... [2022-07-13 22:30:46,879 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_front_harness.i [2022-07-13 22:30:46,891 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:30:46,891 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:30:46,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:30:46,944 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@1cac0ead, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@799c28e6 [2022-07-13 22:30:46,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 22:30:46,950 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) [2022-07-13 22:30:46,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-13 22:30:46,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:30:46,960 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] [2022-07-13 22:30:46,961 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:30:46,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:30:46,965 INFO L85 PathProgramCache]: Analyzing trace with hash 928387541, now seen corresponding path program 1 times [2022-07-13 22:30:46,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:30:46,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705076625] [2022-07-13 22:30:46,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:46,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:30:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:47,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:30:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:47,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:30:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:47,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:30:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:47,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:30:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:47,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:30:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:47,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 22:30:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:47,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:30:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:47,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:30:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:47,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:30:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:47,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 22:30:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:47,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 22:30:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:47,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:30:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:47,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 22:30:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 22:30:47,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:30:47,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705076625] [2022-07-13 22:30:47,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705076625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:30:47,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:30:47,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:30:47,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723002855] [2022-07-13 22:30:47,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:30:47,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:30:47,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:30:47,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:30:47,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:30:47,526 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) [2022-07-13 22:30:47,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:30:47,995 INFO L93 Difference]: Finished difference Result 413 states and 633 transitions. [2022-07-13 22:30:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 22:30:47,997 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 [2022-07-13 22:30:47,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:30:48,005 INFO L225 Difference]: With dead ends: 413 [2022-07-13 22:30:48,005 INFO L226 Difference]: Without dead ends: 230 [2022-07-13 22:30:48,008 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 [2022-07-13 22:30:48,010 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, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:30:48,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 352 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 22:30:48,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-07-13 22:30:48,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 180. [2022-07-13 22:30:48,048 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) [2022-07-13 22:30:48,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 239 transitions. [2022-07-13 22:30:48,050 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 239 transitions. Word has length 84 [2022-07-13 22:30:48,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:30:48,051 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 239 transitions. [2022-07-13 22:30:48,051 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) [2022-07-13 22:30:48,051 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 239 transitions. [2022-07-13 22:30:48,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-13 22:30:48,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:30:48,054 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] [2022-07-13 22:30:48,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:30:48,054 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:30:48,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:30:48,055 INFO L85 PathProgramCache]: Analyzing trace with hash -734960815, now seen corresponding path program 1 times [2022-07-13 22:30:48,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:30:48,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986602254] [2022-07-13 22:30:48,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:48,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:30:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:48,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:30:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:48,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:30:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:48,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:30:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:48,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:30:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:48,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:30:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:48,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 22:30:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:48,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:30:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:48,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:30:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:48,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:30:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:48,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 22:30:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:48,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 22:30:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:48,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:30:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:48,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 22:30:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-13 22:30:48,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:30:48,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986602254] [2022-07-13 22:30:48,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986602254] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:30:48,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876363801] [2022-07-13 22:30:48,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:48,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:30:48,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:30:48,326 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) [2022-07-13 22:30:48,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:30:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:48,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 22:30:48,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:30:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-13 22:30:48,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:30:48,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876363801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:30:48,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:30:48,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-13 22:30:48,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123619210] [2022-07-13 22:30:48,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:30:48,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:30:48,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:30:48,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:30:48,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:30:48,709 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) [2022-07-13 22:30:48,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:30:48,902 INFO L93 Difference]: Finished difference Result 325 states and 446 transitions. [2022-07-13 22:30:48,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:30:48,903 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 [2022-07-13 22:30:48,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:30:48,904 INFO L225 Difference]: With dead ends: 325 [2022-07-13 22:30:48,904 INFO L226 Difference]: Without dead ends: 182 [2022-07-13 22:30:48,905 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 [2022-07-13 22:30:48,906 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 [2022-07-13 22:30:48,906 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] [2022-07-13 22:30:48,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-07-13 22:30:48,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-07-13 22:30:48,917 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) [2022-07-13 22:30:48,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 250 transitions. [2022-07-13 22:30:48,918 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 250 transitions. Word has length 84 [2022-07-13 22:30:48,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:30:48,918 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 250 transitions. [2022-07-13 22:30:48,918 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) [2022-07-13 22:30:48,919 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 250 transitions. [2022-07-13 22:30:48,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-13 22:30:48,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:30:48,920 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] [2022-07-13 22:30:48,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:30:49,120 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 [2022-07-13 22:30:49,121 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:30:49,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:30:49,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1141222523, now seen corresponding path program 1 times [2022-07-13 22:30:49,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:30:49,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170666947] [2022-07-13 22:30:49,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:49,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:30:49,181 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:30:49,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139876350] [2022-07-13 22:30:49,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:49,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:30:49,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:30:49,190 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) [2022-07-13 22:30:49,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:30:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:49,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 2272 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:30:49,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:30:49,574 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-13 22:30:49,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:30:49,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:30:49,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170666947] [2022-07-13 22:30:49,574 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:30:49,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139876350] [2022-07-13 22:30:49,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139876350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:30:49,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:30:49,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:30:49,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846574925] [2022-07-13 22:30:49,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:30:49,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:30:49,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:30:49,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:30:49,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:30:49,577 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) [2022-07-13 22:30:49,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:30:49,883 INFO L93 Difference]: Finished difference Result 317 states and 440 transitions. [2022-07-13 22:30:49,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:30:49,884 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 [2022-07-13 22:30:49,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:30:49,885 INFO L225 Difference]: With dead ends: 317 [2022-07-13 22:30:49,885 INFO L226 Difference]: Without dead ends: 182 [2022-07-13 22:30:49,886 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 [2022-07-13 22:30:49,887 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:30:49,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 934 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:30:49,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-07-13 22:30:49,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-07-13 22:30:49,896 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) [2022-07-13 22:30:49,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 247 transitions. [2022-07-13 22:30:49,897 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 247 transitions. Word has length 99 [2022-07-13 22:30:49,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:30:49,898 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 247 transitions. [2022-07-13 22:30:49,898 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) [2022-07-13 22:30:49,898 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 247 transitions. [2022-07-13 22:30:49,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-13 22:30:49,899 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:30:49,899 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] [2022-07-13 22:30:49,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:30:50,123 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 [2022-07-13 22:30:50,123 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:30:50,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:30:50,124 INFO L85 PathProgramCache]: Analyzing trace with hash 232916013, now seen corresponding path program 2 times [2022-07-13 22:30:50,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:30:50,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699395082] [2022-07-13 22:30:50,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:50,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:30:50,161 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:30:50,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652701612] [2022-07-13 22:30:50,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:30:50,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:30:50,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:30:50,163 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) [2022-07-13 22:30:50,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:30:50,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:30:50,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:30:50,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 22:30:50,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:30:50,752 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-13 22:30:50,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:30:50,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:30:50,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699395082] [2022-07-13 22:30:50,753 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:30:50,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652701612] [2022-07-13 22:30:50,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652701612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:30:50,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:30:50,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:30:50,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772321569] [2022-07-13 22:30:50,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:30:50,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:30:50,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:30:50,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:30:50,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:30:50,755 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) [2022-07-13 22:30:51,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:30:51,172 INFO L93 Difference]: Finished difference Result 326 states and 450 transitions. [2022-07-13 22:30:51,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:30:51,173 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 [2022-07-13 22:30:51,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:30:51,175 INFO L225 Difference]: With dead ends: 326 [2022-07-13 22:30:51,176 INFO L226 Difference]: Without dead ends: 194 [2022-07-13 22:30:51,178 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 [2022-07-13 22:30:51,180 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:30:51,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 1236 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:30:51,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-07-13 22:30:51,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2022-07-13 22:30:51,199 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) [2022-07-13 22:30:51,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 264 transitions. [2022-07-13 22:30:51,200 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 264 transitions. Word has length 114 [2022-07-13 22:30:51,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:30:51,201 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 264 transitions. [2022-07-13 22:30:51,202 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) [2022-07-13 22:30:51,202 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 264 transitions. [2022-07-13 22:30:51,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-13 22:30:51,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:30:51,205 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] [2022-07-13 22:30:51,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:30:51,419 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 [2022-07-13 22:30:51,419 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:30:51,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:30:51,420 INFO L85 PathProgramCache]: Analyzing trace with hash -159680425, now seen corresponding path program 1 times [2022-07-13 22:30:51,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:30:51,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172191778] [2022-07-13 22:30:51,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:51,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:30:51,460 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:30:51,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017401357] [2022-07-13 22:30:51,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:30:51,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:30:51,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:30:51,461 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) [2022-07-13 22:30:51,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:30:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:30:52,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 331 conjunts are in the unsatisfiable core [2022-07-13 22:30:52,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:30:52,361 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 [2022-07-13 22:30:52,459 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 [2022-07-13 22:30:52,865 INFO L356 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2022-07-13 22:30:52,866 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 [2022-07-13 22:30:52,871 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 [2022-07-13 22:30:53,036 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-13 22:30:53,036 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 [2022-07-13 22:30:54,788 INFO L356 Elim1Store]: treesize reduction 91, result has 30.0 percent of original size [2022-07-13 22:30:54,788 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 [2022-07-13 22:30:54,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:30:54,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:30:54,797 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 [2022-07-13 22:31:08,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:31:08,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:31:08,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:31:08,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:31:08,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:31:08,358 INFO L356 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2022-07-13 22:31:08,358 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 [2022-07-13 22:31:08,623 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-13 22:31:08,624 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 [2022-07-13 22:31:40,492 INFO L356 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-07-13 22:31:40,492 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 [2022-07-13 22:31:41,247 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 49 proven. 106 refuted. 2 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 22:31:41,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:31:51,161 WARN L233 SmtUtils]: Spent 7.19s on a formula simplification that was a NOOP. DAG size: 87 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-13 22:32:00,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:32:00,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172191778] [2022-07-13 22:32:00,756 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:32:00,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017401357] [2022-07-13 22:32:00,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017401357] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:32:00,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:32:00,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2022-07-13 22:32:00,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213117474] [2022-07-13 22:32:00,756 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:32:00,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-07-13 22:32:00,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:32:00,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-07-13 22:32:00,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=3643, Unknown=38, NotChecked=0, Total=3906 [2022-07-13 22:32:00,758 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) [2022-07-13 22:32:20,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:32:20,686 INFO L93 Difference]: Finished difference Result 268 states and 372 transitions. [2022-07-13 22:32:20,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-13 22:32:20,687 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 [2022-07-13 22:32:20,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:32:20,689 INFO L225 Difference]: With dead ends: 268 [2022-07-13 22:32:20,689 INFO L226 Difference]: Without dead ends: 264 [2022-07-13 22:32:20,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 81 SyntacticMatches, 8 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2231 ImplicationChecksByTransitivity, 51.9s TimeCoverageRelationStatistics Valid=381, Invalid=6377, Unknown=48, NotChecked=0, Total=6806 [2022-07-13 22:32:20,691 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 88 mSDsluCounter, 2898 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 3119 SdHoareTripleChecker+Invalid, 5242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3058 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:32:20,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 3119 Invalid, 5242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2111 Invalid, 0 Unknown, 3058 Unchecked, 1.5s Time] [2022-07-13 22:32:20,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-07-13 22:32:20,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 256. [2022-07-13 22:32:20,704 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) [2022-07-13 22:32:20,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 356 transitions. [2022-07-13 22:32:20,706 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 356 transitions. Word has length 144 [2022-07-13 22:32:20,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:32:20,706 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 356 transitions. [2022-07-13 22:32:20,707 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) [2022-07-13 22:32:20,707 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 356 transitions. [2022-07-13 22:32:20,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-13 22:32:20,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:32:20,708 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] [2022-07-13 22:32:20,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:32:20,919 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 [2022-07-13 22:32:20,919 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:32:20,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:32:20,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1971620744, now seen corresponding path program 1 times [2022-07-13 22:32:20,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:32:20,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891019754] [2022-07-13 22:32:20,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:32:20,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:32:21,000 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:32:21,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2081098194] [2022-07-13 22:32:21,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:32:21,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:32:21,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:32:21,002 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) [2022-07-13 22:32:21,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:32:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:32:21,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-13 22:32:21,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:32:21,465 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 [2022-07-13 22:32:21,524 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-13 22:32:21,525 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 [2022-07-13 22:32:23,629 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 [2022-07-13 22:32:41,559 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-13 22:32:41,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:32:41,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:32:41,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891019754] [2022-07-13 22:32:41,560 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:32:41,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081098194] [2022-07-13 22:32:41,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081098194] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:32:41,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:32:41,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:32:41,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800494564] [2022-07-13 22:32:41,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:32:41,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:32:41,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:32:41,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:32:41,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=255, Unknown=7, NotChecked=32, Total=342 [2022-07-13 22:32:41,562 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) [2022-07-13 22:32:42,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:32:42,304 INFO L93 Difference]: Finished difference Result 478 states and 700 transitions. [2022-07-13 22:32:42,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:32:42,305 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 [2022-07-13 22:32:42,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:32:42,306 INFO L225 Difference]: With dead ends: 478 [2022-07-13 22:32:42,306 INFO L226 Difference]: Without dead ends: 311 [2022-07-13 22:32:42,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 131 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=66, Invalid=393, Unknown=7, NotChecked=40, Total=506 [2022-07-13 22:32:42,307 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 129 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 2178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1132 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:32:42,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1225 Invalid, 2178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 962 Invalid, 0 Unknown, 1132 Unchecked, 0.6s Time] [2022-07-13 22:32:42,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-07-13 22:32:42,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 260. [2022-07-13 22:32:42,320 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) [2022-07-13 22:32:42,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 361 transitions. [2022-07-13 22:32:42,322 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 361 transitions. Word has length 150 [2022-07-13 22:32:42,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:32:42,322 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 361 transitions. [2022-07-13 22:32:42,322 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) [2022-07-13 22:32:42,322 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 361 transitions. [2022-07-13 22:32:42,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-13 22:32:42,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:32:42,324 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] [2022-07-13 22:32:42,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 22:32:42,543 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 [2022-07-13 22:32:42,543 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:32:42,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:32:42,544 INFO L85 PathProgramCache]: Analyzing trace with hash -597444693, now seen corresponding path program 1 times [2022-07-13 22:32:42,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:32:42,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663190744] [2022-07-13 22:32:42,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:32:42,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:32:42,604 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:32:42,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195150082] [2022-07-13 22:32:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:32:42,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:32:42,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:32:42,606 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) [2022-07-13 22:32:42,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:32:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:32:42,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 2708 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-13 22:32:42,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:32:43,088 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-13 22:32:43,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:32:43,596 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 13 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-13 22:32:43,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:32:43,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663190744] [2022-07-13 22:32:43,597 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:32:43,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195150082] [2022-07-13 22:32:43,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195150082] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:32:43,597 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:32:43,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 21 [2022-07-13 22:32:43,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937667192] [2022-07-13 22:32:43,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:32:43,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-13 22:32:43,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:32:43,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-13 22:32:43,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:32:43,598 INFO L87 Difference]: Start difference. First operand 260 states and 361 transitions. Second operand has 21 states, 18 states have (on average 5.055555555555555) internal successors, (91), 14 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 7 states have return successors, (25), 8 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-13 22:32:43,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:32:43,922 INFO L93 Difference]: Finished difference Result 419 states and 611 transitions. [2022-07-13 22:32:43,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:32:43,923 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 5.055555555555555) internal successors, (91), 14 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 7 states have return successors, (25), 8 states have call predecessors, (25), 4 states have call successors, (25) Word has length 156 [2022-07-13 22:32:43,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:32:43,924 INFO L225 Difference]: With dead ends: 419 [2022-07-13 22:32:43,924 INFO L226 Difference]: Without dead ends: 269 [2022-07-13 22:32:43,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2022-07-13 22:32:43,925 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 19 mSDsluCounter, 3816 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4063 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:32:43,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4063 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:32:43,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-07-13 22:32:43,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 267. [2022-07-13 22:32:43,936 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) [2022-07-13 22:32:43,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 384 transitions. [2022-07-13 22:32:43,938 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 384 transitions. Word has length 156 [2022-07-13 22:32:43,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:32:43,938 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 384 transitions. [2022-07-13 22:32:43,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 5.055555555555555) internal successors, (91), 14 states have internal predecessors, (91), 5 states have call successors, (25), 3 states have call predecessors, (25), 7 states have return successors, (25), 8 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-13 22:32:43,938 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 384 transitions. [2022-07-13 22:32:43,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-13 22:32:43,940 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:32:43,940 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, 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] [2022-07-13 22:32:43,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 22:32:44,152 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 [2022-07-13 22:32:44,153 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:32:44,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:32:44,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1962681130, now seen corresponding path program 1 times [2022-07-13 22:32:44,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:32:44,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960568753] [2022-07-13 22:32:44,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:32:44,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:32:44,201 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:32:44,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915772525] [2022-07-13 22:32:44,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:32:44,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:32:44,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:32:44,204 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) [2022-07-13 22:32:44,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 22:32:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:32:44,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 2737 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:32:44,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:32:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-13 22:32:44,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:32:44,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:32:44,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960568753] [2022-07-13 22:32:44,599 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:32:44,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915772525] [2022-07-13 22:32:44,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915772525] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:32:44,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:32:44,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:32:44,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50892660] [2022-07-13 22:32:44,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:32:44,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:32:44,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:32:44,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:32:44,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:32:44,601 INFO L87 Difference]: Start difference. First operand 267 states and 384 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-13 22:32:44,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:32:44,626 INFO L93 Difference]: Finished difference Result 449 states and 697 transitions. [2022-07-13 22:32:44,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:32:44,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 162 [2022-07-13 22:32:44,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:32:44,629 INFO L225 Difference]: With dead ends: 449 [2022-07-13 22:32:44,629 INFO L226 Difference]: Without dead ends: 275 [2022-07-13 22:32:44,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:32:44,630 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 [2022-07-13 22:32:44,631 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] [2022-07-13 22:32:44,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-07-13 22:32:44,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 269. [2022-07-13 22:32:44,641 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) [2022-07-13 22:32:44,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 385 transitions. [2022-07-13 22:32:44,643 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 385 transitions. Word has length 162 [2022-07-13 22:32:44,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:32:44,643 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 385 transitions. [2022-07-13 22:32:44,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-13 22:32:44,643 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 385 transitions. [2022-07-13 22:32:44,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-13 22:32:44,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:32:44,644 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] [2022-07-13 22:32:44,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 22:32:44,859 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 [2022-07-13 22:32:44,859 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:32:44,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:32:44,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1101236825, now seen corresponding path program 1 times [2022-07-13 22:32:44,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:32:44,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795902599] [2022-07-13 22:32:44,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:32:44,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:32:44,927 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:32:44,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720406684] [2022-07-13 22:32:44,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:32:44,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:32:44,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:32:44,938 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) [2022-07-13 22:32:44,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 22:32:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:32:45,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 134 conjunts are in the unsatisfiable core [2022-07-13 22:32:45,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:32:45,598 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_874 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_874))) (exists ((v_ArrVal_873 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_873))))) is different from true [2022-07-13 22:32:45,793 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:32:45,793 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 [2022-07-13 22:32:45,806 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:32:45,806 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 [2022-07-13 22:32:45,948 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:32:45,950 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 22:32:45,950 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 53 treesize of output 40 [2022-07-13 22:32:48,206 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_875 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_875)) |c_#memory_$Pointer$.offset|)) is different from true [2022-07-13 22:33:17,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:33:17,859 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 121 proven. 33 refuted. 2 times theorem prover too weak. 15 trivial. 3 not checked. [2022-07-13 22:33:17,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:33:19,309 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_883 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_43| Int)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_43| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_43|) 0 v_ArrVal_883)) c_aws_array_list_length_~list.base) (+ 32 c_aws_array_list_length_~list.offset)) 0))) is different from false [2022-07-13 22:33:19,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:19,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795902599] [2022-07-13 22:33:19,310 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:33:19,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720406684] [2022-07-13 22:33:19,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720406684] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:33:19,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:33:19,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2022-07-13 22:33:19,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30322055] [2022-07-13 22:33:19,311 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:33:19,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-13 22:33:19,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:19,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-13 22:33:19,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1155, Unknown=81, NotChecked=216, Total=1560 [2022-07-13 22:33:19,312 INFO L87 Difference]: Start difference. First operand 269 states and 385 transitions. Second operand has 36 states, 33 states have (on average 2.787878787878788) internal successors, (92), 33 states have internal predecessors, (92), 13 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) [2022-07-13 22:33:20,548 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_874 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_874))) (exists ((v_ArrVal_873 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_873))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_875 Int)) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_875)) |c_#memory_$Pointer$.offset|))) is different from true [2022-07-13 22:34:18,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:34:18,372 INFO L93 Difference]: Finished difference Result 517 states and 770 transitions. [2022-07-13 22:34:18,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 22:34:18,373 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 2.787878787878788) internal successors, (92), 33 states have internal predecessors, (92), 13 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) Word has length 144 [2022-07-13 22:34:18,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:34:18,377 INFO L225 Difference]: With dead ends: 517 [2022-07-13 22:34:18,378 INFO L226 Difference]: Without dead ends: 349 [2022-07-13 22:34:18,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 135 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 90.9s TimeCoverageRelationStatistics Valid=371, Invalid=3743, Unknown=192, NotChecked=524, Total=4830 [2022-07-13 22:34:18,380 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 180 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 2217 SdHoareTripleChecker+Invalid, 4961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2613 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:34:18,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 2217 Invalid, 4961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2254 Invalid, 0 Unknown, 2613 Unchecked, 1.4s Time] [2022-07-13 22:34:18,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-07-13 22:34:18,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 306. [2022-07-13 22:34:18,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 189 states have (on average 1.164021164021164) internal successors, (220), 195 states have internal predecessors, (220), 83 states have call successors, (83), 31 states have call predecessors, (83), 33 states have return successors, (146), 79 states have call predecessors, (146), 82 states have call successors, (146) [2022-07-13 22:34:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 449 transitions. [2022-07-13 22:34:18,401 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 449 transitions. Word has length 144 [2022-07-13 22:34:18,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:34:18,402 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 449 transitions. [2022-07-13 22:34:18,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 2.787878787878788) internal successors, (92), 33 states have internal predecessors, (92), 13 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) [2022-07-13 22:34:18,402 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 449 transitions. [2022-07-13 22:34:18,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 22:34:18,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:34:18,403 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] [2022-07-13 22:34:18,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 22:34:18,607 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 [2022-07-13 22:34:18,607 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:34:18,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:34:18,608 INFO L85 PathProgramCache]: Analyzing trace with hash -165623501, now seen corresponding path program 1 times [2022-07-13 22:34:18,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:34:18,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758342909] [2022-07-13 22:34:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:34:18,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:34:18,656 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:34:18,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665279221] [2022-07-13 22:34:18,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:34:18,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:34:18,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:34:18,672 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) [2022-07-13 22:34:18,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 22:34:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:19,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 82 conjunts are in the unsatisfiable core [2022-07-13 22:34:19,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:34:21,485 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1020 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1021 Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1021)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$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_1020))))) is different from true [2022-07-13 22:35:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 139 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 22:35:00,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:35:03,009 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1034 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_55| Int)) (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_55| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_55|) 0 v_ArrVal_1034)) c_aws_array_list_length_~list.base) (+ 32 c_aws_array_list_length_~list.offset)) 0)) (forall ((v_ArrVal_1035 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_55| Int)) (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_55| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_55|) 0 v_ArrVal_1035)) c_aws_array_list_length_~list.base) (+ 32 c_aws_array_list_length_~list.offset)) 0))) is different from false [2022-07-13 22:35:03,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:35:03,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758342909] [2022-07-13 22:35:03,012 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:35:03,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665279221] [2022-07-13 22:35:03,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665279221] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:35:03,012 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:35:03,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-07-13 22:35:03,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077959055] [2022-07-13 22:35:03,012 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:35:03,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 22:35:03,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:35:03,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 22:35:03,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=358, Unknown=14, NotChecked=78, Total=506 [2022-07-13 22:35:03,013 INFO L87 Difference]: Start difference. First operand 306 states and 449 transitions. Second operand has 22 states, 20 states have (on average 4.2) internal successors, (84), 19 states have internal predecessors, (84), 9 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20)