./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_n_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_n_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 b6927eb425246c7f19dfd1037a51cb88a604d752602914724eb993d672f39eb9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:31:03,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:31:03,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:31:03,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:31:03,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:31:03,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:31:03,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:31:03,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:31:03,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:31:03,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:31:03,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:31:03,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:31:03,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:31:03,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:31:03,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:31:03,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:31:03,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:31:03,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:31:03,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:31:03,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:31:03,147 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:31:03,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:31:03,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:31:03,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:31:03,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:31:03,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:31:03,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:31:03,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:31:03,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:31:03,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:31:03,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:31:03,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:31:03,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:31:03,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:31:03,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:31:03,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:31:03,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:31:03,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:31:03,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:31:03,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:31:03,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:31:03,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:31:03,161 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:31:03,185 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:31:03,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:31:03,185 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:31:03,186 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:31:03,186 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:31:03,186 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:31:03,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:31:03,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:31:03,187 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:31:03,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:31:03,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:31:03,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:31:03,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:31:03,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:31:03,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:31:03,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:31:03,189 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:31:03,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:31:03,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:31:03,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:31:03,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:31:03,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:31:03,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:31:03,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:31:03,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:31:03,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:31:03,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:31:03,191 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:31:03,191 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:31:03,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:31:03,191 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6927eb425246c7f19dfd1037a51cb88a604d752602914724eb993d672f39eb9 [2022-07-13 22:31:03,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:31:03,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:31:03,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:31:03,415 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:31:03,415 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:31:03,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_n_harness.i [2022-07-13 22:31:03,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3a6b6330/962c145259bc4357827781fcb48c0be1/FLAG1aebe9ae8 [2022-07-13 22:31:04,040 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:31:04,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_n_harness.i [2022-07-13 22:31:04,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3a6b6330/962c145259bc4357827781fcb48c0be1/FLAG1aebe9ae8 [2022-07-13 22:31:04,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3a6b6330/962c145259bc4357827781fcb48c0be1 [2022-07-13 22:31:04,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:31:04,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:31:04,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:31:04,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:31:04,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:31:04,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:31:04" (1/1) ... [2022-07-13 22:31:04,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ae20b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:31:04, skipping insertion in model container [2022-07-13 22:31:04,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:31:04" (1/1) ... [2022-07-13 22:31:04,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:31:04,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:31:04,735 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_n_harness.i[4500,4513] [2022-07-13 22:31:04,740 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_n_harness.i[4560,4573] [2022-07-13 22:31:05,138 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:31:05,185 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,186 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,186 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,187 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,188 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,196 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,197 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,198 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,198 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,200 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,200 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,201 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,201 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,398 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:31:05,399 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:31:05,400 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:31:05,401 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:31:05,402 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:31:05,402 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:31:05,403 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:31:05,403 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:31:05,403 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:31:05,404 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:31:05,508 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,522 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:31:05,652 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:31:05,671 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_n_harness.i[4500,4513] [2022-07-13 22:31:05,671 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_n_harness.i[4560,4573] [2022-07-13 22:31:05,704 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:31:05,712 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,712 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,712 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,712 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,713 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,721 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,722 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,722 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,722 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,723 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,723 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,724 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,724 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,740 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:31:05,741 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:31:05,742 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:31:05,743 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:31:05,745 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:31:05,745 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:31:05,745 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:31:05,745 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:31:05,751 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:31:05,751 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:31:05,780 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,786 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:31:05,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:31:05,964 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:31:05,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:31:05 WrapperNode [2022-07-13 22:31:05,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:31:05,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:31:05,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:31:05,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:31:05,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:31:05" (1/1) ... [2022-07-13 22:31:06,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:31:05" (1/1) ... [2022-07-13 22:31:06,101 INFO L137 Inliner]: procedures = 691, calls = 1685, calls flagged for inlining = 51, calls inlined = 9, statements flattened = 664 [2022-07-13 22:31:06,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:31:06,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:31:06,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:31:06,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:31:06,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:31:05" (1/1) ... [2022-07-13 22:31:06,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:31:05" (1/1) ... [2022-07-13 22:31:06,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:31:05" (1/1) ... [2022-07-13 22:31:06,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:31:05" (1/1) ... [2022-07-13 22:31:06,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:31:05" (1/1) ... [2022-07-13 22:31:06,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:31:05" (1/1) ... [2022-07-13 22:31:06,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:31:05" (1/1) ... [2022-07-13 22:31:06,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:31:06,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:31:06,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:31:06,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:31:06,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:31:05" (1/1) ... [2022-07-13 22:31:06,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:31:06,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:31:06,175 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 22:31:06,183 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 22:31:06,209 INFO L130 BoogieDeclarations]: Found specification of procedure memmove_impl [2022-07-13 22:31:06,210 INFO L138 BoogieDeclarations]: Found implementation of procedure memmove_impl [2022-07-13 22:31:06,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:31:06,210 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-13 22:31:06,211 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-13 22:31:06,211 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-13 22:31:06,211 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-13 22:31:06,211 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-13 22:31:06,211 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-13 22:31:06,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:31:06,212 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-13 22:31:06,212 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-13 22:31:06,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:31:06,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:31:06,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:31:06,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:31:06,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:31:06,213 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_front_n [2022-07-13 22:31:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_front_n [2022-07-13 22:31:06,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:31:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:31:06,213 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-13 22:31:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-13 22:31:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-13 22:31:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-13 22:31:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-13 22:31:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-13 22:31:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-13 22:31:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-13 22:31:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:31:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:31:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:31:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:31:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 22:31:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-13 22:31:06,216 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-13 22:31:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-13 22:31:06,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-13 22:31:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:31:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure my_memmove [2022-07-13 22:31:06,217 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memmove [2022-07-13 22:31:06,217 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-13 22:31:06,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-13 22:31:06,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:31:06,490 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:31:06,491 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:31:07,082 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:31:07,087 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:31:07,087 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:31:07,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:31:07 BoogieIcfgContainer [2022-07-13 22:31:07,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:31:07,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:31:07,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:31:07,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:31:07,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:31:04" (1/3) ... [2022-07-13 22:31:07,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df14fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:31:07, skipping insertion in model container [2022-07-13 22:31:07,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:31:05" (2/3) ... [2022-07-13 22:31:07,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df14fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:31:07, skipping insertion in model container [2022-07-13 22:31:07,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:31:07" (3/3) ... [2022-07-13 22:31:07,094 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_front_n_harness.i [2022-07-13 22:31:07,103 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:31:07,103 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:31:07,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:31:07,137 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@62580162, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2c061df [2022-07-13 22:31:07,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 22:31:07,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 104 states have (on average 1.2115384615384615) internal successors, (126), 106 states have internal predecessors, (126), 49 states have call successors, (49), 16 states have call predecessors, (49), 16 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-13 22:31:07,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-13 22:31:07,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:31:07,148 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 22:31:07,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:31:07,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:31:07,152 INFO L85 PathProgramCache]: Analyzing trace with hash 931255937, now seen corresponding path program 1 times [2022-07-13 22:31:07,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:31:07,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174187781] [2022-07-13 22:31:07,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:31:07,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:31:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:31:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:07,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:31:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:07,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:31:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:07,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:31:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:07,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:31:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:07,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 22:31:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:07,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:31:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:07,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:31:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:07,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:31:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:07,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 22:31:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:07,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 22:31:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:07,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:31:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:07,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 22:31:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:07,642 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 22:31:07,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:31:07,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174187781] [2022-07-13 22:31:07,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174187781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:31:07,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:31:07,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:31:07,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667653355] [2022-07-13 22:31:07,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:31:07,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:31:07,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:31:07,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:31:07,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:31:07,672 INFO L87 Difference]: Start difference. First operand has 171 states, 104 states have (on average 1.2115384615384615) internal successors, (126), 106 states have internal predecessors, (126), 49 states have call successors, (49), 16 states have call predecessors, (49), 16 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) 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 22:31:08,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:31:08,037 INFO L93 Difference]: Finished difference Result 369 states and 548 transitions. [2022-07-13 22:31:08,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 22:31:08,041 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 22:31:08,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:31:08,056 INFO L225 Difference]: With dead ends: 369 [2022-07-13 22:31:08,056 INFO L226 Difference]: Without dead ends: 194 [2022-07-13 22:31:08,063 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 22:31:08,066 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 121 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:31:08,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 252 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:31:08,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-07-13 22:31:08,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 160. [2022-07-13 22:31:08,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 95 states have (on average 1.1789473684210525) internal successors, (112), 98 states have internal predecessors, (112), 49 states have call successors, (49), 16 states have call predecessors, (49), 15 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-13 22:31:08,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 206 transitions. [2022-07-13 22:31:08,118 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 206 transitions. Word has length 84 [2022-07-13 22:31:08,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:31:08,118 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 206 transitions. [2022-07-13 22:31:08,118 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 22:31:08,119 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 206 transitions. [2022-07-13 22:31:08,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-13 22:31:08,121 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:31:08,121 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 22:31:08,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:31:08,122 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:31:08,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:31:08,122 INFO L85 PathProgramCache]: Analyzing trace with hash -732092419, now seen corresponding path program 1 times [2022-07-13 22:31:08,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:31:08,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733650221] [2022-07-13 22:31:08,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:31:08,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:31:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:08,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:31:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:08,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:31:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:31:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:08,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:31:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:08,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:31:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:08,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 22:31:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:08,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:31:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:08,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:31:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:08,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:31:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:08,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 22:31:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:08,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 22:31:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:08,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 22:31:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:08,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 22:31:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:08,419 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 22:31:08,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:31:08,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733650221] [2022-07-13 22:31:08,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733650221] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:31:08,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281826199] [2022-07-13 22:31:08,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:31:08,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:31:08,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:31:08,422 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 22:31:08,423 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 22:31:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:08,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 2136 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 22:31:08,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:31:08,841 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 22:31:08,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:31:08,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281826199] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:31:08,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:31:08,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-13 22:31:08,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087214708] [2022-07-13 22:31:08,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:31:08,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:31:08,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:31:08,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:31:08,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:31:08,846 INFO L87 Difference]: Start difference. First operand 160 states and 206 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 22:31:09,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:31:09,030 INFO L93 Difference]: Finished difference Result 285 states and 377 transitions. [2022-07-13 22:31:09,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:31:09,030 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 22:31:09,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:31:09,032 INFO L225 Difference]: With dead ends: 285 [2022-07-13 22:31:09,032 INFO L226 Difference]: Without dead ends: 162 [2022-07-13 22:31:09,033 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 22:31:09,033 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 211 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:31:09,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 604 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:31:09,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-13 22:31:09,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-07-13 22:31:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 100 states have internal predecessors, (113), 49 states have call successors, (49), 16 states have call predecessors, (49), 16 states have return successors, (52), 45 states have call predecessors, (52), 45 states have call successors, (52) [2022-07-13 22:31:09,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 214 transitions. [2022-07-13 22:31:09,046 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 214 transitions. Word has length 84 [2022-07-13 22:31:09,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:31:09,046 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 214 transitions. [2022-07-13 22:31:09,046 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 22:31:09,046 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 214 transitions. [2022-07-13 22:31:09,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-13 22:31:09,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:31:09,049 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 22:31:09,082 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 22:31:09,284 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 22:31:09,285 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:31:09,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:31:09,285 INFO L85 PathProgramCache]: Analyzing trace with hash 681912055, now seen corresponding path program 1 times [2022-07-13 22:31:09,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:31:09,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035138317] [2022-07-13 22:31:09,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:31:09,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:31:09,330 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:31:09,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109019861] [2022-07-13 22:31:09,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:31:09,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:31:09,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:31:09,332 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 22:31:09,333 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 22:31:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:09,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 2277 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:31:09,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:31:09,714 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 22:31:09,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:31:09,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:31:09,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035138317] [2022-07-13 22:31:09,714 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:31:09,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109019861] [2022-07-13 22:31:09,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109019861] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:31:09,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:31:09,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:31:09,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958723506] [2022-07-13 22:31:09,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:31:09,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:31:09,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:31:09,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:31:09,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:31:09,717 INFO L87 Difference]: Start difference. First operand 162 states and 214 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 22:31:09,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:31:09,969 INFO L93 Difference]: Finished difference Result 277 states and 368 transitions. [2022-07-13 22:31:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:31:09,970 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 22:31:09,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:31:09,971 INFO L225 Difference]: With dead ends: 277 [2022-07-13 22:31:09,972 INFO L226 Difference]: Without dead ends: 162 [2022-07-13 22:31:09,972 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 22:31:09,973 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 225 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:31:09,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 803 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:31:09,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-13 22:31:10,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-07-13 22:31:10,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 100 states have internal predecessors, (113), 49 states have call successors, (49), 16 states have call predecessors, (49), 16 states have return successors, (49), 45 states have call predecessors, (49), 45 states have call successors, (49) [2022-07-13 22:31:10,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 211 transitions. [2022-07-13 22:31:10,016 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 211 transitions. Word has length 99 [2022-07-13 22:31:10,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:31:10,016 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 211 transitions. [2022-07-13 22:31:10,017 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 22:31:10,017 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 211 transitions. [2022-07-13 22:31:10,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-13 22:31:10,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:31:10,025 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 22:31:10,053 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 22:31:10,235 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 22:31:10,235 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:31:10,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:31:10,236 INFO L85 PathProgramCache]: Analyzing trace with hash -364128269, now seen corresponding path program 2 times [2022-07-13 22:31:10,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:31:10,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068050932] [2022-07-13 22:31:10,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:31:10,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:31:10,275 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:31:10,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [580088689] [2022-07-13 22:31:10,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:31:10,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:31:10,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:31:10,277 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 22:31:10,278 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 22:31:10,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:31:10,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:31:10,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 2418 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 22:31:10,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:31:10,831 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 22:31:10,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:31:10,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:31:10,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068050932] [2022-07-13 22:31:10,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:31:10,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580088689] [2022-07-13 22:31:10,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580088689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:31:10,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:31:10,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:31:10,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536166223] [2022-07-13 22:31:10,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:31:10,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:31:10,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:31:10,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:31:10,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:31:10,834 INFO L87 Difference]: Start difference. First operand 162 states and 211 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 22:31:11,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:31:11,210 INFO L93 Difference]: Finished difference Result 274 states and 360 transitions. [2022-07-13 22:31:11,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:31:11,214 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 22:31:11,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:31:11,216 INFO L225 Difference]: With dead ends: 274 [2022-07-13 22:31:11,216 INFO L226 Difference]: Without dead ends: 162 [2022-07-13 22:31:11,216 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 22:31:11,217 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 227 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:31:11,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 1019 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:31:11,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-13 22:31:11,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-07-13 22:31:11,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 100 states have internal predecessors, (113), 49 states have call successors, (49), 16 states have call predecessors, (49), 16 states have return successors, (47), 45 states have call predecessors, (47), 45 states have call successors, (47) [2022-07-13 22:31:11,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 209 transitions. [2022-07-13 22:31:11,226 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 209 transitions. Word has length 114 [2022-07-13 22:31:11,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:31:11,226 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 209 transitions. [2022-07-13 22:31:11,226 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 22:31:11,227 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 209 transitions. [2022-07-13 22:31:11,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-13 22:31:11,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:31:11,228 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 22:31:11,262 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 22:31:11,447 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 22:31:11,447 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:31:11,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:31:11,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1183711671, now seen corresponding path program 1 times [2022-07-13 22:31:11,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:31:11,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567929702] [2022-07-13 22:31:11,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:31:11,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:31:11,526 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:31:11,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964754130] [2022-07-13 22:31:11,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:31:11,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:31:11,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:31:11,528 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 22:31:11,529 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 22:31:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:31:12,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 296 conjunts are in the unsatisfiable core [2022-07-13 22:31:12,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:31:12,461 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 22:31:12,739 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 6 treesize of output 5 [2022-07-13 22:31:13,036 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-13 22:31:13,037 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 32 treesize of output 37 [2022-07-13 22:31:13,207 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-13 22:31:13,207 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 22:31:42,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-13 22:31:42,784 INFO L356 Elim1Store]: treesize reduction 129, result has 28.7 percent of original size [2022-07-13 22:31:42,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 51 treesize of output 85 [2022-07-13 22:31:48,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:31:48,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:31:48,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:31:48,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2022-07-13 22:31:48,911 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-07-13 22:31:48,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-07-13 22:32:14,694 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 42 proven. 115 refuted. 3 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 22:32:14,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:32:21,807 WARN L233 SmtUtils]: Spent 6.26s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-13 22:32:27,533 WARN L233 SmtUtils]: Spent 5.73s on a formula simplification that was a NOOP. DAG size: 85 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-13 22:32:39,341 WARN L233 SmtUtils]: Spent 11.81s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-13 22:32:45,442 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_14| Int)) (let ((.cse0 (let ((.cse1 (select |c_#memory_int| c_aws_array_list_length_~list.base))) (* (select .cse1 (+ c_aws_array_list_length_~list.offset 16)) (select .cse1 (+ c_aws_array_list_length_~list.offset 24)))))) (<= (mod .cse0 18446744073709551616) (mod (select (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_14| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_14|) 0 .cse0)) c_aws_array_list_length_~list.base) (+ c_aws_array_list_length_~list.offset 8)) 18446744073709551616)))) (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_14| Int)) (let ((.cse4 (+ c_aws_array_list_length_~list.offset 24))) (let ((.cse2 (let ((.cse5 (select |c_#memory_int| c_aws_array_list_length_~list.base))) (* (select .cse5 (+ c_aws_array_list_length_~list.offset 16)) (select .cse5 .cse4))))) (let ((.cse3 (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_14| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_14|) 0 .cse2)) c_aws_array_list_length_~list.base))) (or (not (<= (mod .cse2 18446744073709551616) (mod (select .cse3 (+ c_aws_array_list_length_~list.offset 8)) 18446744073709551616))) (not (= (mod (select .cse3 .cse4) 18446744073709551616) 0)))))))) is different from false [2022-07-13 22:32:45,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:32:45,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567929702] [2022-07-13 22:32:45,465 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:32:45,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964754130] [2022-07-13 22:32:45,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964754130] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:32:45,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:32:45,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2022-07-13 22:32:45,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776891865] [2022-07-13 22:32:45,466 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:32:45,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-07-13 22:32:45,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:32:45,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-07-13 22:32:45,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=3434, Unknown=37, NotChecked=118, Total=3782 [2022-07-13 22:32:45,468 INFO L87 Difference]: Start difference. First operand 162 states and 209 transitions. Second operand has 58 states, 48 states have (on average 1.9375) internal successors, (93), 44 states have internal predecessors, (93), 17 states have call successors, (23), 10 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 22:33:13,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:13,001 INFO L93 Difference]: Finished difference Result 235 states and 312 transitions. [2022-07-13 22:33:13,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-13 22:33:13,002 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 48 states have (on average 1.9375) internal successors, (93), 44 states have internal predecessors, (93), 17 states have call successors, (23), 10 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 22:33:13,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:13,005 INFO L225 Difference]: With dead ends: 235 [2022-07-13 22:33:13,005 INFO L226 Difference]: Without dead ends: 229 [2022-07-13 22:33:13,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 83 SyntacticMatches, 8 SemanticMatches, 80 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2038 ImplicationChecksByTransitivity, 83.7s TimeCoverageRelationStatistics Valid=351, Invalid=6084, Unknown=49, NotChecked=158, Total=6642 [2022-07-13 22:33:13,007 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 82 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 1660 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 4466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2747 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:13,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 2874 Invalid, 4466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1660 Invalid, 0 Unknown, 2747 Unchecked, 1.3s Time] [2022-07-13 22:33:13,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-07-13 22:33:13,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 223. [2022-07-13 22:33:13,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 136 states have (on average 1.1691176470588236) internal successors, (159), 142 states have internal predecessors, (159), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (76), 56 states have call predecessors, (76), 58 states have call successors, (76) [2022-07-13 22:33:13,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 297 transitions. [2022-07-13 22:33:13,021 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 297 transitions. Word has length 144 [2022-07-13 22:33:13,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:13,022 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 297 transitions. [2022-07-13 22:33:13,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 48 states have (on average 1.9375) internal successors, (93), 44 states have internal predecessors, (93), 17 states have call successors, (23), 10 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 22:33:13,022 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 297 transitions. [2022-07-13 22:33:13,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-13 22:33:13,023 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:13,024 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:33:13,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-13 22:33:13,243 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 22:33:13,243 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:13,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:13,244 INFO L85 PathProgramCache]: Analyzing trace with hash 216361017, now seen corresponding path program 1 times [2022-07-13 22:33:13,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:13,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984958610] [2022-07-13 22:33:13,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:13,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:13,321 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:33:13,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138145841] [2022-07-13 22:33:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:13,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:13,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:33:13,323 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 22:33:13,333 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 22:33:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:13,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:33:13,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:33:13,707 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-13 22:33:13,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:33:13,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:13,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984958610] [2022-07-13 22:33:13,707 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:33:13,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138145841] [2022-07-13 22:33:13,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138145841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:33:13,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:33:13,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:33:13,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583282074] [2022-07-13 22:33:13,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:33:13,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:33:13,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:13,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:33:13,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:33:13,709 INFO L87 Difference]: Start difference. First operand 223 states and 297 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 22:33:13,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:13,734 INFO L93 Difference]: Finished difference Result 366 states and 509 transitions. [2022-07-13 22:33:13,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:33:13,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2022-07-13 22:33:13,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:13,736 INFO L225 Difference]: With dead ends: 366 [2022-07-13 22:33:13,736 INFO L226 Difference]: Without dead ends: 228 [2022-07-13 22:33:13,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:33:13,737 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 7 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 610 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 22:33:13,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 610 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:33:13,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-07-13 22:33:13,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 225. [2022-07-13 22:33:13,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 138 states have (on average 1.1666666666666667) internal successors, (161), 144 states have internal predecessors, (161), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (76), 56 states have call predecessors, (76), 58 states have call successors, (76) [2022-07-13 22:33:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 299 transitions. [2022-07-13 22:33:13,764 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 299 transitions. Word has length 144 [2022-07-13 22:33:13,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:13,764 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 299 transitions. [2022-07-13 22:33:13,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 22:33:13,765 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 299 transitions. [2022-07-13 22:33:13,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-13 22:33:13,766 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:13,766 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 22:33:13,789 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 22:33:13,983 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 22:33:13,983 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:13,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:13,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1658135113, now seen corresponding path program 1 times [2022-07-13 22:33:13,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:13,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313490821] [2022-07-13 22:33:13,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:13,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:14,025 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:33:14,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033826440] [2022-07-13 22:33:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:14,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:14,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:33:14,027 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 22:33:14,028 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 22:33:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:14,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 2708 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-13 22:33:14,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:33:14,495 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-13 22:33:14,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:33:14,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:14,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313490821] [2022-07-13 22:33:14,495 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:33:14,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033826440] [2022-07-13 22:33:14,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033826440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:33:14,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:33:14,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 22:33:14,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126580155] [2022-07-13 22:33:14,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:33:14,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 22:33:14,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:14,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 22:33:14,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:33:14,511 INFO L87 Difference]: Start difference. First operand 225 states and 299 transitions. Second operand has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 3 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (20), 5 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 22:33:14,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:14,677 INFO L93 Difference]: Finished difference Result 366 states and 500 transitions. [2022-07-13 22:33:14,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 22:33:14,677 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 3 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (20), 5 states have call predecessors, (20), 3 states have call successors, (20) Word has length 156 [2022-07-13 22:33:14,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:14,679 INFO L225 Difference]: With dead ends: 366 [2022-07-13 22:33:14,679 INFO L226 Difference]: Without dead ends: 236 [2022-07-13 22:33:14,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:33:14,680 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 11 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:14,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2251 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:33:14,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-07-13 22:33:14,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-07-13 22:33:14,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 148 states have (on average 1.1756756756756757) internal successors, (174), 154 states have internal predecessors, (174), 62 states have call successors, (62), 24 states have call predecessors, (62), 25 states have return successors, (87), 57 states have call predecessors, (87), 58 states have call successors, (87) [2022-07-13 22:33:14,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 323 transitions. [2022-07-13 22:33:14,693 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 323 transitions. Word has length 156 [2022-07-13 22:33:14,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:14,693 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 323 transitions. [2022-07-13 22:33:14,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 3 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (20), 5 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 22:33:14,693 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 323 transitions. [2022-07-13 22:33:14,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-13 22:33:14,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:14,695 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:33:14,723 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 22:33:14,911 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 22:33:14,911 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:14,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:14,912 INFO L85 PathProgramCache]: Analyzing trace with hash 915893085, now seen corresponding path program 2 times [2022-07-13 22:33:14,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:14,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684064918] [2022-07-13 22:33:14,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:14,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:14,965 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:33:14,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971129657] [2022-07-13 22:33:14,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:33:14,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:14,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:33:14,967 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 22:33:14,968 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 22:33:15,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:33:15,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:33:15,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-13 22:33:15,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:33:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-13 22:33:15,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:33:15,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:15,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684064918] [2022-07-13 22:33:15,488 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:33:15,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971129657] [2022-07-13 22:33:15,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971129657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:33:15,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:33:15,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-13 22:33:15,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90726221] [2022-07-13 22:33:15,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:33:15,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 22:33:15,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:15,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 22:33:15,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:33:15,489 INFO L87 Difference]: Start difference. First operand 236 states and 323 transitions. Second operand has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-13 22:33:15,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:15,699 INFO L93 Difference]: Finished difference Result 380 states and 524 transitions. [2022-07-13 22:33:15,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 22:33:15,699 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 150 [2022-07-13 22:33:15,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:15,701 INFO L225 Difference]: With dead ends: 380 [2022-07-13 22:33:15,701 INFO L226 Difference]: Without dead ends: 241 [2022-07-13 22:33:15,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:33:15,702 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 12 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:15,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2481 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:33:15,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-07-13 22:33:15,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 236. [2022-07-13 22:33:15,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 148 states have (on average 1.1756756756756757) internal successors, (174), 154 states have internal predecessors, (174), 62 states have call successors, (62), 24 states have call predecessors, (62), 25 states have return successors, (85), 57 states have call predecessors, (85), 58 states have call successors, (85) [2022-07-13 22:33:15,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 321 transitions. [2022-07-13 22:33:15,713 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 321 transitions. Word has length 150 [2022-07-13 22:33:15,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:15,714 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 321 transitions. [2022-07-13 22:33:15,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-13 22:33:15,714 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 321 transitions. [2022-07-13 22:33:15,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-13 22:33:15,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:15,715 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 22:33:15,747 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 22:33:15,935 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 22:33:15,935 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:15,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:15,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1850338375, now seen corresponding path program 1 times [2022-07-13 22:33:15,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:15,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557915092] [2022-07-13 22:33:15,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:15,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:15,998 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:33:15,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477375377] [2022-07-13 22:33:15,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:15,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:15,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:33:16,000 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 22:33:16,001 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 22:33:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 115 conjunts are in the unsatisfiable core [2022-07-13 22:33:16,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:33:16,674 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_841 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_841))) (exists ((v_ArrVal_842 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_842))))) is different from true [2022-07-13 22:33:16,937 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:33:16,938 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 22:33:16,951 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:33:16,952 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 22:33:17,195 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 141 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 22:33:17,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:33:18,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:18,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557915092] [2022-07-13 22:33:18,010 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:33:18,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477375377] [2022-07-13 22:33:18,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477375377] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:33:18,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:33:18,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-07-13 22:33:18,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902926232] [2022-07-13 22:33:18,010 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:33:18,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-13 22:33:18,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:18,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-13 22:33:18,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1114, Unknown=33, NotChecked=68, Total=1332 [2022-07-13 22:33:18,012 INFO L87 Difference]: Start difference. First operand 236 states and 321 transitions. Second operand has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 22 states have internal predecessors, (77), 9 states have call successors, (22), 6 states have call predecessors, (22), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) [2022-07-13 22:33:19,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:19,312 INFO L93 Difference]: Finished difference Result 454 states and 630 transitions. [2022-07-13 22:33:19,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 22:33:19,313 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 22 states have internal predecessors, (77), 9 states have call successors, (22), 6 states have call predecessors, (22), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) Word has length 144 [2022-07-13 22:33:19,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:19,314 INFO L225 Difference]: With dead ends: 454 [2022-07-13 22:33:19,315 INFO L226 Difference]: Without dead ends: 304 [2022-07-13 22:33:19,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 177 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=262, Invalid=2243, Unknown=49, NotChecked=98, Total=2652 [2022-07-13 22:33:19,316 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 162 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 879 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:19,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 1266 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1124 Invalid, 0 Unknown, 879 Unchecked, 0.8s Time] [2022-07-13 22:33:19,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-07-13 22:33:19,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 269. [2022-07-13 22:33:19,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 170 states have (on average 1.1529411764705881) internal successors, (196), 177 states have internal predecessors, (196), 68 states have call successors, (68), 30 states have call predecessors, (68), 30 states have return successors, (102), 61 states have call predecessors, (102), 64 states have call successors, (102) [2022-07-13 22:33:19,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 366 transitions. [2022-07-13 22:33:19,333 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 366 transitions. Word has length 144 [2022-07-13 22:33:19,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:19,334 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 366 transitions. [2022-07-13 22:33:19,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 22 states have internal predecessors, (77), 9 states have call successors, (22), 6 states have call predecessors, (22), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) [2022-07-13 22:33:19,335 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 366 transitions. [2022-07-13 22:33:19,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-13 22:33:19,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:19,336 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 22:33:19,362 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 22:33:19,557 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 22:33:19,557 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:19,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:19,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1694541256, now seen corresponding path program 1 times [2022-07-13 22:33:19,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:19,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383335329] [2022-07-13 22:33:19,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:19,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:19,607 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:33:19,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831900250] [2022-07-13 22:33:19,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:19,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:19,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:33:19,609 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 22:33:19,610 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 22:33:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:20,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 2739 conjuncts, 91 conjunts are in the unsatisfiable core [2022-07-13 22:33:20,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:33:20,034 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 22:33:20,163 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 22:33:20,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-07-13 22:33:24,286 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-13 22:33:24,287 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 45 treesize of output 32 [2022-07-13 22:33:24,340 INFO L356 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-07-13 22:33:24,340 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2022-07-13 22:33:24,491 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1021 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1021))) is different from true [2022-07-13 22:33:32,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:33:32,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-07-13 22:33:32,851 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 89 proven. 4 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-13 22:33:32,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:33:33,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:33,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383335329] [2022-07-13 22:33:33,067 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:33:33,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831900250] [2022-07-13 22:33:33,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831900250] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:33:33,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:33:33,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-07-13 22:33:33,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037072370] [2022-07-13 22:33:33,068 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:33:33,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 22:33:33,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:33,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 22:33:33,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=386, Unknown=19, NotChecked=40, Total=506 [2022-07-13 22:33:33,069 INFO L87 Difference]: Start difference. First operand 269 states and 366 transitions. Second operand has 22 states, 20 states have (on average 3.3) internal successors, (66), 18 states have internal predecessors, (66), 8 states have call successors, (21), 7 states have call predecessors, (21), 8 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2022-07-13 22:33:37,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:37,741 INFO L93 Difference]: Finished difference Result 447 states and 615 transitions. [2022-07-13 22:33:37,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:33:37,741 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.3) internal successors, (66), 18 states have internal predecessors, (66), 8 states have call successors, (21), 7 states have call predecessors, (21), 8 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 150 [2022-07-13 22:33:37,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:37,743 INFO L225 Difference]: With dead ends: 447 [2022-07-13 22:33:37,743 INFO L226 Difference]: Without dead ends: 274 [2022-07-13 22:33:37,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 220 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=91, Invalid=638, Unknown=31, NotChecked=52, Total=812 [2022-07-13 22:33:37,744 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 165 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1661 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:37,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 1198 Invalid, 2433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 597 Invalid, 0 Unknown, 1661 Unchecked, 0.5s Time] [2022-07-13 22:33:37,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-07-13 22:33:37,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 273. [2022-07-13 22:33:37,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 172 states have (on average 1.1511627906976745) internal successors, (198), 180 states have internal predecessors, (198), 69 states have call successors, (69), 30 states have call predecessors, (69), 31 states have return successors, (106), 62 states have call predecessors, (106), 65 states have call successors, (106) [2022-07-13 22:33:37,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 373 transitions. [2022-07-13 22:33:37,760 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 373 transitions. Word has length 150 [2022-07-13 22:33:37,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:37,760 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 373 transitions. [2022-07-13 22:33:37,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.3) internal successors, (66), 18 states have internal predecessors, (66), 8 states have call successors, (21), 7 states have call predecessors, (21), 8 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2022-07-13 22:33:37,760 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 373 transitions. [2022-07-13 22:33:37,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-13 22:33:37,762 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:37,762 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, 1, 1, 1, 1, 1] [2022-07-13 22:33:37,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 22:33:37,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 22:33:37,980 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:37,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:37,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1480663417, now seen corresponding path program 1 times [2022-07-13 22:33:37,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:37,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093889325] [2022-07-13 22:33:37,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:37,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:38,031 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:33:38,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188801114] [2022-07-13 22:33:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:38,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:38,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:33:38,033 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:33:38,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 22:33:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:38,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 2752 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-13 22:33:38,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:33:38,496 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 22:33:38,599 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-13 22:33:38,599 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 22:33:40,685 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1186 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1186)) |c_#memory_$Pointer$.base|)) is different from true [2022-07-13 22:33:59,027 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 22:33:59,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:33:59,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:59,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093889325] [2022-07-13 22:33:59,028 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:33:59,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188801114] [2022-07-13 22:33:59,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188801114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:33:59,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:33:59,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:33:59,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959788877] [2022-07-13 22:33:59,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:33:59,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:33:59,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:59,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:33:59,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=255, Unknown=7, NotChecked=32, Total=342 [2022-07-13 22:33:59,030 INFO L87 Difference]: Start difference. First operand 273 states and 373 transitions. Second operand has 19 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 16 states have internal predecessors, (66), 8 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2022-07-13 22:33:59,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:59,790 INFO L93 Difference]: Finished difference Result 494 states and 685 transitions. [2022-07-13 22:33:59,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:33:59,790 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 16 states have internal predecessors, (66), 8 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) Word has length 155 [2022-07-13 22:33:59,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:59,792 INFO L225 Difference]: With dead ends: 494 [2022-07-13 22:33:59,792 INFO L226 Difference]: Without dead ends: 321 [2022-07-13 22:33:59,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 134 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=66, Invalid=393, Unknown=7, NotChecked=40, Total=506 [2022-07-13 22:33:59,794 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 123 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1005 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:59,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1142 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 993 Invalid, 0 Unknown, 1005 Unchecked, 0.6s Time] [2022-07-13 22:33:59,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-07-13 22:33:59,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 272. [2022-07-13 22:33:59,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 172 states have (on average 1.1511627906976745) internal successors, (198), 179 states have internal predecessors, (198), 68 states have call successors, (68), 31 states have call predecessors, (68), 31 states have return successors, (101), 61 states have call predecessors, (101), 64 states have call successors, (101) [2022-07-13 22:33:59,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 367 transitions. [2022-07-13 22:33:59,815 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 367 transitions. Word has length 155 [2022-07-13 22:33:59,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:59,817 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 367 transitions. [2022-07-13 22:33:59,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 16 states have internal predecessors, (66), 8 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2022-07-13 22:33:59,817 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 367 transitions. [2022-07-13 22:33:59,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-13 22:33:59,818 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:59,818 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:33:59,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 22:34:00,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-13 22:34:00,031 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:34:00,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:34:00,032 INFO L85 PathProgramCache]: Analyzing trace with hash -545923538, now seen corresponding path program 1 times [2022-07-13 22:34:00,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:34:00,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761952206] [2022-07-13 22:34:00,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:34:00,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:34:00,076 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:34:00,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [343448276] [2022-07-13 22:34:00,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:34:00,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:34:00,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:34:00,078 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:34:00,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 22:34:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:00,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 2744 conjuncts, 96 conjunts are in the unsatisfiable core [2022-07-13 22:34:00,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:34:02,880 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1342 Int) (v_ArrVal_1345 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1345))) (= |c_#memory_$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_1342))))) is different from true [2022-07-13 22:34:29,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:34:29,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:34:29,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-07-13 22:34:29,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:34:29,506 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:34:29,508 INFO L356 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-07-13 22:34:29,508 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2022-07-13 22:34:29,510 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 133 proven. 3 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-13 22:34:29,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:34:31,748 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1358 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_68| Int) (v_ArrVal_1359 Int)) (let ((.cse0 (+ 32 |c_aws_array_list_pop_front_n_~list#1.offset|))) (or (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_68| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_68|) 0 v_ArrVal_1359)) |c_aws_array_list_pop_front_n_~list#1.base|) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_68| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_68|) 0 v_ArrVal_1358)) |c_aws_array_list_pop_front_n_~list#1.base|) .cse0) 0))))) is different from false [2022-07-13 22:34:31,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:34:31,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761952206] [2022-07-13 22:34:31,750 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:34:31,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343448276] [2022-07-13 22:34:31,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343448276] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:34:31,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:34:31,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-07-13 22:34:31,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133872772] [2022-07-13 22:34:31,751 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:34:31,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-13 22:34:31,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:34:31,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-13 22:34:31,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=287, Unknown=11, NotChecked=70, Total=420 [2022-07-13 22:34:31,752 INFO L87 Difference]: Start difference. First operand 272 states and 367 transitions. Second operand has 20 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 8 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) [2022-07-13 22:34:57,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:34:57,169 INFO L93 Difference]: Finished difference Result 483 states and 686 transitions. [2022-07-13 22:34:57,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:34:57,170 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 8 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) Word has length 152 [2022-07-13 22:34:57,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:34:57,171 INFO L225 Difference]: With dead ends: 483 [2022-07-13 22:34:57,171 INFO L226 Difference]: Without dead ends: 328 [2022-07-13 22:34:57,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 197 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 55.1s TimeCoverageRelationStatistics Valid=133, Invalid=664, Unknown=23, NotChecked=110, Total=930 [2022-07-13 22:34:57,173 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 153 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 2423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1185 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 22:34:57,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1202 Invalid, 2423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1165 Invalid, 0 Unknown, 1185 Unchecked, 0.9s Time] [2022-07-13 22:34:57,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-07-13 22:34:57,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 293. [2022-07-13 22:34:57,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 187 states have (on average 1.1550802139037433) internal successors, (216), 196 states have internal predecessors, (216), 71 states have call successors, (71), 33 states have call predecessors, (71), 34 states have return successors, (128), 63 states have call predecessors, (128), 67 states have call successors, (128) [2022-07-13 22:34:57,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 415 transitions. [2022-07-13 22:34:57,187 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 415 transitions. Word has length 152 [2022-07-13 22:34:57,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:34:57,189 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 415 transitions. [2022-07-13 22:34:57,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 8 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (20), 7 states have call predecessors, (20), 8 states have call successors, (20) [2022-07-13 22:34:57,189 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 415 transitions. [2022-07-13 22:34:57,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-13 22:34:57,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:34:57,191 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:34:57,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 22:34:57,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-13 22:34:57,407 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:34:57,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:34:57,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1715649712, now seen corresponding path program 1 times [2022-07-13 22:34:57,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:34:57,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364831306] [2022-07-13 22:34:57,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:34:57,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:34:57,450 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:34:57,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505211469] [2022-07-13 22:34:57,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:34:57,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:34:57,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:34:57,452 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:34:57,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 22:34:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:57,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 2739 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:34:57,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:34:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-13 22:34:57,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:34:57,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:34:57,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364831306] [2022-07-13 22:34:57,925 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:34:57,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505211469] [2022-07-13 22:34:57,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505211469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:34:57,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:34:57,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:34:57,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83385621] [2022-07-13 22:34:57,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:34:57,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:34:57,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:34:57,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:34:57,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:34:57,928 INFO L87 Difference]: Start difference. First operand 293 states and 415 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 22:34:58,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:34:58,142 INFO L93 Difference]: Finished difference Result 460 states and 690 transitions. [2022-07-13 22:34:58,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:34:58,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 152 [2022-07-13 22:34:58,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:34:58,144 INFO L225 Difference]: With dead ends: 460 [2022-07-13 22:34:58,144 INFO L226 Difference]: Without dead ends: 293 [2022-07-13 22:34:58,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:34:58,146 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 7 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:34:58,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 762 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:34:58,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-07-13 22:34:58,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2022-07-13 22:34:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 187 states have (on average 1.1443850267379678) internal successors, (214), 196 states have internal predecessors, (214), 71 states have call successors, (71), 33 states have call predecessors, (71), 34 states have return successors, (128), 63 states have call predecessors, (128), 67 states have call successors, (128) [2022-07-13 22:34:58,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 413 transitions. [2022-07-13 22:34:58,160 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 413 transitions. Word has length 152 [2022-07-13 22:34:58,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:34:58,160 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 413 transitions. [2022-07-13 22:34:58,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 22:34:58,160 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 413 transitions. [2022-07-13 22:34:58,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-13 22:34:58,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:34:58,162 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:34:58,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 22:34:58,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 22:34:58,385 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:34:58,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:34:58,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1172066910, now seen corresponding path program 1 times [2022-07-13 22:34:58,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:34:58,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554692486] [2022-07-13 22:34:58,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:34:58,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:34:58,458 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:34:58,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [308427547] [2022-07-13 22:34:58,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:34:58,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:34:58,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:34:58,463 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:34:58,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 22:34:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:58,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-13 22:34:58,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:34:58,958 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 22:34:59,057 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-13 22:34:59,057 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 22:34:59,231 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 22:34:59,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:34:59,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:34:59,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554692486] [2022-07-13 22:34:59,231 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:34:59,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308427547] [2022-07-13 22:34:59,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308427547] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:34:59,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:34:59,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-13 22:34:59,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582933723] [2022-07-13 22:34:59,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:34:59,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 22:34:59,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:34:59,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 22:34:59,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:34:59,233 INFO L87 Difference]: Start difference. First operand 293 states and 413 transitions. Second operand has 15 states, 14 states have (on average 4.785714285714286) internal successors, (67), 13 states have internal predecessors, (67), 8 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2022-07-13 22:35:00,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:35:00,322 INFO L93 Difference]: Finished difference Result 487 states and 693 transitions. [2022-07-13 22:35:00,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:35:00,322 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.785714285714286) internal successors, (67), 13 states have internal predecessors, (67), 8 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) Word has length 156 [2022-07-13 22:35:00,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:35:00,324 INFO L225 Difference]: With dead ends: 487 [2022-07-13 22:35:00,324 INFO L226 Difference]: Without dead ends: 304 [2022-07-13 22:35:00,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2022-07-13 22:35:00,326 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 107 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 133 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 22:35:00,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 1183 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1308 Invalid, 0 Unknown, 133 Unchecked, 0.9s Time] [2022-07-13 22:35:00,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-07-13 22:35:00,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 293. [2022-07-13 22:35:00,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 187 states have (on average 1.1443850267379678) internal successors, (214), 196 states have internal predecessors, (214), 71 states have call successors, (71), 33 states have call predecessors, (71), 34 states have return successors, (127), 63 states have call predecessors, (127), 67 states have call successors, (127) [2022-07-13 22:35:00,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 412 transitions. [2022-07-13 22:35:00,339 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 412 transitions. Word has length 156 [2022-07-13 22:35:00,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:35:00,340 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 412 transitions. [2022-07-13 22:35:00,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.785714285714286) internal successors, (67), 13 states have internal predecessors, (67), 8 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2022-07-13 22:35:00,340 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 412 transitions. [2022-07-13 22:35:00,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-13 22:35:00,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:35:00,341 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:35:00,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 22:35:00,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-13 22:35:00,563 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:35:00,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:35:00,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1208870319, now seen corresponding path program 3 times [2022-07-13 22:35:00,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:35:00,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181422772] [2022-07-13 22:35:00,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:35:00,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:35:00,618 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:35:00,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254822191] [2022-07-13 22:35:00,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 22:35:00,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:35:00,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:35:00,620 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:35:00,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 22:35:01,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-13 22:35:01,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:35:01,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 2128 conjuncts, 161 conjunts are in the unsatisfiable core [2022-07-13 22:35:01,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:35:01,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:35:01,610 INFO L356 Elim1Store]: treesize reduction 64, result has 42.3 percent of original size [2022-07-13 22:35:01,611 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 59