./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_hash_iter_begin_harness-1.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 b875da017a84450a4103e052cdea13d2bfe14ebd5ef6946815ef19c566574bb1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:22:28,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:22:28,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:22:28,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:22:28,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:22:28,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:22:28,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:22:28,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:22:28,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:22:28,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:22:28,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:22:28,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:22:28,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:22:28,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:22:28,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:22:28,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:22:28,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:22:28,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:22:28,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:22:28,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:22:28,177 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:22:28,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:22:28,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:22:28,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:22:28,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:22:28,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:22:28,188 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:22:28,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:22:28,189 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:22:28,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:22:28,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:22:28,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:22:28,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:22:28,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:22:28,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:22:28,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:22:28,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:22:28,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:22:28,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:22:28,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:22:28,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:22:28,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:22:28,201 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:22:28,214 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:22:28,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:22:28,218 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:22:28,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:22:28,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:22:28,220 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:22:28,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:22:28,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:22:28,220 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:22:28,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:22:28,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:22:28,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:22:28,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:22:28,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:22:28,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:22:28,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:22:28,222 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:22:28,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:22:28,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:22:28,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:22:28,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:22:28,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:22:28,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:22:28,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:22:28,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:22:28,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:22:28,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:22:28,225 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:22:28,225 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:22:28,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:22:28,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b875da017a84450a4103e052cdea13d2bfe14ebd5ef6946815ef19c566574bb1 [2022-07-22 22:22:28,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:22:28,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:22:28,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:22:28,452 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:22:28,452 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:22:28,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i [2022-07-22 22:22:28,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33b46e8fd/ff7d4648a75b45d3ad9aaab2abfe1914/FLAG02e313461 [2022-07-22 22:22:29,134 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:22:29,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i [2022-07-22 22:22:29,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33b46e8fd/ff7d4648a75b45d3ad9aaab2abfe1914/FLAG02e313461 [2022-07-22 22:22:29,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33b46e8fd/ff7d4648a75b45d3ad9aaab2abfe1914 [2022-07-22 22:22:29,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:22:29,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:22:29,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:22:29,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:22:29,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:22:29,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:22:29" (1/1) ... [2022-07-22 22:22:29,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65fd7b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:29, skipping insertion in model container [2022-07-22 22:22:29,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:22:29" (1/1) ... [2022-07-22 22:22:29,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:22:29,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:22:29,603 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_hash_iter_begin_harness-1.i[4493,4506] [2022-07-22 22:22:29,610 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_hash_iter_begin_harness-1.i[4553,4566] [2022-07-22 22:22:30,169 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,169 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,169 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,170 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,170 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,178 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,179 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,182 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,183 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,184 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,184 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,185 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,185 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,416 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:22:30,418 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:22:30,420 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:22:30,424 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:22:30,425 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:22:30,425 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:22:30,426 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:22:30,426 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:22:30,427 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:22:30,428 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:22:30,552 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:22:30,814 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,815 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,837 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,839 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,844 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,845 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,860 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,861 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,863 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,863 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,863 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,864 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,864 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:22:30,926 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:22:30,945 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_hash_iter_begin_harness-1.i[4493,4506] [2022-07-22 22:22:30,946 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_hash_iter_begin_harness-1.i[4553,4566] [2022-07-22 22:22:30,980 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,981 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,981 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,981 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,981 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,986 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,987 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,989 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,989 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,990 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,990 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,990 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:30,991 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:31,011 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:22:31,011 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:22:31,012 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:22:31,012 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:22:31,013 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:22:31,013 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:22:31,013 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:22:31,014 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:22:31,014 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:22:31,014 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:22:31,032 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:22:31,155 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:31,155 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:31,159 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:31,159 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:31,161 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:31,161 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:31,181 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:31,182 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:31,182 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:31,183 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:31,183 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:31,184 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:31,184 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:31,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:22:31,365 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:22:31,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:31 WrapperNode [2022-07-22 22:22:31,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:22:31,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:22:31,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:22:31,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:22:31,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:31" (1/1) ... [2022-07-22 22:22:31,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:31" (1/1) ... [2022-07-22 22:22:31,506 INFO L137 Inliner]: procedures = 774, calls = 2446, calls flagged for inlining = 67, calls inlined = 11, statements flattened = 624 [2022-07-22 22:22:31,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:22:31,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:22:31,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:22:31,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:22:31,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:31" (1/1) ... [2022-07-22 22:22:31,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:31" (1/1) ... [2022-07-22 22:22:31,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:31" (1/1) ... [2022-07-22 22:22:31,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:31" (1/1) ... [2022-07-22 22:22:31,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:31" (1/1) ... [2022-07-22 22:22:31,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:31" (1/1) ... [2022-07-22 22:22:31,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:31" (1/1) ... [2022-07-22 22:22:31,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:22:31,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:22:31,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:22:31,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:22:31,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:31" (1/1) ... [2022-07-22 22:22:31,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:22:31,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:22:31,629 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) [2022-07-22 22:22:31,646 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 [2022-07-22 22:22:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-22 22:22:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:22:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-22 22:22:31,660 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-22 22:22:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 22:22:31,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 22:22:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-07-22 22:22:31,661 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-07-22 22:22:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:22:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:22:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:22:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:22:31,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:22:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-22 22:22:31,662 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-22 22:22:31,663 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-22 22:22:31,663 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-22 22:22:31,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-22 22:22:31,663 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-22 22:22:31,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:22:31,663 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-22 22:22:31,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-22 22:22:31,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:22:31,664 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-22 22:22:31,664 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-22 22:22:31,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:22:31,665 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-07-22 22:22:31,665 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-07-22 22:22:31,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:22:31,665 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_begin [2022-07-22 22:22:31,665 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_begin [2022-07-22 22:22:31,665 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-07-22 22:22:31,666 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-07-22 22:22:31,666 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2022-07-22 22:22:31,666 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2022-07-22 22:22:31,666 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 22:22:31,666 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 22:22:31,666 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2022-07-22 22:22:31,667 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2022-07-22 22:22:31,667 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-07-22 22:22:31,667 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-07-22 22:22:31,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:22:31,668 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-22 22:22:31,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-22 22:22:31,670 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-22 22:22:31,670 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-22 22:22:31,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:22:32,000 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:22:32,002 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:22:32,122 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2022-07-22 22:22:32,671 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:22:32,676 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:22:32,691 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-22 22:22:32,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:22:32 BoogieIcfgContainer [2022-07-22 22:22:32,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:22:32,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:22:32,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:22:32,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:22:32,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:22:29" (1/3) ... [2022-07-22 22:22:32,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52766d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:22:32, skipping insertion in model container [2022-07-22 22:22:32,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:31" (2/3) ... [2022-07-22 22:22:32,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52766d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:22:32, skipping insertion in model container [2022-07-22 22:22:32,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:22:32" (3/3) ... [2022-07-22 22:22:32,699 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_begin_harness-1.i [2022-07-22 22:22:32,709 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:22:32,709 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:22:32,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:22:32,774 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@2ad8e9c3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2edd9529 [2022-07-22 22:22:32,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:22:32,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 114 states have (on average 1.2456140350877194) internal successors, (142), 113 states have internal predecessors, (142), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-07-22 22:22:32,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-22 22:22:32,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:32,796 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:22:32,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:32,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:32,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1612502020, now seen corresponding path program 1 times [2022-07-22 22:22:32,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:32,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484441833] [2022-07-22 22:22:32,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:32,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:33,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:33,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:33,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:22:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:33,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:22:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:33,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:22:33,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:33,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484441833] [2022-07-22 22:22:33,342 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-22 22:22:33,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694246820] [2022-07-22 22:22:33,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:33,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:33,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:22:33,344 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) [2022-07-22 22:22:33,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:22:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:33,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 2556 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 22:22:33,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:22:33,802 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-07-22 22:22:33,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:22:33,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694246820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:22:33,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:22:33,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 22:22:33,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840580933] [2022-07-22 22:22:33,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:33,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 22:22:33,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:33,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 22:22:33,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:22:33,831 INFO L87 Difference]: Start difference. First operand has 171 states, 114 states have (on average 1.2456140350877194) internal successors, (142), 113 states have internal predecessors, (142), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 22:22:33,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:33,888 INFO L93 Difference]: Finished difference Result 333 states and 453 transitions. [2022-07-22 22:22:33,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 22:22:33,889 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 148 [2022-07-22 22:22:33,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:33,902 INFO L225 Difference]: With dead ends: 333 [2022-07-22 22:22:33,903 INFO L226 Difference]: Without dead ends: 164 [2022-07-22 22:22:33,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:22:33,915 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:22:33,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:22:33,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-07-22 22:22:33,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-07-22 22:22:33,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 107 states have internal predecessors, (130), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-22 22:22:33,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 209 transitions. [2022-07-22 22:22:33,970 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 209 transitions. Word has length 148 [2022-07-22 22:22:33,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:33,970 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 209 transitions. [2022-07-22 22:22:33,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 22:22:33,971 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 209 transitions. [2022-07-22 22:22:33,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-22 22:22:33,981 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:33,981 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:22:34,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 22:22:34,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-22 22:22:34,186 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:34,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:34,187 INFO L85 PathProgramCache]: Analyzing trace with hash 818348810, now seen corresponding path program 1 times [2022-07-22 22:22:34,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:34,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340953885] [2022-07-22 22:22:34,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:34,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:34,279 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:22:34,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1861786357] [2022-07-22 22:22:34,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:34,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:34,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:22:34,281 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) [2022-07-22 22:22:34,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:22:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:34,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 2584 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 22:22:34,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:22:34,947 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-22 22:22:34,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:22:35,168 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-22 22:22:35,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:35,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340953885] [2022-07-22 22:22:35,169 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:22:35,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861786357] [2022-07-22 22:22:35,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861786357] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 22:22:35,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:22:35,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2022-07-22 22:22:35,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861011452] [2022-07-22 22:22:35,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:35,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:22:35,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:35,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:22:35,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:22:35,175 INFO L87 Difference]: Start difference. First operand 164 states and 209 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-22 22:22:35,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:35,395 INFO L93 Difference]: Finished difference Result 230 states and 298 transitions. [2022-07-22 22:22:35,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:22:35,397 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 154 [2022-07-22 22:22:35,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:35,400 INFO L225 Difference]: With dead ends: 230 [2022-07-22 22:22:35,400 INFO L226 Difference]: Without dead ends: 166 [2022-07-22 22:22:35,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:22:35,401 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 212 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:22:35,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 810 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:22:35,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-07-22 22:22:35,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-07-22 22:22:35,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 107 states have (on average 1.2242990654205608) internal successors, (131), 109 states have internal predecessors, (131), 40 states have call successors, (40), 17 states have call predecessors, (40), 18 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-07-22 22:22:35,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 211 transitions. [2022-07-22 22:22:35,412 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 211 transitions. Word has length 154 [2022-07-22 22:22:35,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:35,413 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 211 transitions. [2022-07-22 22:22:35,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-22 22:22:35,413 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 211 transitions. [2022-07-22 22:22:35,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-22 22:22:35,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:35,414 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:22:35,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:22:35,635 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,SelfDestructingSolverStorable1 [2022-07-22 22:22:35,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:35,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:35,636 INFO L85 PathProgramCache]: Analyzing trace with hash -226987588, now seen corresponding path program 1 times [2022-07-22 22:22:35,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:35,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150876252] [2022-07-22 22:22:35,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:35,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:35,685 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:22:35,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487165802] [2022-07-22 22:22:35,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:35,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:35,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:22:35,687 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) [2022-07-22 22:22:35,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:22:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 2589 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 22:22:36,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:22:36,176 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-07-22 22:22:36,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:22:36,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:36,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150876252] [2022-07-22 22:22:36,176 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:22:36,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487165802] [2022-07-22 22:22:36,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487165802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:22:36,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:22:36,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:22:36,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008820840] [2022-07-22 22:22:36,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:36,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:22:36,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:36,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:22:36,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:22:36,178 INFO L87 Difference]: Start difference. First operand 166 states and 211 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-22 22:22:36,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:36,201 INFO L93 Difference]: Finished difference Result 325 states and 414 transitions. [2022-07-22 22:22:36,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:22:36,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 155 [2022-07-22 22:22:36,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:36,203 INFO L225 Difference]: With dead ends: 325 [2022-07-22 22:22:36,203 INFO L226 Difference]: Without dead ends: 171 [2022-07-22 22:22:36,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:22:36,205 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 2 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:22:36,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 819 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:22:36,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-22 22:22:36,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-07-22 22:22:36,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 111 states have (on average 1.2162162162162162) internal successors, (135), 113 states have internal predecessors, (135), 40 states have call successors, (40), 17 states have call predecessors, (40), 19 states have return successors, (41), 40 states have call predecessors, (41), 39 states have call successors, (41) [2022-07-22 22:22:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 216 transitions. [2022-07-22 22:22:36,217 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 216 transitions. Word has length 155 [2022-07-22 22:22:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:36,218 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 216 transitions. [2022-07-22 22:22:36,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-22 22:22:36,218 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 216 transitions. [2022-07-22 22:22:36,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 22:22:36,220 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:36,220 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:22:36,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:22:36,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:36,432 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:36,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1170775228, now seen corresponding path program 1 times [2022-07-22 22:22:36,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:36,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930489377] [2022-07-22 22:22:36,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:36,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:22:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:22:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:22:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:22:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:22:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:22:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:22:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:22:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:22:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:22:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 22:22:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 22:22:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-22 22:22:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:37,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 22:22:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:37,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-22 22:22:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:37,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 22:22:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:37,020 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-22 22:22:37,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:37,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930489377] [2022-07-22 22:22:37,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930489377] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:22:37,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672267012] [2022-07-22 22:22:37,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:37,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:37,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:22:37,068 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) [2022-07-22 22:22:37,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:22:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:37,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 2597 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-22 22:22:37,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:22:37,596 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 11 treesize of output 7 [2022-07-22 22:22:37,827 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-22 22:22:37,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:22:37,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672267012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:22:37,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:22:37,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2022-07-22 22:22:37,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397775545] [2022-07-22 22:22:37,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:37,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 22:22:37,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:37,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 22:22:37,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2022-07-22 22:22:37,830 INFO L87 Difference]: Start difference. First operand 171 states and 216 transitions. Second operand has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-22 22:22:37,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:37,943 INFO L93 Difference]: Finished difference Result 330 states and 416 transitions. [2022-07-22 22:22:37,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 22:22:37,944 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 167 [2022-07-22 22:22:37,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:37,945 INFO L225 Difference]: With dead ends: 330 [2022-07-22 22:22:37,945 INFO L226 Difference]: Without dead ends: 180 [2022-07-22 22:22:37,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-07-22 22:22:37,947 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 12 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:22:37,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1678 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 128 Unchecked, 0.1s Time] [2022-07-22 22:22:37,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-07-22 22:22:37,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2022-07-22 22:22:37,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 119 states have (on average 1.218487394957983) internal successors, (145), 121 states have internal predecessors, (145), 40 states have call successors, (40), 18 states have call predecessors, (40), 20 states have return successors, (42), 40 states have call predecessors, (42), 39 states have call successors, (42) [2022-07-22 22:22:37,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 227 transitions. [2022-07-22 22:22:37,965 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 227 transitions. Word has length 167 [2022-07-22 22:22:37,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:37,966 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 227 transitions. [2022-07-22 22:22:37,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-22 22:22:37,966 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 227 transitions. [2022-07-22 22:22:37,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 22:22:37,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:37,969 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:22:38,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 22:22:38,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:38,172 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:38,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:38,172 INFO L85 PathProgramCache]: Analyzing trace with hash -695933446, now seen corresponding path program 1 times [2022-07-22 22:22:38,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:38,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187923571] [2022-07-22 22:22:38,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:38,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:22:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:22:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:22:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:22:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:22:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:22:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:22:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:22:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:22:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:22:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 22:22:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 22:22:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-22 22:22:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 22:22:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-22 22:22:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 22:22:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-22 22:22:38,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:38,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187923571] [2022-07-22 22:22:38,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187923571] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:22:38,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157966888] [2022-07-22 22:22:38,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:38,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:38,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:22:38,520 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) [2022-07-22 22:22:38,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:22:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 22:22:38,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:22:39,027 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-22 22:22:39,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:22:39,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157966888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:22:39,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:22:39,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-07-22 22:22:39,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100954631] [2022-07-22 22:22:39,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:39,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:22:39,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:39,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:22:39,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:22:39,030 INFO L87 Difference]: Start difference. First operand 180 states and 227 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-22 22:22:39,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:39,139 INFO L93 Difference]: Finished difference Result 334 states and 425 transitions. [2022-07-22 22:22:39,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:22:39,140 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 167 [2022-07-22 22:22:39,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:39,141 INFO L225 Difference]: With dead ends: 334 [2022-07-22 22:22:39,141 INFO L226 Difference]: Without dead ends: 182 [2022-07-22 22:22:39,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:22:39,143 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 217 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:22:39,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 515 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:22:39,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-07-22 22:22:39,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-07-22 22:22:39,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 120 states have (on average 1.2083333333333333) internal successors, (145), 122 states have internal predecessors, (145), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2022-07-22 22:22:39,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 231 transitions. [2022-07-22 22:22:39,152 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 231 transitions. Word has length 167 [2022-07-22 22:22:39,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:39,152 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 231 transitions. [2022-07-22 22:22:39,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-22 22:22:39,153 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 231 transitions. [2022-07-22 22:22:39,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-22 22:22:39,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:39,154 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:22:39,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 22:22:39,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:39,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:39,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:39,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1022744148, now seen corresponding path program 1 times [2022-07-22 22:22:39,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:39,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671724426] [2022-07-22 22:22:39,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:39,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:22:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:22:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:22:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:22:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:22:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:22:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:22:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:22:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:22:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 22:22:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 22:22:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 22:22:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 22:22:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-22 22:22:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 22:22:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 22:22:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-22 22:22:39,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:39,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671724426] [2022-07-22 22:22:39,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671724426] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:22:39,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668104726] [2022-07-22 22:22:39,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:39,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:39,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:22:39,733 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) [2022-07-22 22:22:39,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:22:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 2621 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-22 22:22:40,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:22:41,006 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2022-07-22 22:22:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-07-22 22:22:46,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:22:46,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668104726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:22:46,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:22:46,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-07-22 22:22:46,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085577921] [2022-07-22 22:22:46,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:46,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:22:46,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:46,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:22:46,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=202, Unknown=3, NotChecked=28, Total=272 [2022-07-22 22:22:46,947 INFO L87 Difference]: Start difference. First operand 182 states and 231 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-22 22:22:47,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:47,118 INFO L93 Difference]: Finished difference Result 341 states and 443 transitions. [2022-07-22 22:22:47,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:22:47,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 173 [2022-07-22 22:22:47,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:47,120 INFO L225 Difference]: With dead ends: 341 [2022-07-22 22:22:47,120 INFO L226 Difference]: Without dead ends: 185 [2022-07-22 22:22:47,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=54, Invalid=253, Unknown=3, NotChecked=32, Total=342 [2022-07-22 22:22:47,121 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 5 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 313 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:22:47,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1107 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 313 Unchecked, 0.1s Time] [2022-07-22 22:22:47,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-07-22 22:22:47,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2022-07-22 22:22:47,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 122 states have (on average 1.2049180327868851) internal successors, (147), 123 states have internal predecessors, (147), 41 states have call successors, (41), 19 states have call predecessors, (41), 20 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2022-07-22 22:22:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 233 transitions. [2022-07-22 22:22:47,148 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 233 transitions. Word has length 173 [2022-07-22 22:22:47,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:47,148 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 233 transitions. [2022-07-22 22:22:47,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-22 22:22:47,149 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 233 transitions. [2022-07-22 22:22:47,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-22 22:22:47,150 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:47,150 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:22:47,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 22:22:47,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:47,371 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:47,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:47,371 INFO L85 PathProgramCache]: Analyzing trace with hash -183837512, now seen corresponding path program 1 times [2022-07-22 22:22:47,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:47,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124198983] [2022-07-22 22:22:47,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:47,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:22:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:22:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:22:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:22:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:22:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:22:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:22:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:22:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:22:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 22:22:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 22:22:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 22:22:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 22:22:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-22 22:22:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 22:22:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-22 22:22:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-07-22 22:22:47,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:47,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124198983] [2022-07-22 22:22:47,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124198983] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:22:47,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044359265] [2022-07-22 22:22:47,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:47,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:47,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:22:47,890 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) [2022-07-22 22:22:47,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 22:22:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:48,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 2651 conjuncts, 41 conjunts are in the unsatisfiable core [2022-07-22 22:22:48,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:22:48,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:48,450 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 16 treesize of output 17 [2022-07-22 22:22:48,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:48,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:48,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:48,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:48,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:48,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:48,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:48,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:48,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:48,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:48,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-07-22 22:22:48,928 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-22 22:22:48,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:22:48,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044359265] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:22:48,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:22:48,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [17] total 30 [2022-07-22 22:22:48,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221371900] [2022-07-22 22:22:48,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:48,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 22:22:48,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:48,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 22:22:48,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-07-22 22:22:48,931 INFO L87 Difference]: Start difference. First operand 184 states and 233 transitions. Second operand has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 8 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2022-07-22 22:22:49,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:49,296 INFO L93 Difference]: Finished difference Result 346 states and 435 transitions. [2022-07-22 22:22:49,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 22:22:49,297 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 8 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 178 [2022-07-22 22:22:49,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:49,298 INFO L225 Difference]: With dead ends: 346 [2022-07-22 22:22:49,298 INFO L226 Difference]: Without dead ends: 267 [2022-07-22 22:22:49,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 211 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=1280, Unknown=0, NotChecked=0, Total=1406 [2022-07-22 22:22:49,299 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 214 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:22:49,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1053 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 190 Invalid, 0 Unknown, 98 Unchecked, 0.2s Time] [2022-07-22 22:22:49,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-07-22 22:22:49,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 258. [2022-07-22 22:22:49,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 181 states have (on average 1.2375690607734806) internal successors, (224), 181 states have internal predecessors, (224), 47 states have call successors, (47), 30 states have call predecessors, (47), 29 states have return successors, (51), 46 states have call predecessors, (51), 46 states have call successors, (51) [2022-07-22 22:22:49,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 322 transitions. [2022-07-22 22:22:49,310 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 322 transitions. Word has length 178 [2022-07-22 22:22:49,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:49,310 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 322 transitions. [2022-07-22 22:22:49,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 8 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2022-07-22 22:22:49,311 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 322 transitions. [2022-07-22 22:22:49,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-22 22:22:49,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:49,312 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:22:49,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-22 22:22:49,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:49,527 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:49,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:49,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1017170911, now seen corresponding path program 1 times [2022-07-22 22:22:49,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:49,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342993008] [2022-07-22 22:22:49,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:49,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:22:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:22:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:22:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:22:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:22:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:22:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:22:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:22:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:22:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 22:22:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 22:22:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 22:22:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-22 22:22:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:22:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-22 22:22:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:49,993 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-07-22 22:22:49,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:49,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342993008] [2022-07-22 22:22:49,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342993008] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:22:49,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003580017] [2022-07-22 22:22:49,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:49,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:49,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:22:49,995 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) [2022-07-22 22:22:49,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 22:22:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:50,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 22:22:50,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:22:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-22 22:22:50,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:22:50,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003580017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:22:50,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:22:50,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 22 [2022-07-22 22:22:50,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863351840] [2022-07-22 22:22:50,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:50,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:22:50,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:50,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:22:50,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2022-07-22 22:22:50,551 INFO L87 Difference]: Start difference. First operand 258 states and 322 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-22 22:22:50,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:50,638 INFO L93 Difference]: Finished difference Result 438 states and 552 transitions. [2022-07-22 22:22:50,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:22:50,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 182 [2022-07-22 22:22:50,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:50,640 INFO L225 Difference]: With dead ends: 438 [2022-07-22 22:22:50,640 INFO L226 Difference]: Without dead ends: 267 [2022-07-22 22:22:50,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-07-22 22:22:50,641 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 2 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:22:50,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1155 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:22:50,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-07-22 22:22:50,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2022-07-22 22:22:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 187 states have (on average 1.2299465240641712) internal successors, (230), 190 states have internal predecessors, (230), 47 states have call successors, (47), 30 states have call predecessors, (47), 32 states have return successors, (55), 46 states have call predecessors, (55), 46 states have call successors, (55) [2022-07-22 22:22:50,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 332 transitions. [2022-07-22 22:22:50,652 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 332 transitions. Word has length 182 [2022-07-22 22:22:50,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:50,652 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 332 transitions. [2022-07-22 22:22:50,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-22 22:22:50,653 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 332 transitions. [2022-07-22 22:22:50,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-22 22:22:50,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:50,655 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:22:50,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 22:22:50,875 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,SelfDestructingSolverStorable7 [2022-07-22 22:22:50,876 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:50,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:50,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1394290473, now seen corresponding path program 2 times [2022-07-22 22:22:50,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:50,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245823086] [2022-07-22 22:22:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:50,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:22:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:22:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:22:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:22:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:22:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:22:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:22:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:22:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:22:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 22:22:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 22:22:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-22 22:22:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 22:22:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:22:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-22 22:22:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:51,526 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-07-22 22:22:51,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:51,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245823086] [2022-07-22 22:22:51,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245823086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:22:51,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:22:51,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:22:51,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052827966] [2022-07-22 22:22:51,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:51,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:22:51,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:51,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:22:51,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:22:51,530 INFO L87 Difference]: Start difference. First operand 267 states and 332 transitions. Second operand has 20 states, 17 states have (on average 4.588235294117647) internal successors, (78), 14 states have internal predecessors, (78), 9 states have call successors, (27), 7 states have call predecessors, (27), 4 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2022-07-22 22:22:53,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:53,690 INFO L93 Difference]: Finished difference Result 400 states and 511 transitions. [2022-07-22 22:22:53,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 22:22:53,690 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 4.588235294117647) internal successors, (78), 14 states have internal predecessors, (78), 9 states have call successors, (27), 7 states have call predecessors, (27), 4 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) Word has length 193 [2022-07-22 22:22:53,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:53,692 INFO L225 Difference]: With dead ends: 400 [2022-07-22 22:22:53,692 INFO L226 Difference]: Without dead ends: 324 [2022-07-22 22:22:53,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=224, Invalid=1258, Unknown=0, NotChecked=0, Total=1482 [2022-07-22 22:22:53,693 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 341 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 22:22:53,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1044 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 22:22:53,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-07-22 22:22:53,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 297. [2022-07-22 22:22:53,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 206 states have (on average 1.2281553398058251) internal successors, (253), 212 states have internal predecessors, (253), 53 states have call successors, (53), 30 states have call predecessors, (53), 37 states have return successors, (69), 54 states have call predecessors, (69), 52 states have call successors, (69) [2022-07-22 22:22:53,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 375 transitions. [2022-07-22 22:22:53,710 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 375 transitions. Word has length 193 [2022-07-22 22:22:53,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:53,712 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 375 transitions. [2022-07-22 22:22:53,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 4.588235294117647) internal successors, (78), 14 states have internal predecessors, (78), 9 states have call successors, (27), 7 states have call predecessors, (27), 4 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2022-07-22 22:22:53,713 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 375 transitions. [2022-07-22 22:22:53,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-22 22:22:53,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:53,715 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:22:53,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 22:22:53,715 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:53,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:53,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1903763563, now seen corresponding path program 1 times [2022-07-22 22:22:53,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:53,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457413237] [2022-07-22 22:22:53,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:53,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:53,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:53,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:53,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:22:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:53,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:22:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:53,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:22:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:53,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:22:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:22:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:22:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:22:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:22:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:22:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 22:22:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 22:22:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-22 22:22:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 22:22:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:22:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-22 22:22:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,530 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-07-22 22:22:54,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:54,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457413237] [2022-07-22 22:22:54,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457413237] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:22:54,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136711522] [2022-07-22 22:22:54,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:54,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:54,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:22:54,532 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) [2022-07-22 22:22:54,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 22:22:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 22:22:55,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:22:55,130 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-07-22 22:22:55,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:22:55,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136711522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:22:55,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:22:55,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [20] total 25 [2022-07-22 22:22:55,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59677] [2022-07-22 22:22:55,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:55,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:22:55,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:55,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:22:55,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2022-07-22 22:22:55,132 INFO L87 Difference]: Start difference. First operand 297 states and 375 transitions. Second operand has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-22 22:22:55,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:55,214 INFO L93 Difference]: Finished difference Result 432 states and 548 transitions. [2022-07-22 22:22:55,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:22:55,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 193 [2022-07-22 22:22:55,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:55,216 INFO L225 Difference]: With dead ends: 432 [2022-07-22 22:22:55,216 INFO L226 Difference]: Without dead ends: 270 [2022-07-22 22:22:55,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-22 22:22:55,217 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 2 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:22:55,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1156 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:22:55,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-07-22 22:22:55,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 268. [2022-07-22 22:22:55,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 185 states have (on average 1.2216216216216216) internal successors, (226), 189 states have internal predecessors, (226), 49 states have call successors, (49), 28 states have call predecessors, (49), 33 states have return successors, (61), 50 states have call predecessors, (61), 48 states have call successors, (61) [2022-07-22 22:22:55,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 336 transitions. [2022-07-22 22:22:55,228 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 336 transitions. Word has length 193 [2022-07-22 22:22:55,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:55,228 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 336 transitions. [2022-07-22 22:22:55,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-22 22:22:55,229 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 336 transitions. [2022-07-22 22:22:55,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-22 22:22:55,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:55,230 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:22:55,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 22:22:55,443 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 [2022-07-22 22:22:55,443 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:55,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:55,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1026335268, now seen corresponding path program 1 times [2022-07-22 22:22:55,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:55,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464912638] [2022-07-22 22:22:55,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:55,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:22:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:22:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:22:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:22:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:22:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:22:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:22:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:22:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:22:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 22:22:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 22:22:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-22 22:22:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 22:22:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 22:22:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-22 22:22:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-22 22:22:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-07-22 22:22:55,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:55,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464912638] [2022-07-22 22:22:55,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464912638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:22:55,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:22:55,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:22:55,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840862761] [2022-07-22 22:22:55,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:55,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:22:55,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:55,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:22:55,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:22:55,773 INFO L87 Difference]: Start difference. First operand 268 states and 336 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 22:22:56,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:56,371 INFO L93 Difference]: Finished difference Result 446 states and 567 transitions. [2022-07-22 22:22:56,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 22:22:56,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 195 [2022-07-22 22:22:56,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:56,372 INFO L225 Difference]: With dead ends: 446 [2022-07-22 22:22:56,373 INFO L226 Difference]: Without dead ends: 259 [2022-07-22 22:22:56,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:22:56,374 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 128 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:22:56,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 462 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 22:22:56,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-07-22 22:22:56,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 238. [2022-07-22 22:22:56,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 165 states have (on average 1.206060606060606) internal successors, (199), 168 states have internal predecessors, (199), 43 states have call successors, (43), 26 states have call predecessors, (43), 29 states have return successors, (48), 43 states have call predecessors, (48), 42 states have call successors, (48) [2022-07-22 22:22:56,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 290 transitions. [2022-07-22 22:22:56,384 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 290 transitions. Word has length 195 [2022-07-22 22:22:56,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:56,385 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 290 transitions. [2022-07-22 22:22:56,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (28), 6 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 22:22:56,385 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 290 transitions. [2022-07-22 22:22:56,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-22 22:22:56,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:56,386 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:22:56,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 22:22:56,387 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:56,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:56,387 INFO L85 PathProgramCache]: Analyzing trace with hash 450820696, now seen corresponding path program 1 times [2022-07-22 22:22:56,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:56,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517014449] [2022-07-22 22:22:56,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:56,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:22:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:22:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:22:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:22:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:22:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:22:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:22:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:22:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:22:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 22:22:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:57,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:57,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:57,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 22:22:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:57,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-22 22:22:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:57,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 22:22:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:57,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 22:22:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:57,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:57,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:57,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-22 22:22:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:57,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-22 22:22:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:57,165 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-07-22 22:22:57,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:57,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517014449] [2022-07-22 22:22:57,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517014449] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:22:57,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758804360] [2022-07-22 22:22:57,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:57,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:57,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:22:57,176 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) [2022-07-22 22:22:57,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 22:22:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:57,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 2759 conjuncts, 41 conjunts are in the unsatisfiable core [2022-07-22 22:22:57,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:22:57,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:57,808 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 16 treesize of output 17 [2022-07-22 22:22:58,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:58,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:58,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:58,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:58,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:58,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:58,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:58,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:58,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:58,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:58,141 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-07-22 22:22:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-22 22:22:58,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:22:58,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758804360] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:22:58,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:22:58,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [19] total 32 [2022-07-22 22:22:58,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525260323] [2022-07-22 22:22:58,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:58,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 22:22:58,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:58,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 22:22:58,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2022-07-22 22:22:58,285 INFO L87 Difference]: Start difference. First operand 238 states and 290 transitions. Second operand has 15 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 9 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2022-07-22 22:22:58,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:58,786 INFO L93 Difference]: Finished difference Result 334 states and 405 transitions. [2022-07-22 22:22:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 22:22:58,787 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 9 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 200 [2022-07-22 22:22:58,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:58,788 INFO L225 Difference]: With dead ends: 334 [2022-07-22 22:22:58,788 INFO L226 Difference]: Without dead ends: 254 [2022-07-22 22:22:58,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 240 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=1413, Unknown=0, NotChecked=0, Total=1560 [2022-07-22 22:22:58,789 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 199 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:22:58,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1878 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 361 Invalid, 0 Unknown, 198 Unchecked, 0.4s Time] [2022-07-22 22:22:58,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-07-22 22:22:58,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 249. [2022-07-22 22:22:58,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 172 states have (on average 1.191860465116279) internal successors, (205), 175 states have internal predecessors, (205), 45 states have call successors, (45), 28 states have call predecessors, (45), 31 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-07-22 22:22:58,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 299 transitions. [2022-07-22 22:22:58,799 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 299 transitions. Word has length 200 [2022-07-22 22:22:58,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:58,800 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 299 transitions. [2022-07-22 22:22:58,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 9 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2022-07-22 22:22:58,800 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 299 transitions. [2022-07-22 22:22:58,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-22 22:22:58,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:58,802 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:22:58,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 22:22:59,015 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,SelfDestructingSolverStorable11 [2022-07-22 22:22:59,015 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:59,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:59,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1734404003, now seen corresponding path program 1 times [2022-07-22 22:22:59,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:59,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438260659] [2022-07-22 22:22:59,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:59,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:22:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:22:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:22:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:22:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:22:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:22:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:22:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:22:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:22:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 22:22:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 22:22:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-22 22:22:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 22:22:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 22:22:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-22 22:22:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-22 22:22:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:22:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,030 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 24 proven. 22 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-07-22 22:23:00,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:23:00,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438260659] [2022-07-22 22:23:00,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438260659] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:23:00,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179742787] [2022-07-22 22:23:00,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:00,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:23:00,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:23:00,032 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) [2022-07-22 22:23:00,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 22:23:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 2786 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 22:23:00,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:23:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-07-22 22:23:00,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:23:00,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179742787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:23:00,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:23:00,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [30] total 34 [2022-07-22 22:23:00,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919442358] [2022-07-22 22:23:00,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:23:00,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:23:00,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:23:00,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:23:00,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1041, Unknown=0, NotChecked=0, Total=1122 [2022-07-22 22:23:00,674 INFO L87 Difference]: Start difference. First operand 249 states and 299 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-22 22:23:00,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:23:00,761 INFO L93 Difference]: Finished difference Result 488 states and 585 transitions. [2022-07-22 22:23:00,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:23:00,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 209 [2022-07-22 22:23:00,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:23:00,763 INFO L225 Difference]: With dead ends: 488 [2022-07-22 22:23:00,763 INFO L226 Difference]: Without dead ends: 251 [2022-07-22 22:23:00,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2022-07-22 22:23:00,765 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 2 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:23:00,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 947 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:23:00,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-07-22 22:23:00,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-07-22 22:23:00,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 173 states have (on average 1.1907514450867052) internal successors, (206), 177 states have internal predecessors, (206), 45 states have call successors, (45), 28 states have call predecessors, (45), 32 states have return successors, (50), 45 states have call predecessors, (50), 44 states have call successors, (50) [2022-07-22 22:23:00,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 301 transitions. [2022-07-22 22:23:00,774 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 301 transitions. Word has length 209 [2022-07-22 22:23:00,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:23:00,774 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 301 transitions. [2022-07-22 22:23:00,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-22 22:23:00,775 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 301 transitions. [2022-07-22 22:23:00,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-22 22:23:00,776 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:23:00,776 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:23:00,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 22:23:00,987 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,SelfDestructingSolverStorable12 [2022-07-22 22:23:00,987 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:23:00,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:23:00,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1271160118, now seen corresponding path program 1 times [2022-07-22 22:23:00,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:23:00,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827855683] [2022-07-22 22:23:00,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:00,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:23:01,027 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:23:01,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [273022399] [2022-07-22 22:23:01,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:01,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:23:01,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:23:01,029 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) [2022-07-22 22:23:01,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 22:23:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 22:23:01,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:23:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-22 22:23:01,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:23:01,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:23:01,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827855683] [2022-07-22 22:23:01,583 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:23:01,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273022399] [2022-07-22 22:23:01,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273022399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:23:01,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:23:01,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 22:23:01,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597903158] [2022-07-22 22:23:01,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:23:01,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:23:01,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:23:01,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:23:01,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:23:01,586 INFO L87 Difference]: Start difference. First operand 251 states and 301 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-07-22 22:23:01,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:23:01,656 INFO L93 Difference]: Finished difference Result 429 states and 516 transitions. [2022-07-22 22:23:01,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:23:01,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 215 [2022-07-22 22:23:01,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:23:01,658 INFO L225 Difference]: With dead ends: 429 [2022-07-22 22:23:01,658 INFO L226 Difference]: Without dead ends: 249 [2022-07-22 22:23:01,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:23:01,659 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 2 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:23:01,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 948 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:23:01,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-07-22 22:23:01,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 244. [2022-07-22 22:23:01,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 168 states have (on average 1.1845238095238095) internal successors, (199), 171 states have internal predecessors, (199), 45 states have call successors, (45), 28 states have call predecessors, (45), 30 states have return successors, (48), 44 states have call predecessors, (48), 44 states have call successors, (48) [2022-07-22 22:23:01,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 292 transitions. [2022-07-22 22:23:01,670 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 292 transitions. Word has length 215 [2022-07-22 22:23:01,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:23:01,671 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 292 transitions. [2022-07-22 22:23:01,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-07-22 22:23:01,672 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 292 transitions. [2022-07-22 22:23:01,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-22 22:23:01,672 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:23:01,673 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:23:01,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 22:23:01,887 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,SelfDestructingSolverStorable13 [2022-07-22 22:23:01,887 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:23:01,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:23:01,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1244691977, now seen corresponding path program 1 times [2022-07-22 22:23:01,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:23:01,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322061664] [2022-07-22 22:23:01,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:01,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:23:01,931 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:23:01,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158882740] [2022-07-22 22:23:01,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:01,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:23:01,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:23:01,933 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) [2022-07-22 22:23:01,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 22:23:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:02,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 2996 conjuncts, 91 conjunts are in the unsatisfiable core [2022-07-22 22:23:02,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:23:02,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:02,652 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 16 treesize of output 17 [2022-07-22 22:23:02,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:02,657 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 16 treesize of output 17 [2022-07-22 22:23:04,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:23:04,376 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 22:23:04,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 78 [2022-07-22 22:23:04,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,403 INFO L356 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-07-22 22:23:04,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 78 [2022-07-22 22:23:11,526 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 115 proven. 5 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-22 22:23:11,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:23:14,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:23:14,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322061664] [2022-07-22 22:23:14,198 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:23:14,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158882740] [2022-07-22 22:23:14,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158882740] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:23:14,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:23:14,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-07-22 22:23:14,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181573790] [2022-07-22 22:23:14,200 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:23:14,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-22 22:23:14,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:23:14,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-22 22:23:14,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1065, Unknown=0, NotChecked=0, Total=1190 [2022-07-22 22:23:14,202 INFO L87 Difference]: Start difference. First operand 244 states and 292 transitions. Second operand has 26 states, 22 states have (on average 4.5) internal successors, (99), 24 states have internal predecessors, (99), 12 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-07-22 22:23:19,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:23:19,268 INFO L93 Difference]: Finished difference Result 335 states and 405 transitions. [2022-07-22 22:23:19,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-22 22:23:19,269 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 4.5) internal successors, (99), 24 states have internal predecessors, (99), 12 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 221 [2022-07-22 22:23:19,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:23:19,270 INFO L225 Difference]: With dead ends: 335 [2022-07-22 22:23:19,270 INFO L226 Difference]: Without dead ends: 255 [2022-07-22 22:23:19,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 205 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=197, Invalid=1783, Unknown=0, NotChecked=0, Total=1980 [2022-07-22 22:23:19,271 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 206 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 467 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:23:19,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 2200 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 422 Invalid, 0 Unknown, 467 Unchecked, 0.5s Time] [2022-07-22 22:23:19,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-22 22:23:19,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 248. [2022-07-22 22:23:19,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 171 states have (on average 1.1812865497076024) internal successors, (202), 174 states have internal predecessors, (202), 45 states have call successors, (45), 28 states have call predecessors, (45), 31 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-07-22 22:23:19,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 296 transitions. [2022-07-22 22:23:19,280 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 296 transitions. Word has length 221 [2022-07-22 22:23:19,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:23:19,281 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 296 transitions. [2022-07-22 22:23:19,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 4.5) internal successors, (99), 24 states have internal predecessors, (99), 12 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-07-22 22:23:19,281 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 296 transitions. [2022-07-22 22:23:19,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-22 22:23:19,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:23:19,282 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:23:19,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 22:23:19,495 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,SelfDestructingSolverStorable14 [2022-07-22 22:23:19,495 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:23:19,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:23:19,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1831497991, now seen corresponding path program 1 times [2022-07-22 22:23:19,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:23:19,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003513795] [2022-07-22 22:23:19,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:19,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:23:19,536 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:23:19,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [830886085] [2022-07-22 22:23:19,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:19,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:23:19,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:23:19,538 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) [2022-07-22 22:23:19,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 22:23:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:20,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 2991 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-22 22:23:20,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:23:20,970 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$.offset| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0))) (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0)))) is different from true [2022-07-22 22:23:25,883 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2022-07-22 22:23:25,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:23:25,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:23:25,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003513795] [2022-07-22 22:23:25,883 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:23:25,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830886085] [2022-07-22 22:23:25,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830886085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:23:25,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:23:25,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 22:23:25,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418046307] [2022-07-22 22:23:25,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:23:25,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:23:25,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:23:25,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:23:25,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2022-07-22 22:23:25,885 INFO L87 Difference]: Start difference. First operand 248 states and 296 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-22 22:23:25,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:23:25,982 INFO L93 Difference]: Finished difference Result 348 states and 426 transitions. [2022-07-22 22:23:25,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:23:25,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 221 [2022-07-22 22:23:25,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:23:25,983 INFO L225 Difference]: With dead ends: 348 [2022-07-22 22:23:25,983 INFO L226 Difference]: Without dead ends: 243 [2022-07-22 22:23:25,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2022-07-22 22:23:25,984 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 0 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:23:25,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 913 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 303 Unchecked, 0.1s Time] [2022-07-22 22:23:25,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-07-22 22:23:25,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2022-07-22 22:23:25,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 165 states have (on average 1.1757575757575758) internal successors, (194), 167 states have internal predecessors, (194), 45 states have call successors, (45), 28 states have call predecessors, (45), 30 states have return successors, (48), 45 states have call predecessors, (48), 44 states have call successors, (48) [2022-07-22 22:23:25,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 287 transitions. [2022-07-22 22:23:25,993 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 287 transitions. Word has length 221 [2022-07-22 22:23:25,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:23:25,993 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 287 transitions. [2022-07-22 22:23:25,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-22 22:23:25,994 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 287 transitions. [2022-07-22 22:23:25,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-07-22 22:23:25,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:23:25,995 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:23:26,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-22 22:23:26,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:23:26,219 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:23:26,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:23:26,219 INFO L85 PathProgramCache]: Analyzing trace with hash -359144008, now seen corresponding path program 1 times [2022-07-22 22:23:26,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:23:26,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416691029] [2022-07-22 22:23:26,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:26,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:23:26,263 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:23:26,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1100535853] [2022-07-22 22:23:26,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:26,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:23:26,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:23:26,265 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:23:26,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 22:23:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:26,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 95 conjunts are in the unsatisfiable core [2022-07-22 22:23:26,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:23:26,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:26,991 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 16 treesize of output 17 [2022-07-22 22:23:26,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:26,996 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 16 treesize of output 17 [2022-07-22 22:23:28,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:28,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:28,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:28,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:28,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:28,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:28,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:28,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:28,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:28,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:28,130 INFO L356 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-07-22 22:23:28,131 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 78 [2022-07-22 22:23:28,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:28,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:28,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:28,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:28,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:28,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:28,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:28,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:28,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:28,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:28,143 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 22:23:28,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 78 [2022-07-22 22:23:34,192 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 115 proven. 5 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-22 22:23:34,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:23:34,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:23:34,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416691029] [2022-07-22 22:23:34,906 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:23:34,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100535853] [2022-07-22 22:23:34,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100535853] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:23:34,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:23:34,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-07-22 22:23:34,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958813580] [2022-07-22 22:23:34,907 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:23:34,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 22:23:34,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:23:34,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 22:23:34,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1131, Unknown=0, NotChecked=0, Total=1260 [2022-07-22 22:23:34,908 INFO L87 Difference]: Start difference. First operand 241 states and 287 transitions. Second operand has 27 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 24 states have internal predecessors, (100), 12 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-07-22 22:23:37,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:23:37,741 INFO L93 Difference]: Finished difference Result 329 states and 401 transitions. [2022-07-22 22:23:37,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-22 22:23:37,742 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 24 states have internal predecessors, (100), 12 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 222 [2022-07-22 22:23:37,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:23:37,747 INFO L225 Difference]: With dead ends: 329 [2022-07-22 22:23:37,748 INFO L226 Difference]: Without dead ends: 250 [2022-07-22 22:23:37,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 207 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=197, Invalid=1873, Unknown=0, NotChecked=0, Total=2070 [2022-07-22 22:23:37,749 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 212 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 401 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:23:37,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 2132 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 314 Invalid, 0 Unknown, 401 Unchecked, 0.3s Time] [2022-07-22 22:23:37,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-07-22 22:23:37,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 246. [2022-07-22 22:23:37,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 170 states have (on average 1.1705882352941177) internal successors, (199), 172 states have internal predecessors, (199), 45 states have call successors, (45), 28 states have call predecessors, (45), 30 states have return successors, (48), 45 states have call predecessors, (48), 44 states have call successors, (48) [2022-07-22 22:23:37,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 292 transitions. [2022-07-22 22:23:37,762 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 292 transitions. Word has length 222 [2022-07-22 22:23:37,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:23:37,762 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 292 transitions. [2022-07-22 22:23:37,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 24 states have internal predecessors, (100), 12 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-07-22 22:23:37,763 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 292 transitions. [2022-07-22 22:23:37,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-22 22:23:37,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:23:37,764 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:23:37,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-22 22:23:37,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-22 22:23:37,976 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:23:37,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:23:37,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1437112506, now seen corresponding path program 1 times [2022-07-22 22:23:37,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:23:37,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601829862] [2022-07-22 22:23:37,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:37,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:23:38,036 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:23:38,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1189563229] [2022-07-22 22:23:38,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:38,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:23:38,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:23:38,038 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:23:38,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 22:23:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:38,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 93 conjunts are in the unsatisfiable core [2022-07-22 22:23:38,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:23:38,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:38,762 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 16 treesize of output 17 [2022-07-22 22:23:38,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:38,766 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 16 treesize of output 17 [2022-07-22 22:23:45,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:45,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:45,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:45,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:45,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:45,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:45,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:45,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:45,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:45,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:45,340 INFO L356 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-07-22 22:23:45,340 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 78 [2022-07-22 22:23:45,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:45,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:45,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:45,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:45,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:45,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:45,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:45,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:45,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:45,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:45,351 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 22:23:45,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 78 [2022-07-22 22:23:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-22 22:23:52,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:23:53,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:23:53,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601829862] [2022-07-22 22:23:53,130 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:23:53,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189563229] [2022-07-22 22:23:53,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189563229] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:23:53,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:23:53,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-07-22 22:23:53,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947884889] [2022-07-22 22:23:53,130 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:23:53,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-22 22:23:53,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:23:53,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-22 22:23:53,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1211, Unknown=2, NotChecked=0, Total=1332 [2022-07-22 22:23:53,131 INFO L87 Difference]: Start difference. First operand 246 states and 292 transitions. Second operand has 28 states, 23 states have (on average 4.217391304347826) internal successors, (97), 24 states have internal predecessors, (97), 13 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) [2022-07-22 22:24:01,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:24:01,907 INFO L93 Difference]: Finished difference Result 400 states and 487 transitions. [2022-07-22 22:24:01,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-22 22:24:01,907 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 4.217391304347826) internal successors, (97), 24 states have internal predecessors, (97), 13 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) Word has length 225 [2022-07-22 22:24:01,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:24:01,909 INFO L225 Difference]: With dead ends: 400 [2022-07-22 22:24:01,909 INFO L226 Difference]: Without dead ends: 333 [2022-07-22 22:24:01,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=383, Invalid=4170, Unknown=3, NotChecked=0, Total=4556 [2022-07-22 22:24:01,910 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 277 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 2030 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 619 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:24:01,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1385 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2030 Invalid, 0 Unknown, 619 Unchecked, 1.3s Time] [2022-07-22 22:24:01,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-22 22:24:01,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 300. [2022-07-22 22:24:01,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 212 states have (on average 1.1981132075471699) internal successors, (254), 214 states have internal predecessors, (254), 50 states have call successors, (50), 35 states have call predecessors, (50), 37 states have return successors, (55), 50 states have call predecessors, (55), 49 states have call successors, (55) [2022-07-22 22:24:01,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 359 transitions. [2022-07-22 22:24:01,930 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 359 transitions. Word has length 225 [2022-07-22 22:24:01,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:24:01,930 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 359 transitions. [2022-07-22 22:24:01,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 4.217391304347826) internal successors, (97), 24 states have internal predecessors, (97), 13 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) [2022-07-22 22:24:01,931 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 359 transitions. [2022-07-22 22:24:01,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-22 22:24:01,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:24:01,932 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:24:01,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-22 22:24:02,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-22 22:24:02,151 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:24:02,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:24:02,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1338459295, now seen corresponding path program 1 times [2022-07-22 22:24:02,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:24:02,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234362532] [2022-07-22 22:24:02,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:02,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:24:02,191 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:24:02,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427271779] [2022-07-22 22:24:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:02,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:02,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:24:02,193 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:24:02,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-22 22:24:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:02,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 3019 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 22:24:02,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:24:02,780 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-07-22 22:24:02,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:24:02,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:24:02,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234362532] [2022-07-22 22:24:02,780 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:24:02,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427271779] [2022-07-22 22:24:02,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427271779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:24:02,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:24:02,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:24:02,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116648936] [2022-07-22 22:24:02,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:24:02,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:24:02,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:24:02,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:24:02,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:24:02,782 INFO L87 Difference]: Start difference. First operand 300 states and 359 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-22 22:24:02,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:24:02,805 INFO L93 Difference]: Finished difference Result 417 states and 509 transitions. [2022-07-22 22:24:02,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:24:02,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 1 states have call successors, (27) Word has length 226 [2022-07-22 22:24:02,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:24:02,807 INFO L225 Difference]: With dead ends: 417 [2022-07-22 22:24:02,807 INFO L226 Difference]: Without dead ends: 289 [2022-07-22 22:24:02,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:24:02,808 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:24:02,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 813 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:24:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-07-22 22:24:02,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-07-22 22:24:02,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 203 states have (on average 1.1970443349753694) internal successors, (243), 203 states have internal predecessors, (243), 50 states have call successors, (50), 35 states have call predecessors, (50), 35 states have return successors, (53), 50 states have call predecessors, (53), 49 states have call successors, (53) [2022-07-22 22:24:02,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 346 transitions. [2022-07-22 22:24:02,821 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 346 transitions. Word has length 226 [2022-07-22 22:24:02,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:24:02,821 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 346 transitions. [2022-07-22 22:24:02,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-22 22:24:02,821 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 346 transitions. [2022-07-22 22:24:02,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-22 22:24:02,822 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:24:02,823 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:24:02,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-22 22:24:03,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:03,035 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:24:03,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:24:03,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1656342513, now seen corresponding path program 1 times [2022-07-22 22:24:03,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:24:03,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149429811] [2022-07-22 22:24:03,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:03,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:24:03,074 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:24:03,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153022180] [2022-07-22 22:24:03,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:03,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:03,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:24:03,076 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:24:03,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-22 22:24:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:04,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 3050 conjuncts, 349 conjunts are in the unsatisfiable core [2022-07-22 22:24:04,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:24:04,119 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 [2022-07-22 22:24:04,298 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-22 22:24:04,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-22 22:24:04,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 22:24:04,599 INFO L356 Elim1Store]: treesize reduction 184, result has 21.7 percent of original size [2022-07-22 22:24:04,599 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 93 treesize of output 123 [2022-07-22 22:24:04,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 22:24:04,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:04,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:04,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2022-07-22 22:24:04,992 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-22 22:24:04,997 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 11 treesize of output 7 [2022-07-22 22:24:05,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:05,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:05,007 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-07-22 22:24:05,010 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 [2022-07-22 22:24:05,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 22:24:06,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:06,537 INFO L356 Elim1Store]: treesize reduction 126, result has 25.9 percent of original size [2022-07-22 22:24:06,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-07-22 22:24:06,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 32 [2022-07-22 22:24:06,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 5 [2022-07-22 22:24:06,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:06,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-22 22:24:06,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-22 22:24:06,785 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:24:06,862 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4250 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4250) |c_#memory_int|)) (exists ((v_ArrVal_4251 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4251) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4249 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4249) |c_#memory_$Pointer$.base|))) is different from true [2022-07-22 22:24:06,975 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:24:07,028 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4253 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4253) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4252 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4252) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_4254 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4254) |c_#memory_int|))) is different from true [2022-07-22 22:24:07,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:07,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:07,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2022-07-22 22:24:07,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:07,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:07,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2022-07-22 22:24:07,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:07,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:07,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2022-07-22 22:24:07,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:07,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:07,237 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-07-22 22:24:07,237 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2022-07-22 22:24:08,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:08,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:08,709 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 45 treesize of output 41 [2022-07-22 22:24:08,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:08,725 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-22 22:24:08,725 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 1 case distinctions, treesize of input 78 treesize of output 73 [2022-07-22 22:24:08,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:08,738 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-07-22 22:24:08,738 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 1 case distinctions, treesize of input 71 treesize of output 58 [2022-07-22 22:24:08,743 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 24 treesize of output 23 [2022-07-22 22:24:29,583 INFO L356 Elim1Store]: treesize reduction 12, result has 90.7 percent of original size [2022-07-22 22:24:29,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 330 treesize of output 350 [2022-07-22 22:25:05,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:05,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:25:05,725 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:25:05,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 84 [2022-07-22 22:25:05,906 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 97 proven. 180 refuted. 0 times theorem prover too weak. 8 trivial. 6 not checked. [2022-07-22 22:25:05,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:25:06,470 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4259 (Array Int Int))) (< 0 (mod (select (select (store |c_#memory_int| |c_aws_hash_iter_begin_~#iter~1.base| v_ArrVal_4259) c_aws_hash_iter_begin_~state~11.base) (+ 40 c_aws_hash_iter_begin_~state~11.offset)) 18446744073709551616))) is different from false [2022-07-22 22:25:06,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:25:06,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149429811] [2022-07-22 22:25:06,498 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:25:06,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153022180] [2022-07-22 22:25:06,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153022180] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:25:06,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:25:06,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2022-07-22 22:25:06,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325355963] [2022-07-22 22:25:06,498 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:25:06,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-07-22 22:25:06,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:25:06,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-07-22 22:25:06,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=3428, Unknown=26, NotChecked=360, Total=4032 [2022-07-22 22:25:06,500 INFO L87 Difference]: Start difference. First operand 289 states and 346 transitions. Second operand has 59 states, 50 states have (on average 3.02) internal successors, (151), 49 states have internal predecessors, (151), 26 states have call successors, (39), 13 states have call predecessors, (39), 19 states have return successors, (36), 25 states have call predecessors, (36), 25 states have call successors, (36) [2022-07-22 22:25:22,504 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4250 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4250) |c_#memory_int|)) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_159| Int) (v_ArrVal_4232 Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_159|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_159| v_ArrVal_4232)))) (exists ((v_ArrVal_4251 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4251) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4249 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4249) |c_#memory_$Pointer$.base|))) is different from true [2022-07-22 22:26:11,380 WARN L233 SmtUtils]: Spent 6.91s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:26:12,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:26:12,213 INFO L93 Difference]: Finished difference Result 590 states and 701 transitions. [2022-07-22 22:26:12,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-07-22 22:26:12,214 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 50 states have (on average 3.02) internal successors, (151), 49 states have internal predecessors, (151), 26 states have call successors, (39), 13 states have call predecessors, (39), 19 states have return successors, (36), 25 states have call predecessors, (36), 25 states have call successors, (36) Word has length 232 [2022-07-22 22:26:12,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:26:12,216 INFO L225 Difference]: With dead ends: 590 [2022-07-22 22:26:12,216 INFO L226 Difference]: Without dead ends: 437 [2022-07-22 22:26:12,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 227 SyntacticMatches, 21 SemanticMatches, 89 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2746 ImplicationChecksByTransitivity, 118.1s TimeCoverageRelationStatistics Valid=402, Invalid=7039, Unknown=57, NotChecked=692, Total=8190 [2022-07-22 22:26:12,218 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 125 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 4482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3308 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:26:12,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1814 Invalid, 4482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1112 Invalid, 0 Unknown, 3308 Unchecked, 1.4s Time] [2022-07-22 22:26:12,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-22 22:26:12,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 430. [2022-07-22 22:26:12,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 299 states have (on average 1.1505016722408026) internal successors, (344), 300 states have internal predecessors, (344), 74 states have call successors, (74), 56 states have call predecessors, (74), 56 states have return successors, (85), 73 states have call predecessors, (85), 73 states have call successors, (85) [2022-07-22 22:26:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 503 transitions. [2022-07-22 22:26:12,237 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 503 transitions. Word has length 232 [2022-07-22 22:26:12,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:26:12,237 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 503 transitions. [2022-07-22 22:26:12,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 50 states have (on average 3.02) internal successors, (151), 49 states have internal predecessors, (151), 26 states have call successors, (39), 13 states have call predecessors, (39), 19 states have return successors, (36), 25 states have call predecessors, (36), 25 states have call successors, (36) [2022-07-22 22:26:12,238 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 503 transitions. [2022-07-22 22:26:12,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-22 22:26:12,239 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:26:12,239 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:26:12,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-22 22:26:12,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:26:12,451 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:26:12,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:26:12,452 INFO L85 PathProgramCache]: Analyzing trace with hash 86404045, now seen corresponding path program 1 times [2022-07-22 22:26:12,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:26:12,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101331415] [2022-07-22 22:26:12,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:26:12,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:26:12,502 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:26:12,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381732461] [2022-07-22 22:26:12,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:26:12,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:26:12,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:26:12,508 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:26:12,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-22 22:26:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:26:17,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 3061 conjuncts, 294 conjunts are in the unsatisfiable core [2022-07-22 22:26:17,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:26:17,304 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 [2022-07-22 22:26:17,503 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-22 22:26:17,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-22 22:26:17,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:26:17,830 INFO L356 Elim1Store]: treesize reduction 112, result has 28.7 percent of original size [2022-07-22 22:26:17,831 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 142 treesize of output 166 [2022-07-22 22:26:18,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:26:18,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:18,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-22 22:26:18,163 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 12 treesize of output 14 [2022-07-22 22:26:18,175 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-22 22:26:18,181 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 22:26:18,187 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 [2022-07-22 22:26:18,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 22:26:20,235 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-22 22:26:20,235 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 [2022-07-22 22:26:20,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 46 [2022-07-22 22:26:20,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:20,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13 [2022-07-22 22:26:20,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-07-22 22:26:20,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-22 22:26:20,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:26:20,732 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4533 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4533))) (exists ((v_ArrVal_4534 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4534))) (exists ((v_ArrVal_4532 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4532)))) is different from true [2022-07-22 22:26:20,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:26:20,960 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4535 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4535) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_4536 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4536) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4537 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4537) |c_#memory_int|))) is different from true [2022-07-22 22:26:21,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:21,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:21,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 69 [2022-07-22 22:26:21,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:21,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:21,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:21,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 56 [2022-07-22 22:26:21,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:21,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:21,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 69 [2022-07-22 22:26:21,257 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-07-22 22:26:21,258 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 [2022-07-22 22:26:23,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 56 [2022-07-22 22:26:23,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 37 [2022-07-22 22:26:23,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:23,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:23,698 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 40 treesize of output 36 [2022-07-22 22:26:23,703 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 14 treesize of output 13 [2022-07-22 22:26:39,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:39,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2022-07-22 22:26:39,417 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 99 proven. 173 refuted. 0 times theorem prover too weak. 14 trivial. 6 not checked. [2022-07-22 22:26:39,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:26:39,941 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4539 (Array Int Int))) (< 1 (mod (select (select (store |c_#memory_int| |c_aws_hash_iter_begin_~#iter~1.base| v_ArrVal_4539) c_aws_hash_iter_begin_~state~11.base) (+ 40 c_aws_hash_iter_begin_~state~11.offset)) 18446744073709551616))) is different from false [2022-07-22 22:26:39,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:26:39,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101331415] [2022-07-22 22:26:39,958 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:26:39,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381732461] [2022-07-22 22:26:39,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381732461] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:26:39,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:26:39,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2022-07-22 22:26:39,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514783803] [2022-07-22 22:26:39,959 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:26:39,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-07-22 22:26:39,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:26:39,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-07-22 22:26:39,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=3096, Unknown=20, NotChecked=342, Total=3660 [2022-07-22 22:26:39,961 INFO L87 Difference]: Start difference. First operand 430 states and 503 transitions. Second operand has 55 states, 47 states have (on average 3.2127659574468086) internal successors, (151), 46 states have internal predecessors, (151), 24 states have call successors, (39), 12 states have call predecessors, (39), 17 states have return successors, (36), 23 states have call predecessors, (36), 23 states have call successors, (36) [2022-07-22 22:26:40,411 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4533 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4533))) (exists ((v_ArrVal_4534 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4534))) (exists ((v_ArrVal_4517 Int) (|v___CPROVER_overflow_mult_~#c~1.base_164| Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_164| v_ArrVal_4517)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_164|) 0))) (exists ((v_ArrVal_4532 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4532)))) is different from true [2022-07-22 22:26:42,676 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4535 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4535) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_4536 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4536) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4537 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4537) |c_#memory_int|)) (exists ((v_ArrVal_4517 Int) (|v___CPROVER_overflow_mult_~#c~1.base_164| Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_164| v_ArrVal_4517)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_164|) 0)))) is different from true [2022-07-22 22:26:50,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:26:50,163 INFO L93 Difference]: Finished difference Result 610 states and 724 transitions. [2022-07-22 22:26:50,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-07-22 22:26:50,164 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 47 states have (on average 3.2127659574468086) internal successors, (151), 46 states have internal predecessors, (151), 24 states have call successors, (39), 12 states have call predecessors, (39), 17 states have return successors, (36), 23 states have call predecessors, (36), 23 states have call successors, (36) Word has length 235 [2022-07-22 22:26:50,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:26:50,166 INFO L225 Difference]: With dead ends: 610 [2022-07-22 22:26:50,166 INFO L226 Difference]: Without dead ends: 460 [2022-07-22 22:26:50,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 230 SyntacticMatches, 22 SemanticMatches, 88 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 2524 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=403, Invalid=6720, Unknown=37, NotChecked=850, Total=8010 [2022-07-22 22:26:50,168 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 264 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 5579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4312 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:26:50,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 2163 Invalid, 5579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1051 Invalid, 0 Unknown, 4312 Unchecked, 1.4s Time] [2022-07-22 22:26:50,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-07-22 22:26:50,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 452. [2022-07-22 22:26:50,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 315 states have (on average 1.1492063492063491) internal successors, (362), 318 states have internal predecessors, (362), 76 states have call successors, (76), 57 states have call predecessors, (76), 60 states have return successors, (91), 76 states have call predecessors, (91), 75 states have call successors, (91) [2022-07-22 22:26:50,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 529 transitions. [2022-07-22 22:26:50,190 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 529 transitions. Word has length 235 [2022-07-22 22:26:50,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:26:50,190 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 529 transitions. [2022-07-22 22:26:50,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 47 states have (on average 3.2127659574468086) internal successors, (151), 46 states have internal predecessors, (151), 24 states have call successors, (39), 12 states have call predecessors, (39), 17 states have return successors, (36), 23 states have call predecessors, (36), 23 states have call successors, (36) [2022-07-22 22:26:50,191 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 529 transitions. [2022-07-22 22:26:50,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-07-22 22:26:50,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:26:50,192 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:26:50,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-22 22:26:50,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:26:50,415 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:26:50,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:26:50,416 INFO L85 PathProgramCache]: Analyzing trace with hash 684439375, now seen corresponding path program 2 times [2022-07-22 22:26:50,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:26:50,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623173576] [2022-07-22 22:26:50,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:26:50,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:26:50,456 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:26:50,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619953738] [2022-07-22 22:26:50,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:26:50,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:26:50,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:26:50,457 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:26:50,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-22 22:26:51,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:26:51,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:26:51,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 3072 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-22 22:26:51,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:26:51,903 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-22 22:26:51,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:26:51,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:26:51,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623173576] [2022-07-22 22:26:51,903 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:26:51,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619953738] [2022-07-22 22:26:51,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619953738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:26:51,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:26:51,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 22:26:51,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844435504] [2022-07-22 22:26:51,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:26:51,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:26:51,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:26:51,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:26:51,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:26:51,904 INFO L87 Difference]: Start difference. First operand 452 states and 529 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-22 22:26:51,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:26:51,947 INFO L93 Difference]: Finished difference Result 652 states and 771 transitions. [2022-07-22 22:26:51,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 22:26:51,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 238 [2022-07-22 22:26:51,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:26:51,950 INFO L225 Difference]: With dead ends: 652 [2022-07-22 22:26:51,950 INFO L226 Difference]: Without dead ends: 407 [2022-07-22 22:26:51,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:26:51,952 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 2 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:26:51,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 607 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:26:51,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-07-22 22:26:51,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 405. [2022-07-22 22:26:51,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 282 states have (on average 1.1560283687943262) internal successors, (326), 284 states have internal predecessors, (326), 69 states have call successors, (69), 51 states have call predecessors, (69), 53 states have return successors, (80), 69 states have call predecessors, (80), 68 states have call successors, (80) [2022-07-22 22:26:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 475 transitions. [2022-07-22 22:26:51,977 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 475 transitions. Word has length 238 [2022-07-22 22:26:51,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:26:51,978 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 475 transitions. [2022-07-22 22:26:51,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-22 22:26:51,978 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 475 transitions. [2022-07-22 22:26:51,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-22 22:26:51,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:26:51,980 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:26:52,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-22 22:26:52,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-22 22:26:52,185 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:26:52,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:26:52,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1832870452, now seen corresponding path program 1 times [2022-07-22 22:26:52,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:26:52,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356168937] [2022-07-22 22:26:52,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:26:52,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:26:52,242 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:26:52,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150155048] [2022-07-22 22:26:52,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:26:52,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:26:52,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:26:52,244 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:26:52,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process